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Crash Course: The Solar System & the Earth (14:00)

Key Ideas

As this video progresses, key ideas will be introduced to invoke discussion.

Key Ideas

Think about the following questions as you watch the video

  1. 01:20 Why is Pluto no longer considered a planet?
  2. 12:18 What are some of the benefits of plate tectonic activity?
  3. 13:16 Why has our knowledge of planets and solar systems changed in the last 20 years?
  4. 02:08 What does it mean to say that the Sun is a second generation star?
  5. 04:41 What were some of the materials orbiting the Sun after it formed, and why did the dust begin to stick together (that is, accrete)?
  6. 05:57 How long did our Solar System take to get to the form it has today
  7. 07:10 What happened to the heavier metals when the planet formed?
  8. 07:27 What happened to the gases that rose up from beneath the Earth’s crust and were released in volcanic eruptions?
  9. 08:29 The conditions of the Hadean eon were awful, but they did help make the Earth more chemically complex. How?
  10. 09:30 When and why did the oceans form?
  11. 09:50 Why is the Earth compared to an egg when the discussion of plate tectonics begins in this video?