Questions and Answers
What happens to the rock as it spreads near the Earth's surface?
It loses heat
What happens to the rock containing carbon from dead plankton as the plates collide?
It is carried deep into the Earth
What is released back into the atmosphere during an eruption?
Carbon dioxide and gas
Study Notes
- Hot rocks near the Earth's surface rise due to heat from the core
- These rocks spread in two directions and go sideways, eventually losing heat
- Cooler rocks sink back down, dragging the Earth's crust apart and causing continents to move
- During plate collisions, carbon-containing rock from the seafloor is carried deep into the Earth
- This rock layer melts, releasing carbon dioxide and gas back into the atmosphere during volcanic eruptions.
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