Part of GED® Science: Earth & Space Science
GED® Science: Earth's Water & the Water Cycle (Deep Dive)
A deep dive into Earth's water, expanding the single 'Earth's Water & the Water Cycle' lesson from the GED® Earth & Space Science course into a full mini-course. You'll see where Earth's water really is (and why so little is usable), follow the full water cycle from the ocean to the clouds and back into the ground, and learn the physics of how water changes state and stores energy. You'll also explore clouds and precipitation, groundwater and aquifers, and why fresh water is a limited resource worth protecting. Plain language, all-new labeled diagrams, common-misconception warnings, and GED®-style practice with full explanations throughout.
📚 Course Curriculum
Earth is the 'blue planet': about 71% of its surface is covered by water. With that much water, it's tempting to think we'll never run …
Open trial session →Earth's water is always on the move, recycled endlessly through the water cycle. Two things power the loop: the Sun (which supplies the energy) and …
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The water cycle works because water easily changes between three states — solid (ice), liquid (water), and gas (water vapor) — at the everyday temperatures …
Open trial session →Where do clouds actually come from? The key is rising air. When air near the warm ground rises, it expands and cools as it goes …
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Once precipitation reaches the ground, it goes two main ways: it runs off the surface, or it soaks in. Water that runs off flows downhill …
Open trial session →The water cycle isn't just nature's plumbing — it's where our drinking water, farms, and cities get their supply. And because usable fresh water is …
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Course Syllabus
Course Outcomes
📝 Practice Questions
30 interactive questions with instant feedback and explanations.
Enroll for free to unlock the full practice bank after the trial sessions.