Texas Assessments of Academic Readiness (STAAR) 8th Grade Science Activities
Printable Eighth Grade Science Worksheets, Study Guides and Vocabulary Sets.
Our Solar SystemThe Sun is by far the most massive object in the Solar System, therefore gravitationally dominating all other members of the Solar System. The Sun is a star that gives off radiant energy that drives Earth systems and is essential for life. The Solar System consists of comets, asteroids, planets, and their respective satellites, most of which orbit the Sun on a plane called the ecliptic. The planets in our Solar System revolve in the same direction around the Sun in elliptical orbits that are very close to being in the same plane. Read more...iWorksheets: 3 Stars, Galaxies and the UniverseStars do not just exist randomly throughout the universe. They are clustered in large groups. Large groups of stars in space are called galaxies. Our galaxy is called The Milky Way. Astronomers estimate that there are from 200 billion to 400 billion stars in the Milky Way. Read more...iWorksheets: 3Study Guides: 1Vocabulary Sets: 3 The Movement of Ocean WaterThe crest of a wave is the highest point of the wave. The lowest point of a wave is the trough. The distance between two adjacent crests is the wavelength. The wave height or wave amplitude is the distance from the crest to the trough. The wave frequency is the number of waves that pass a given point each second. Read more...iWorksheets: 3Study Guides: 1Vocabulary Sets: 2 EarthquakesAn earthquake is the result of a release of stored energy in the Earth's crust that creates seismic waves. Seismographs are machines that detect and measure seismic waves caused by earthquakes. P waves, or primary seismic waves, are the fastest moving waves. They travel through solids, liquids and gases. S waves or secondary waves are slower and can travel through solids, but not liquids. The slowest and most destructive seismic waves are called surface waves. Read more...iWorksheets: 3Vocabulary Sets: 4 FossilsAncient life forms have been preserved, in part and in whole, in the rock record. These preserved pieces of ancient life forms are called fossils. Fossils found in limestone are usually formed by a process called cast and mold. Petrified wood is formed by a process called petrification. In very hot, arid environments, flesh can be dried out and preserved indefinitely. This process is called mummification. Read more...iWorksheets: 5Study Guides: 1Vocabulary Sets: 2 Geologic timeAge of the Earth is 4.6 billion years. Geologic time scale is a map that divides Earth history into logical segments of time. The geologic time scale is broken into divisions and subdivisions. The divisions are called eons. Eons are divided into eras, eras are divided into periods, and periods are divided into epochs. Read more...iWorksheets: 5Study Guides: 1 MineralsA mineral, by definition, must meet four criteria. It must: be a naturally occurring substance, be a solid substance, have an internal crystal structure and have been formed by inorganic processes (in other words, it cannot be formed by an organism). A rock, by comparison, is composed of one or more minerals or organic material (such as coal). Read more...iWorksheets: 5Study Guides: 1Vocabulary Sets: 3 Plate tectonicsThe Earth is a dynamic planet. Its interior is actually in motion! The crust on its surface is also in motion. It was not until the 20th century that geologists truly began to understand Earth's dynamic movements. New theories, supported by ever-improving technologies, have made it possible to more clearly understand the forces working within the planet we call home. Read more...iWorksheets: 5Study Guides: 1Vocabulary Sets: 7 RocksTypes of Rocks: Metamorphic: formed when igneous or sedimentary rocks are put under heat and/or pressure in the Earth's crust. Igneous: Formed when crystallized through melting and cooling. Sedimentary: Formed through the accumulation of sediment. Compaction - process by which overlying pressure from rocks and soil reduces the size or volume of sediments. Rock cycle - the continental process by which rocks can be changed into different types. Read more...iWorksheets: 3Vocabulary Sets: 3 VolcanoesEarth's crust is fractured into 13 major and approximately 20 total lithospheric plates. Most of the Earth's volcanoes are located at lithospheric plate boundaries. The belt of volcanoes along the boundary of the Pacific Ocean is called the Ring Of Fire because it contains about 75% of the world's active volcanoes. Why does a volcano erupt? When magma rises towards the surface, gas bubbles expand and increase in pressure. The force of the gas pushes the magma out of the vent and causes an eruption. Read more...iWorksheets: 3Vocabulary Sets: 3 Understanding WeatherThe global winds in the Northern hemisphere curve to the right. The global winds in the Southern hemisphere curve to the left. One would expect them to travel in a straight line, but the Earth’s rotation on its axis causes them to curve. This is due to the Coriolis effect. Read more...iWorksheets: 5Study Guides: 1Vocabulary Sets: 3 Bones, muscles, and skinFreeThe human body works very smoothly carrying out its daily functions because it is organized. The human body has different levels of organization that consist of cells(the smallest), tissues, organs, and organ systems (the largest). Read more...iWorksheets: 3Study Guides: 1Vocabulary Sets: 7 Circulation and immunityThe circulatory system, otherwise known as the cardiovascular system, consists of the heart, blood vessels, and blood. The heart has two separate sides, the right and left, which are separated by the septum. The septum prevents oxygen-rich blood from mixing with oxygen-poor blood. The valve prevents blood from flowing backwards in the one-way direction of the circulatory system. There are three types of blood vessels in the human body: arteries, capillaries, and veins. Read more...iWorksheets: 3Study Guides: 1Vocabulary Sets: 7 Respiration and excretionAir travels through the nose, pharynx, trachea, and the bronchi within the lungs. Oxygen is gained by the respiratory system and glucose is gained from the digestive system. Both the oxygen and glucose are transported around the body by the circulatory system. With every breath, we pull oxygen out of the atmosphere. The atmosphere consists of 78% nitrogen, 21% oxygen, and 1% other gases, so the air that we breathe is not all taken into the body. Read more...iWorksheets: 3Study Guides: 1Vocabulary Sets: 4 The Digestive System & NutritionThere are six different types of nutrients that the body needs. They are carbohydrates, fats, proteins, minerals, vitamins, and water. There are three main functions of the digestive system. They are to break down foods into molecules that the body can use, absorb the molecules into the blood and send them all throughout the body, and eliminate wastes from the body. Read more...iWorksheets: 3Study Guides: 1Vocabulary Sets: 5 The Endocrine system and ReproductionThe endocrine system controls long-term and short-term changes of the body and many of the daily activities of the body. The system is made up of glands, which are organs that produce and secrete chemicals. Endocrine glands release chemicals called hormones into the bloodstream, which will then be carried throughout the body. The hypothalamus is a small part of the brain that links the nervous system and the endocrine system together. Read more...iWorksheets: 3Study Guides: 1Vocabulary Sets: 5 The nervous systemThe nervous system gathers information from inside and outside of the body, responds to the information that it gathers and helps to maintain homeostasis. There are three different types of neurons: sensory neurons, interneurons, and motor neurons. The three different types of neurons will work together to carry messages all throughout the nervous system. Read more...iWorksheets: 3Study Guides: 1Vocabulary Sets: 6 The Evolution and interaction of Living ThingsOver 3.5 billion years ago, the Earth was much different than it is today. Scientists believe that early Earth’s atmosphere was made up of nitrogen, water vapor, carbon dioxide, and methane. All of these gases are still on Earth today, but in different quantities. The gases in Earth's atmosphere include: Nitrogen - 78 percent, Oxygen - 21 percent, Argon - 0.93 percent, Carbon dioxide - 0.04 percent,
Trace amounts of neon, helium, methane, krypton and hydrogen, as well as water vapor. Read more...iWorksheets: 3Study Guides: 1Vocabulary Sets: 2 Modern GeneticsThe main function of a gene is to regulate the production of proteins within cells. Proteins establish the phenotype, physical characteristics, and many other traits of a particular organism. Recall from Topic 5 that DNA is made up of 4 different nitrogen bases, Adenine (A), Thymine (T), Guanine (G), and Cytosine (C). Read more...iWorksheets: 5Study Guides: 1Vocabulary Sets: 6 Heat and heat technologyAll matter is made up of particles that vibrate with kinetic energy. This movement of particles occurs even when the temperature goes well below zero. When we use the term temperature, we are referring to the amount of thermal energy that a substance has. Thermal energy is the sum of the energy of the moving particle and the potential energy of the resting particles. Read more...iWorksheets: 3Study Guides: 1Vocabulary Sets: 1 The energy of wavesWhen a disturbance transfers energy from one place to another, this is referred to as a wave. Most waves, except for electromagnetic waves, require a substance or medium through which they can travel. This medium could be a solid, liquid or vapor like air. Waves requiring a medium are called mechanical waves. Amplitude: the maximum distance that the medium particles move away from their resting position when a wave is passing through. Read more...iWorksheets: 3Study Guides: 1Vocabulary Sets: 2 Forces in fluidsPressure is calculated by dividing force by area and is measured in units called pascals. For an example, if a force of 10 newtons was exerted over an area of 2 square centimeters, the pressure would be 5 pascals. In fluids, which are substances that can flow, pressure is the sum of each of the forces of each particle in the fluid. Examples of fluids include liquids such as water and gases such as air and helium. Read more...iWorksheets: 3Study Guides: 1Vocabulary Sets: 2 LightWhen light hits an object, it either goes through easily, partially, or not at all. An object that lets most of the light through is said to be transparent. The colors we see depend upon which wavelengths of visible light get reflected back to our eyes. Objects appear white when they reflect all of light’s wavelengths and conversely, they look black when they reflect little or none of the wavelengths. This is why it is wise to wear light-colored clothing in the summer; your clothing doesn’t absorb the light. Read more...iWorksheets: 5Study Guides: 1Vocabulary Sets: 2 Mirrors and lensesThe reflection of light can occur in different ways. Since a mirror has a very smooth surface, all the light bouncing off of a mirror reflects in a regular manner. Read more...iWorksheets: 3Study Guides: 1Vocabulary Sets: 2 SoundSound is a type of longitudinal wave. As it travels through its medium, the mediums particles show areas of compression and rarefaction. Sound, at room temperature, normally travels at a speed of 343m/s. At different temperatures, sound travels at different speeds. The speed of sound is also influenced by the density and elasticity of the medium. When the frequency of sound changes as its source moves in relationship to someone listening, this is called the Doppler Effect. Read more...iWorksheets: 5Study Guides: 1Vocabulary Sets: 2 Chemical bondingFreeChemical bonding involves only an atom's outermost electrons. These electrons are called valence electrons and because they have more energy than other electrons, they tend to be found further away from the nucleus. Read more...iWorksheets: 3Study Guides: 1Vocabulary Sets: 1 Chemical reactionsWhen a chemical reaction occurs, the original substances put together, called reactants, lose their chemical properties and become different substances called products with a different set of chemical properties. Reactions where energy is released are called exothermic reactions. When energy is absorbed, it is called an endothermic reaction. Read more...iWorksheets: 5Study Guides: 1Vocabulary Sets: 2 Organic compoundsOrganic chemistry is the study of carbon compounds. Because there are so many of these in living things, organic chemistry is sometimes thought of as living chemistry. Read more...iWorksheets: 3Study Guides: 1Vocabulary Sets: 2 Introduction to physical scienceSafety First! Working with flames, chemicals and glassware poses many potential dangers. You should learn about safety equipment such as eye goggles, eye washes, fire blankets and fire extinguishers. In addition, while working in the lab, you should be aware of laboratory safety rules as well as familiar with the many safety symbols that often appear in the instructions that are printed for lab activity. Read more...iWorksheets: 3Study Guides: 1Vocabulary Sets: 1 Properties of atomsThe modern atomic model suggests that an atom has two particles in the nucleus, a proton and a neutron or neutrally charged particle. All the mass of an atom is made up with these particles. The total number of protons and neutrons in an atom is called atomic mass while the number of protons is called the atomic number. Read more...iWorksheets: 5Study Guides: 1Vocabulary Sets: 2 TX.STAAR.8. STAAR Grade 8 Science Assessment
Reporting Category 1: Matter and Energy - The student will demonstrate an understanding of the properties of matter and energy and their interactions.
(8.5) Matter and energy. The student knows that matter is composed of atoms and has chemical and physical properties. The student is expected to:
8.5 (C) Interpret the arrangement of the Periodic Table, including groups and periods, to explain how properties are used to classify elements. Readiness Standard (STAAR)
8.5 (D) Recognize that chemical formulas are used to identify substances and determine the number of atoms of each element in chemical formulas containing subscripts. Readiness Standard (STAAR)
8.5 (E) Investigate how evidence of chemical reactions indicate that new substances with different properties are formed. Readiness Standard (STAAR)
Chemical ReactionsChemical reaction is a process in which one or more substances, are converted to one or more different products. Synthesis - a chemical reaction where two or more elements or compounds combine to form a single product. Single Replacement Reaction - a chemical reaction where a more active element replaces a less active element in a compound. Decomposition - a chemical reaction in which a compound is broken down into simpler compounds or elements. Read more...iWorksheets :6Vocabulary :3 8.5 (F) Recognize whether a chemical equation containing coefficients is balanced or not and how that relates to the law of conservation of mass. Supporting Standard (STAAR)
Chemical ReactionsChemical reaction is a process in which one or more substances, are converted to one or more different products. Synthesis - a chemical reaction where two or more elements or compounds combine to form a single product. Single Replacement Reaction - a chemical reaction where a more active element replaces a less active element in a compound. Decomposition - a chemical reaction in which a compound is broken down into simpler compounds or elements. Read more...iWorksheets :6Vocabulary :3 (7.5) Matter and energy. The student knows that interactions occur between matter and energy. The student is expected to:
7.5 (C) Diagram the flow of energy through living systems, including food chains, food webs, and energy pyramids. Supporting Standard (STAAR)
Ecology IMatch each ecology term to its definition like Energy pyramid, Decomposer, Carnivore, Ecosystem, Owl pellet, Omnivore and many more. Which human activity would be more likely to have a positive/negative impact on the environment? Which factor determines the type of terrestrial plants that grow in an area? Which energy transfer is least likely to be found in nature? Read more...iWorksheets :4Vocabulary :2 Ecology IIMatch each Ecology term to its definition like Trophic level, Food web, Consumer, Energy, Herbivore and more. Which component is not recycled in an ecosystem? Why Vultures, which are classified as scavengers, are an important part of an ecosystem? Which characteristic does creeping vine that is parasitic on other plants shares with all other heterotrophs? Read more...iWorksheets :3Vocabulary :2 (7.6) Matter and energy. The student knows that matter has physical and chemical properties and can undergo physical and chemical changes. The student is expected to:
7.6 (A) Identify that organic compounds contain carbon and other elements such as hydrogen, oxygen, phosphorus, nitrogen, or sulfur. Supporting Standard (STAAR)
(6.5) Matter and energy. The student knows the differences between elements and compounds. The student is expected to:
6.5 (C) Differentiate between elements and compounds on the most basic level. Supporting Standard (STAAR)
(6.6) Matter and energy. The student knows matter has physical properties that can be used for classification. The student is expected to:
6.6 (A) Compare metals, nonmetals, and metalloids using physical properties such as luster, conductivity, or malleability. Supporting Standard (STAAR)
Reporting Category 2: Force, Motion, and Energy - The student will demonstrate an understanding of force, motion, and energy and their relationships.
(6.8) Force, motion, and energy. The student knows force and motion are related to potential and kinetic energy. The student is expected to:
6.8 (A) Compare and contrast potential and kinetic energy. Supporting Standard (STAAR)
Matter and EnergyMatter is any substance that has mass and takes up space. Energy can be transferred as heat or as work. Energy is a property that matter has. Read more...iWorksheets :3 Chemical ReactionsChemical reaction is a process in which one or more substances, are converted to one or more different products. Synthesis - a chemical reaction where two or more elements or compounds combine to form a single product. Single Replacement Reaction - a chemical reaction where a more active element replaces a less active element in a compound. Decomposition - a chemical reaction in which a compound is broken down into simpler compounds or elements. Read more...iWorksheets :6Vocabulary :3 (6.9) Force, motion, and energy. The student knows that the Law of Conservation of Energy states that energy can neither be created nor destroyed, it just changes form. The student is expected to:
6.9 (C) Demonstrate energy transformations such as energy in a flashlight battery changes from chemical energy to electrical energy to light energy. Supporting Standard (STAAR)
States of MatterThere are Four states of matter observable in everyday life: solid, liquid, gas, and plasma. Matter in the solid state has a fixed volume and shape, with component particles (atoms, molecules or ions) close together and fixed into place. Matter in the liquid state has a fixed volume, but has a variable shape that adapts to fit its container. Its particles are close together but move freely. Matter in the gaseous state has both variable volume and shape, adapting both to fit its container. Its particles are neither close together nor fixed in place. Matter in the plasma state has variable volume and shape. Read more...iWorksheets :3 Reporting Category 4: Organisms and Environments - The student will demonstrate an understanding of the structures and functions of living organisms and their interdependence on each other and on their environment.
(8.11) Organisms and environments. The student knows that interdependence occurs among living systems and the environment and that human activities can affect these systems. The student is expected to:
8.11 (A) Describe producer/consumer, predator/prey, and parasite/host relationships as they occur in food webs within marine, freshwater, and terrestrial ecosystems. Readiness Standard (STAAR)
Evolution and classificationCategorize organisms using a hierarchical classification system based on similarities and differences. Evolutionary theory is a scientific explanation for the unity and diversity of life. Analyze the effects of evolutionary mechanisms, including genetic drift, gene flow, mutation and recombination. Read more...iWorksheets :3 Ecology IMatch each ecology term to its definition like Energy pyramid, Decomposer, Carnivore, Ecosystem, Owl pellet, Omnivore and many more. Which human activity would be more likely to have a positive/negative impact on the environment? Which factor determines the type of terrestrial plants that grow in an area? Which energy transfer is least likely to be found in nature? Read more...iWorksheets :4Vocabulary :2 Ecology IIMatch each Ecology term to its definition like Trophic level, Food web, Consumer, Energy, Herbivore and more. Which component is not recycled in an ecosystem? Why Vultures, which are classified as scavengers, are an important part of an ecosystem? Which characteristic does creeping vine that is parasitic on other plants shares with all other heterotrophs? Read more...iWorksheets :3Vocabulary :2 8.11 (C) Explore how short- and long-term environmental changes affect organisms and traits in subsequent populations. Readiness Standard (STAAR)
Evolution and classificationCategorize organisms using a hierarchical classification system based on similarities and differences. Evolutionary theory is a scientific explanation for the unity and diversity of life. Analyze the effects of evolutionary mechanisms, including genetic drift, gene flow, mutation and recombination. Read more...iWorksheets :3 (7.10) Organisms and environments. The student knows that there is a relationship between organisms and the environment. The student is expected to:
7.10 (B) Describe how biodiversity contributes to the sustainability of an ecosystem. Supporting Standard (STAAR)
Vertebrates IIA vertebrate is an animal with a spinal cord surrounded by cartilage or bone. The vertebrates are also characterized by a muscular system consisting primarily of bilaterally paired masses and a central nervous system partly enclosed within the backbone. The 7 classes of vertebrates are: Class Aves, Class Reptilia, Class Agnatha, Class Amphibia, Class Mammalia, Class Osteichthyes, Class Chondrichthyes. Read more...iWorksheets :3Vocabulary :3 (7.11) Organisms and environments. The student knows that populations and species demonstrate variation and inherit many of their unique traits through gradual processes over many generations. The student is expected to:
7.11 (A) Examine organisms or their structures such as insects or leaves and use dichotomous keys for identification. Supporting Standard (STAAR)
Evolution and classificationCategorize organisms using a hierarchical classification system based on similarities and differences. Evolutionary theory is a scientific explanation for the unity and diversity of life. Analyze the effects of evolutionary mechanisms, including genetic drift, gene flow, mutation and recombination. Read more...iWorksheets :3 7.11 (C) Identify some changes in genetic traits that have occurred over several generations through natural selection and selective breeding such as the Galapagos Medium Ground Finch (Geospiza fortis) or domestic animals. Supporting Standard (STAAR)
Evolution and classificationCategorize organisms using a hierarchical classification system based on similarities and differences. Evolutionary theory is a scientific explanation for the unity and diversity of life. Analyze the effects of evolutionary mechanisms, including genetic drift, gene flow, mutation and recombination. Read more...iWorksheets :3 (7.12) Organisms and environments. The student knows that living systems at all levels of organization demonstrate the complementary nature of structure and function. The student is expected to:
7.12 (B) Identify the main functions of the systems of the human organism, including the circulatory, respiratory, skeletal, muscular, digestive, excretory, reproductive, integumentary, nervous, and endocrine systems. Supporting Standard (STAAR)
Human biology IBronchi - large tubules that branch from the trachea to carry air in and out of the lungs. Capillaries - the smallest blood vessels found in very rich networks
between arteries and veins; the site where many substances are exchanged. Antibodies - a specific protein produced by B lymphocytes that attaches to an antigen and leads to its removal. Read more...iWorksheets :4Vocabulary :7 Human biology IIAntigen - a molecule that the immune system recognizes as part of the body or foreign to the body. Appendicular skeleton - a part of the skeleton composed of 126 bones found in the flexible regions of the body, including shoulders, hips and limbs. Axial skeleton - the central, anchoring part of the bony skeleton that
consists of the skull, backbone (vertebrae) and rib cage. Bile - a chemical produced by the liver and stored temporarily in the gall bladder that is released into the intestines to help in fat digestion. Read more...iWorksheets :3Vocabulary :7 7.12 (D) Differentiate between structure and function in plant and animal cell organelles, including cell membrane, cell wall, nucleus, cytoplasm, mitochondrion, chloroplast, and vacuole. Supporting Standard (STAAR)
Cell structure and functionMatch each Cell structure term to its definition like DNA, Lysosomes, Mitochondrion, Lipids, Endoplasmic reticulum, Osmosis and many more. What are the organelles that provide the energy to sperm cells? What hemoglobin, insulin, albumin and maltase are composed of? These animal and plant cell worksheets recommended for students of High School Biology. Read more...iWorksheets :3Vocabulary :5 7.12 (F) Recognize that according to cell theory all organisms are composed of cells and cells carry on similar functions such as extracting energy from food to sustain life. Supporting Standard (STAAR)
Introduction to cellsAll living things are made from one or more cells. The nucleus is the control center of the cell. It houses the nucleolus and genetic material (chromatin) used for directing cell functions. Nuclear pores allow materials to pass in and out of the nucleus. The nuclear envelope is a membrane which surrounds and protects the nucleus. The nucleolus produces ribosomes. Ribosomes are factories that produce proteins needed by the cell. Lysosomes contain chemicals (enzymes) that break down and recycle harmful materials. Read more...iWorksheets :3Vocabulary :4 Cell processesFreeCellular metabolism is the set of chemical reactions that occur in living organisms in order to maintain life. Living organisms are unique in that they can extract energy from their environments and use it to carry out activities such as growth, development, and reproduction. Read more...iWorksheets :3Vocabulary :7 (7.14) Organisms and environments. The student knows that reproduction is a characteristic of living organisms and that the instructions for traits are governed in the genetic material. The student is expected to:
7.14 (C) Recognize that inherited traits of individuals are governed in the genetic material found in the genes within chromosomes in the nucleus. Supporting Standard (STAAR)
Cell ReproductionThe process where one cell forms two identical daughter cells. Mitosis is how somatic—or non-reproductive cells—divide. Meiosis is cell division that creates sex cells, like female egg cells or male sperm cells. Meiosis has two cycles of cell division, called Meiosis I and Meiosis II. Read more...iWorksheets :4 Nucleic acids and protein synthesisThe term nucleic acid is the name for DNA and RNA. They are composed of nucleotides. DNA molecules are double-stranded and RNA molecules are single-stranded. To initiate the process of information transfer, one strand of the double-stranded DNA chain serves as a template for the synthesis of a single strand of RNA that is complementary to the DNA strand. Read more...iWorksheets :4Vocabulary :3 Genetics and heredity IHow many chromosomes would normally be contained in a gamete? Match each Genetics and heredity term to its definition like Genetic code, Crossing-over, Fertilization, Codon, Dominant allele, Ribosomes, Sex cells, Punnett square, Prophase II. Read more...iWorksheets :4Vocabulary :7 (6.12) Organisms and environments. The student knows all organisms are classified into Domains and Kingdoms. Organisms within these taxonomic groups share similar characteristics which allow them to interact with the living and nonliving parts of their ecosystem. The student is expected to:
6.12 (D) Identify the basic characteristics of organisms, including prokaryotic or eukaryotic, unicellular or multicellular, autotrophic or heterotrophic, and mode of reproduction, that further classify them in the currently recognized Kingdoms. Supporting Standard (STAAR)
Evolution and classificationCategorize organisms using a hierarchical classification system based on similarities and differences. Evolutionary theory is a scientific explanation for the unity and diversity of life. Analyze the effects of evolutionary mechanisms, including genetic drift, gene flow, mutation and recombination. Read more...iWorksheets :3 Introduction to plantsWhich woody plant structure possesses vascular tissue lenticels? From which part of the seed will the leaves and upper portions of the stem of a plant develop? Match each plants term to its definition like Lactic acid fermentation, ovule, gymnosperm, guard cells, phloem, vascular tissue, root cap. Read more...iWorksheets :3Vocabulary :5 Microorganisms IITaxonomy is the classification of all known living organisms that shows
relationships between different organisms. Pseudopod is false feet; temporary fingerlike projections a one-celled organism, such as an amoeba, uses to move. Protozoa - single-celled, animal-like protist that has the ability to move. Mycelium - a mass of fungal hyphae that absorbs nutrients. Read more...iWorksheets :3Vocabulary :5 Introduction to animalsClassification - the process of grouping items together according to their
similarities. Kingdom - large category included in scientific classification system and the taxonomic category above phylum; scientists recognize six kingdoms: animals, plants, fungi, protista, eubacteria, and archaebacteria. Vertebrates - animals that have a backbone; five main groups of vertebrates: fish, birds, reptiles, amphibians and mammals. Read more...iWorksheets :4Vocabulary :3 Scientific Investigation and Reasoning Skills: These skills will not be listed under a separate reporting category. Instead, they will be incorporated into at least 40% of the test questions in reporting categories 1-4 and will be identified along with content standards.
(8.1) Scientific investigation and reasoning. The student, for at least 40% of instructional time, conducts laboratory and field investigations following safety procedures and environmentally appropriate and ethical practices. The student is expected to:
8.1 (A) Demonstrate safe practices during laboratory and field investigations as outlined in the Texas Safety Standards. (STAAR)
The science of biologyThe processes of science include the formulation of scientifically investigable questions, construction of investigations into those questions, the collection of appropriate data, the evaluation of the meaning of those data, and the communication of this evaluation. Scientific knowledge is based on observation and inference; it is important to recognize that these are very different things. Read more...iWorksheets :3 Lab investigations/scientific methodA biologist reported success in breeding a tiger with a lion, producing healthy offspring. Other biologists will accept this report as fact only if other researchers can replicate the experiment. Read more...iWorksheets :3 The Science of ChemistryWhich substance is a binary compound - ammonia, argon, glucose or glycerol? Which molecule is polar and contains polar bonds? Which atom will form an ionic bond with a Br atom - N, Li, O or C? By which process is petroleum separated into its components according to their different boiling points? Read more...iWorksheets :3 (8.4) Scientific investigation and reasoning. The student knows how to use a variety of tools and safety equipment to conduct science inquiry. The student is expected to:
8.4 (A) Use appropriate tools to collect, record, and analyze information, including lab journals/notebooks, beakers, meter sticks, graduated cylinders, anemometers, psychrometers, hot plates, test tubes, spring scales, balances, microscopes, thermometers, calculators, computers, spectroscopes, timing devices, and other equipment as needed to teach the curriculum. (STAAR)
Introduction to cellsAll living things are made from one or more cells. The nucleus is the control center of the cell. It houses the nucleolus and genetic material (chromatin) used for directing cell functions. Nuclear pores allow materials to pass in and out of the nucleus. The nuclear envelope is a membrane which surrounds and protects the nucleus. The nucleolus produces ribosomes. Ribosomes are factories that produce proteins needed by the cell. Lysosomes contain chemicals (enzymes) that break down and recycle harmful materials. Read more...iWorksheets :3Vocabulary :4 8.4 (B) Use preventative safety equipment, including chemical splash goggles, aprons, and gloves, and be prepared to use emergency safety equipment, including an eye/face wash, a fire blanket, and a fire extinguisher. (STAAR)
The science of biologyThe processes of science include the formulation of scientifically investigable questions, construction of investigations into those questions, the collection of appropriate data, the evaluation of the meaning of those data, and the communication of this evaluation. Scientific knowledge is based on observation and inference; it is important to recognize that these are very different things. Read more...iWorksheets :3 Lab investigations/scientific methodA biologist reported success in breeding a tiger with a lion, producing healthy offspring. Other biologists will accept this report as fact only if other researchers can replicate the experiment. Read more...iWorksheets :3 The Science of ChemistryWhich substance is a binary compound - ammonia, argon, glucose or glycerol? Which molecule is polar and contains polar bonds? Which atom will form an ionic bond with a Br atom - N, Li, O or C? By which process is petroleum separated into its components according to their different boiling points? Read more...iWorksheets :3 Standards
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