Activity 1: Assessment. Estimated duration: 5 min
Assessment with 5 questions from Interactions Among Earth's Systems.
5 questions assessment
Activity 2: Instructional Game. Estimated duration: 7 min
Cycling of Matter and Energy on Earth (Mid)
Learn about matter cycles and energy flow in this illustrated walkthrough. You will learn about how Earth's four spheres interact with each other, and you will help maintain Earth's energy balance between its four spheres. You will use arrows to move clouds that will either absorb the sun's rays or let them pass and warm the Earth.
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