What's New: Worksheets and Study Guides

Place Value First Grade Math
Whole Numbers Kindergarten Math
Whole Numbers Kindergarten Math
Shapes First Grade Math
Patterns First Grade Math
Multiplication Third Grade Math
Addition Facts Second Grade Math

Pennsylvania Standards for Seventh Grade Science

Acids, bases and saltsWorksheets: 4Study Guides: 1Vocabulary: 1Agents of Erosion and DepositionFreeWorksheets: 3Study Guides: 1Vocabulary: 4Bacteria and VirusesWorksheets: 4Study Guides: 1Vocabulary: 4Chemistry in our worldWorksheets: 3Study Guides: 1Vocabulary: 1ClimateWorksheets: 3Study Guides: 1Vocabulary: 5EarthquakesWorksheets: 5Study Guides: 1Vocabulary: 6ForcesWorksheets: 4Study Guides: 1Vocabulary: 1Introduction to PlantsWorksheets: 4Study Guides: 1Vocabulary: 5Mixtures, solutions and compoundsWorksheets: 3Study Guides: 1Vocabulary: 1Protists and FungiWorksheets: 4Study Guides: 1Vocabulary: 6The World of Life ScienceWorksheets: 4Study Guides: 1Vocabulary: 2VolcanoesWorksheets: 4Study Guides: 1Vocabulary: 3Weathering of rocks and soil formationWorksheets: 4Study Guides: 1Vocabulary: 4Work and machinesWorksheets: 4Study Guides: 1

PA.3. Science and Technology and Engineering Education

3.1. Biological Sciences

3.1.A. Organisms and Cells
3.1.7.A2. Describes how organisms obtain and use energy throughout their lives.
3.1.7.A3. Explain why the life cycles of different organisms have varied lengths.
3.1.7.A4. Explain how cells arise from pre-existing cells.
3.1.7.A5. Explain how the cell is the basic structural and functional unit of living things.
3.1.7.A6. Identify the levels of organization from cell to organism.
3.1.7.A7. Compare life processes (e.g. growth, digestion) at the organism level with life processes at the cellular level.
3.1.7.A8. (MODELS) Apply the appropriate models to show interactions among organisms in an environment.
3.1.B. Genetics
3.1.7 B5. (PATTERNS) Compare and contrast observable patterns in the physical characteristics across families, strains and species.
3.1.7.B1a. Explain how genetic instructions influence inherited traits.
3.1.7.B1b. Identify Mendelian patterns of inheritance.
3.1.7.B2. Compare sexual reproduction with asexual reproduction.
3.1.7.B4. Describe how selective breeding and biotechnology can alter the genetic composition of organisms.
3.1.C. Evolution
3.1.7.C1. Describe how natural selection is an underlying factor in a population's ability to adapt to changes.
3.1.7.C2b. Explain that mutations can alter a gene and are the original source of new variations in a population.

3.2. Physical Sciences: Chemistry and Physics

3.2.A. Chemistry
3.2.7.A1a. Differentiate between elements, compounds, and mixtures.
3.2.7.A1b. Identify groups of elements that have similar properties.
3.2.7.A2. Identify atoms as the basic building blocks of matter and that elements are composed of one type of atom.
3.2.7.A3. Explain how energy transfer can affect the chemical and physical properties of matter.
3.2.7.A4. Describe how reactants change into products in simple chemical reactions.
3.2.B. Physics
3.2.7.B1a. Describe how unbalanced forces acting on an object change its velocity.
3.2.7.B1b. Analyze how observations of displacement, velocity, and acceleration provide necessary and sufficient evidence for the existence of forces.
3.2.7.B2. Describe how energy can be changed from one form to another (transformed) as it moves through a system or transferred from one system to another system.
3.2.7.B3a. Differentiate among convection, conduction, and radiation.
3.2.7.B3b. Explain why heat energy consists of the random motion and vibrations of the particles of matter.
3.2.7.B4a. Explain how electrical current is produced by the flow of electrons.
3.2.7.B4b. Explain and demonstrate how electric current produces magnetic forces and how moving magnets produce electric current.
3.2.7.B5a. Demonstrate that visible light is a mixture of many different colors.
3.2.7.B5b. Explain the construct of the electromagnetic spectrum.
3.2.7.B5c. Describe how sound and light energy are transmitted by waves.
3.2.7.B6b. (ENERGY) Demonstrate how the transfer of heat energy causes temperature changes.

3.3. Earth and Space Sciences

3.3.A. Earth Structure, Processes and Cycles
3.3.7.A1a. Define basic features of the rock cycle.
3.3.7.A1b. Describe the layers of the earth.
3.3.7.A1c. Differentiate among the mechanisms by which heat is transferred through the Earth's system.
3.3.7.A2. Explain land use in relation to soil type and topography.
3.3.7.A3a. Explain and give examples of how physical evidence, such as fossils and surface features of glaciation support theories that the Earth has evolved over geologic time.
3.3.7.A3b. Compare geologic processes over time.
3.3.7.A4a. Differentiate among Earth's water systems.
3.3.7.A4b. Describe the motions of tides and identify their causes.
3.3.7.A5a. Describe basic elements of meteorology.
3.3.7.A5b. Explain the relationship between the energy provided by the sun and the temperature differences among water, land and atmosphere.
3.3.7.A6a. (MODELS/SCALES) Locate significant geologic structures using various mapping representations.
3.3.7.A6b. (CONSTANCY/CHANGE) Describe changes in atmospheric conditions associated with various weather patterns.
3.3.B. Origin and Evolution of the Universe
3.3.7.B1a. Explain how gravity is the major force in the formation of the planets, stars, and the solar system.
3.3.7.B1c. Compare and contrast properties and conditions of objects in the solar system to those on Earth.
3.3.7.B2a. (SCALE AND MEASUREMENT) Identify a variety of instruments used to gather evidence about the universe.
3.3.7.B2c. (SCALE) Relate planetary size and distance in our solar system using an appropriate scale model.

3.4. Technology and Engineering Education

3.4.A. The Scope of Technology
3.4.7.A1. Explain how technology is closely linked to creativity, which has resulted in innovation and invention.
3.4.7.A2. Explain how different technologies involve different sets of processes.
3.4.B. Technology and Society
3.4.7.B2. Explain how decisions to develop and use technologies may be influenced by environmental and economic concerns.
3.4.7.B3. Describe how invention and innovation lead to changes in society and the creation of new needs and wants.
3.4.7.B4. Explain how many inventions and innovations have evolved by using deliberate and methodical processes of tests and refinements.
3.4.D. Abilities for a Technological World
3.4.7.D1. Identify and collect information about everyday problems that can be solved by technology and generate ideas and requirements for solving a problem.
3.4.7.D2. Select and safely use appropriate tools, products and systems for specific tasks.
3.4.7.D3. Use data collected to analyze and interpret trends in order to identify the positive or negative effects of a technology.
3.4.E. The Designed World
3.4.7.E1. Investigate recent advancements in medical technologies and their impact on quality of life.
3.4.7.E4. Illustrate how information can be acquired and sent through a variety of technological sources, including print and electronic media.

PA.4. Environment and Ecology

4.1. Ecology

4.1.7.A. Describe the relationships between biotic and abiotic components of an ecosystem.
4.1.7.A.1. Compare and contrast different biomes and their characteristics.
4.1.7.A.2. Describe symbiotic and predator/prey relationships.
4.1.7.C. Explain the flow of energy within an ecosystem.
4.1.7.C.1. Compare and contrast the flow of energy between organisms in different habitats.
4.1.7.C.2. Explain the concept of trophic levels.
4.1.7.D. Explain how biological diversity relates to the viability of ecosystems.
4.1.7.D.3. Explain how an adaptation is an inherited, structure, function, or behavior that helps an organism survive and reproduce.

4.3. Natural Resources

4.3.7.A. Explain how products are derived from natural resources.
4.3.7.A.2. Differentiate between renewable and nonrenewable resources.

4.5. Humans and the Environment

4.5.7.A. Describe how the development of civilization affects the use of natural resources.
4.5.7.A.1. Compare and contrast how people use natural resources in sustainable and nonsustainable ways throughout the world.
4.5.7.C. Explain how human actions affect the health of the environment.
4.5.7.C.1. Identify residential and industrial sources of pollution and their effects on environmental health.
4.5.7.D. Describe the wastes derived from using resources, how the waste is managed, and the potential impact on the environment.
4.5.7.E. Describe how length and degree of exposure to pollutants may affect human health.
4.5.7.E.1. Identify diseases/conditions that have been associated with exposure to pollutants.

PA.SI. Science as Inquiry

SI.3. Design and conduct a scientific investigation and understand that current scientific knowledge guides scientific investigations.

SI.4. Describe relationships using inference and prediction.

SI.5. Use appropriate tools and technologies to gather, analyze, and interpret data and understand that it enhances accuracy and allows scientists to analyze and quantify results of investigations.

SI.6. Develop descriptions, explanations, and models using evidence and understand that these emphasize evidence, have logically consistent arguments, and are based on scientific principles, models, and theories.

SI.7. Analyze alternative explanations and understanding that science advances through legitimate skepticism.

SI.8. Use mathematics in all aspects of scientific inquiry.

SI.9. Understand that scientific investigations may result in new ideas for study, new methods, or procedures for an investigation or new technologies to improve data collection.

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