1
By XKCD
This small infographic shows the thickness of see ice up against famous city skylines. Notice how much bigger the ice sheets are than the cities!
Grade Level   4 5 6 7 8 9 10 11 12
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2
Animations about our planet, Earth. Part I: Our Island in Space, Part II: Earth Materials, Part III: Tectonic Activity of a Dynamic Planet, Part IV: History Before History, Part V: Earth Resources, and Part VI: Processes and problems at the Earth's Surface.
Grade Level   9 10 11 12
Teaching Media Videos or Animations
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