Summary
Completes the four-spheres framework by introducing the hydrosphere (all water) and atmosphere (all air), and shows how all four spheres constantly interact to make Earth livable.
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All ages
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Teaching resources
Discussion questions
Discussion
- What is the hydrosphere? Where is most of Earth's water found?
- What is the atmosphere? What gases make it up?
- Choose two of the four spheres. Give a specific example of how they interact.
- Which sphere do you think is most important for life? Defend your choice.
Quick work-a-long
Vocabulary: hydrosphere, atmosphere, sphere, interact, water cycle, climate.
Try it: Draw Earth and label all four spheres with arrows showing two interactions between them (e.g., rain from atmosphere falls into hydrosphere).

