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Plate Tectonics
| Question | Answer |
|---|---|
| Type of boundary that made the Mid Atlantic Ridge | divergent |
| Type of boundary where crust collides with one another; destructive boundary (crust is destroyed or melted) | convergent |
| Type of boundary where plates slide past one another; crust is neither created nor destroyed | Transform |
| 3 characteristics of oceanic crust | thin, more dense, younger |
| 3 characteristics of continental crust | thick, less dense, older |
| Rocky, brittle layer of the Earth that makes up our tectonic plates. Layer made up of the crust and top part of the mantle. | lithosphere |
| Plastic like layer beneath the lithosphere that the tectonic plates float on. | asthenosphere |
| What causes tectonic plates to move? | convection currents |
| What layer of the earth are convection currents found in? | mantle |
| What 4 pieces of evidence did Alfred Wegener have for continental drift? | geometric (fit together like puzzle pieces), fossil, rock layer, climate |
| Why did the scientific community not accept Wegener's idea on continental drift? | He could NOT explain the mechanism (how the continents moved) |
| How fast do the tectonic plates move? | the rate that human fingernails grow |
| Type of boundary where plates move away from each other; constructive boundary (new crust is made) | divergent |
| Where do most volcanoes and earthquakes take place? | plate boundaries |
| German scientist first proposed continental drift? | Alfred Wegener |
| Name of the supercontinent , where all of the Earth's were once connected together? | Pangaea |
Created by:
bwmsScience8
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