MS-PS2-4 Motion and Stability: Forces and Interactions
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Students who demonstrate understanding can: Construct and present arguments using evidence to support the claim that gravitational interactions are attractive and depend on the masses of interacting objects. |
Clarification Statement: Examples of evidence for arguments could include data generated from simulations or digital tools; and charts displaying mass, strength of interaction, distance from the Sun, and orbital periods of objects within the solar system.
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Assessment Boundary: Assessment does not include Newton’s Law of Gravitation or Kepler’s Laws.
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Crosscutting Concepts
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Science & Engineering Practices
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Disciplinary Core Ideas
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Systems and System Models:
- Models can be used to represent systems and their interactions—such as inputs, processes and outputs—and energy and matter flows within systems.
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Engaging in Argument from Evidence:
- Engaging in argument from evidence in 6–8 builds from K–5 experiences and progresses to constructing a convincing argument that supports or refutes claims for either explanations or solutions about the natural and designed world.
- Construct and present oral and written arguments supported by empirical evidence and scientific reasoning to support or refute an explanation or a model for a phenomenon or a solution to a problem.
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Types of Interactions:
- Gravitational forces are always attractive.
- There is a gravitational force between any two masses, but it is very small except when one or both of the objects have large mass—e.g., Earth and the sun.
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Introduction to the OKSci Framework
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