Glaciers Then and Now

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Description

In this activity, students compare two photographs (with time spans of 30-100 years between photos) of specific Alaskan glaciers to observe how glaciers have changed over the time interval. Activity is a good kickoff for learning about glaciology - how and why glaciers form, grow and shrink, and their relation to climate change.

Performance Expectations

MS-ESS2-4   Develop a model to describe the cycling of water through Earth's systems driven by energy from the sun and the force of gravity.