Water-Worlds

National Geographic
Contributed By
National Geographic
Resource Type
Classroom Material
Keywords
Earth Science Astronomy Geology Oceanography
Subjects
Earth and Space Sciences
Grade Levels
Grade 5 Grade 6 Grade 7 Grade 8
Related Resources

Water-Worlds

The collection of water on our planet—in the ocean, the ground, and the atmosphere—collectively forms the hydrosphere, making it a water-world. But as knowledge expands, we've learned Earth is not the only one that would classify as a water-world.
Author

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