South Carolina 7th Grade Science Standards

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PS1 Matter and Its Interactions
- 7-PS1-1 Develop models to describe the atomic composition of simple molecules and extended structures.
- 7-PS1-2 Analyze and interpret data on the properties of substances before and after the substances interact to determine if a chemical reaction has occurred.
- 7-PS1-3 Gather and make sense of information to describe that synthetic materials come from natural resources and impact society.
- 7-PS1-5 Develop and use a model to describe how the total number of atoms does not change in a chemical reaction and thus mass is conserved.
- 7-PS1-6 Undertake a design project to construct, test, and modify a device that either releases or absorbs thermal energy by chemical processes.
PS3 Energy
- 7-PS3-1 Construct and interpret graphical displays of data to describe the proportional relationships of kinetic energy to the mass of an object and to the speed of an object.
- 7-PS3-2 Develop a model to describe that when the arrangement of objects interacting at a distance changes, different amounts of potential energy are stored in the system.
- 7-PS3-5 Construct, use, and present arguments to support the claim that when the kinetic energy of an object changes, energy is transferred to or from the object.

LS1 From Molecules to Organisms: Structures and Processes
- 7-LS1-6 Construct a scientific explanation based on evidence for the role of photosynthesis in the cycling of matter and flow of energy into and out of organisms.
- 7-LS1-7 Develop a model to describe how food molecules in plants and animals are rearranged through chemical reactions forming new molecules that support growth and/or release energy as this matter moves through an organism.
LS2 Ecosystems: Interactions, Energy, and Dynamics
- 7-LS2-1 Analyze and interpret data to provide evidence for the effects of resource availability on organisms and populations of organisms in an ecosystem.
- 7-LS2-2 Construct an explanation that predicts patterns of interactions among organisms across multiple ecosystems.
- 7-LS2-3 Develop a model to describe the cycling of matter and flow of energy among living and nonliving parts of an ecosystem.
- 7-LS2-4 Construct an argument supported by empirical evidence that changes to physical or biological components of an ecosystem affect populations.
- 7-LS2-5 Evaluate competing design solutions for maintaining biodiversity and ecosystem services.

ESS3 Earth and Human Activity
- 7-ESS3-1 Construct a scientific explanation based on evidence for how the uneven distributions of Earth’s mineral, energy, and groundwater resources are the result of past and current geoscience processes.
- 7-ESS3-3 Apply scientific principles to design a method for monitoring and minimizing a human impact on the environment.
- 7-ESS3-4 Construct an argument supported by evidence for how increases in human population and per-capita consumption of natural resources impact Earth’s systems.
- 7-ESS3-5 Ask questions to clarify evidence of the factors that have impacted global temperatures over the past century.