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MS-ESS2-2

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MS-ESS2-2 Earth’s Systems
Students who demonstrate understanding can: Construct an explanation based on evidence for how geoscience processes have changed Earth’s surface at varying time and spatial scales.
Clarification Statement: Emphasis is on how processes change Earth’s surface at time and spatial scales that can be large (such as slow plate motions or the uplift of a large mountain ranges) or small (such as rapid landslides on microscopic geochemical reactions), and how many geoscience processes usually behave gradually but are punctuated by catastrophic events (such as earthquakes, volcanoes, and meteor impacts). Examples of geoscience processes include surface weathering and deposition by the movements of water, ice, and wind. Emphasis is on geoscience processes that shape local geographic features, where appropriate.
Assessment Boundary: N/A
Crosscutting Concepts	Science & Engineering Practices	Disciplinary Core Ideas
Scale, Proportion, and Quantity: Time, space, and energy phenomena can be observed at various scales using models to study systems that are too large or too small.	Constructing Explanations (for science) and Designing Solutions (for engineering): Constructing explanations and designing solutions in 6– 8 builds on K–5 experiences and progresses to include constructing explanations and designing solutions supported by multiple sources of evidence consistent with scientific ideas, principles, and theories. Construct a scientific explanation based on valid and reliable evidence obtained from sources (including the students’ own experiments) and the assumption that theories and laws that describe the natural world operate today as they did in the past and will continue to do so in the future.	Earth’s Materials and Systems: The planet’s systems interact over scales that range from microscopic to global in size. These interactions have shaped Earth’s history and will determine its future. The Roles of Water in Earth’s Surface Processes: Water’s movements—both on the land and underground—cause weathering and erosion, which change the land’s surface features and create underground formations.