Wyoming Content and Performance Standards for Eighth Grade Science

Bones, muscles, and skin
FreeThe 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: 6
Chemical bonding
FreeChemical 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 reactions
When 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: 4Study Guides: 1Vocabulary Sets: 1
Circulation and immunity
The 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
An 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: 3
Forces in fluids
Pressure 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: 1
Ancient 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: 4Study Guides: 1Vocabulary Sets: 2
Geologic time
Age 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: 4Study Guides: 1
Heat and heat technology
All 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
Introduction to physical science
Safety 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
When 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: 4Study Guides: 1Vocabulary Sets: 2
A 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: 4Study Guides: 1Vocabulary Sets: 3
Mirrors and lenses
The 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
Modern Genetics
The 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: 4Study Guides: 1Vocabulary Sets: 5
Organic compounds
Organic 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: 1
Our Solar System
The 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
Plate tectonics
The 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: 4Study Guides: 1Vocabulary Sets: 7
Properties of atoms
The 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: 4Study Guides: 1Vocabulary Sets: 1
Respiration and excretion
Air 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
Types 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: 2
Sound 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: 4Study Guides: 1Vocabulary Sets: 1
Stars, Galaxies and the Universe
Stars 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: 2
The Digestive and nutrition
There 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: 4
The Endocrine system and Reproduction
The 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 energy of waves
When 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
The Evolution and interaction of Living Things
Over 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
The Movement of Ocean Water
The 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: 1
The nervous system
The 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: 5
Understanding Weather
The 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: 4Study Guides: 1Vocabulary Sets: 3
Earth'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

WY.1. Concepts and Processes: In the context of unifying concepts and processes, students develop an understanding of scientific content through inquiry. Science is a dynamic process; concepts and content are best learned through inquiry and investigation. Concepts in Life Systems, Earth and Space Systems, and Physical Systems are taught within the context of the following Unifying Concepts and Processes of Science: Systems, classification, order and organization; Evidence, models, and explanations; Change, constancy, and measurement; Evolution and equilibrium and Form and function

SC8.1.1. Life Systems: Levels of Organization in Living Systems: Students model the cell as the basic unit of a living system. They realize that all functions that sustain life act within a single cell and cells differentiate into specialized cells, tissues, organs, and organ systems.

Introduction to cells
All 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 structure and function
Match 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 :4
Human biology I
Worksheets :4Vocabulary :7
Human biology II
Worksheets :3Vocabulary :7

SC8.1.2. Life Systems: Reproduction and Heredity: Students describe reproduction as a characteristic of all living systems, which is essential to the continuation of species, and identify and interpret traits, patterns of inheritance, and the interaction between genetics and environment.

Genetics and heredity I
How 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
Plant structure and function
Plants are living organisms made up of cells. Plants need sunlight and water to live and grow healthy. Many plants, but not all plants, produce flowers, which make fruit and seeds in order for the plant to reproduce. There are two different types of root systems: A fibrous root system has many roots that grow in many different directions. Plants that have a taproot system have only one large main root growing from the plant’s stem. Read more...iWorksheets :4Vocabulary :2

SC8.1.3. Life Systems: Evolution as a Theory: Students explain evolution as a theory and apply the theory to the diversity of species, which results from natural selection and the acquisition of unique characteristics through biological adaptation.

Evolution and classification
Categorize 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

SC8.1.4. Life Systems: Diversity of Organisms: Students investigate the interconnectedness of organisms, identifying similarity and diversity of organisms through a classification system of hierarchical relationships and structural homologies.

Evolution and classification
Categorize 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 plants
Which 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 :2
Microorganisms II
Worksheets :3Vocabulary :5
Introduction to animals
Worksheets :4Vocabulary :3

SC8.1.5. Life Systems: Behavior and Adaptation: Students recognize behavior as a response of an organism to an internal or environmental stimulus and connect the characteristics and behaviors of an organism to biological adaptation.

Evolution and classification
Categorize 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 animals
Worksheets :4Vocabulary :3

SC8.1.6. Life Systems: Interrelationships of Populations and Ecosystems: Students illustrate populations of organisms and their interconnection within an ecosystem, identifying relationships among producers, consumers, and decomposers.

Evolution and classification
Categorize 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 I
Match 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 II
Match 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

SC8.1.10. Physical Systems: The Structure and Properties of Matter: Students identify characteristic properties of matter such as density, solubility, and boiling point and understand that elements are the basic components of matter.

SC8.1.11. Physical Systems: Physical and Chemical Changes in Matter: Students evaluate chemical and physical changes, recognizing that chemical change forms compounds with different properties and that physical change alters the appearance but not the composition of a substance.

Elements - Set I
Worksheets :3
Elements - Set II
Worksheets :3
Kinetics and Equilibrium
Worksheets :3
Chemical Reactions
Worksheets :3

SC8.1.12. Physical Systems: Forms and Uses of Energy: Students investigate energy as a property of substances in a variety of forms with a range of uses.

WY.2. Science as Inquiry: Students demonstrate knowledge, skills, and habits of mind necessary to safely perform scientific inquiry. Inquiry is the foundation for the development of content, teaching students the use of processes of science that enable them to construct and develop their own knowledge. Inquiry requires appropriate field, classroom, and laboratory experiences with suitable facilities and equipment.

SC8.2.5. Students properly use appropriate scientific and safety equipment, recognize hazards and safety symbols, and observe standard safety procedures.

The science of biology
The 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 method
Worksheets :3
The Science of Chemistry
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Lab Investigations/Scientific Method
Worksheets :3

WY.3. History and Nature of Science in Personal and Social Decisions: Students recognize the nature of science, its history, and its connections to personal, social, economic, and political decisions. Historically, scientific events have had significant impacts on our cultural heritage.

SC8.3.2. Students explore how scientific information is used to make decisions.

SC8.3.2.b. Interdisciplinary connections of the sciences and connections to other subject areas and careers in science or technical fields.
Microorganisms I
Worksheets :4Vocabulary :5

WY.RST.6-8. Reading Standards for Literacy in Science and Technical Subjects

Craft and Structure

RST.6-8.4. Determine the meaning of symbols, key terms, and other domain-specific words and phrases as they are used in a specific scientific or technical context relevant to grades 6-8 texts and topics.

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