Land Beneath Our Feet #2
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
Help!
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| continental drift | Wegner's theory that Earth's continents were once joined in a single landmass and gradually moved apart
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| Pangaea | Wegner's name for the supercontinent
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| mid-ocean ridge | underwater mountain ranges
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| convection | energy transfer by the movement of a material
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| convection currents | sinking and rising motion that occurs through the transfer of heat energy
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| theory of plate tectonics | theory that states that Earth's lithosphere is made up of huge plates that move over the surface of the Earth
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| divergent boundary | occurs where plates move/pull apart
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| convergent boundary | occurs where plates move/push together
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| transform boundary | occurs where plates scrape/slide by one another
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| rift valley | happens where ridges continue to widen and create a gap and molten material rises to build new crust
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| magnetic reversal | where the North and South Poles switch position
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| hot spots | where heated rock rises in plumes or thin columns from the mantle
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| subduction | one plate sinks beneath another
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| continental-continental collision | 2 continental plates carrying continental crust push together
forming mountains
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| oceanic-oceanic subduction | 2 oceanic plates come together as one sinks beneath the other due to density (forms ocean trenches and island arcs)
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| oceanic-continental subduction | when oceanic crust sinks under continental crust
(forms deep ocean trenches and coastal mountains)
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Review the information in the table. When you are ready to quiz yourself you can hide individual columns or the entire table. Then you can click on the empty cells to reveal the answer. Try to recall what will be displayed before clicking the empty cell.
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Or sort by any of the columns using the down arrow next to any column heading.
If you know all the data on any row, you can temporarily remove it by tapping the trash can to the right of the row.
To hide a column, click on the column name.
To hide the entire table, click on the "Hide All" button.
You may also shuffle the rows of the table by clicking on the "Shuffle" button.
Or sort by any of the columns using the down arrow next to any column heading.
If you know all the data on any row, you can temporarily remove it by tapping the trash can to the right of the row.
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Created by:
Ms. Long 6
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