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Puzzling Pangea
vocabulary on plate tectonics
| Question | Answer |
|---|---|
| continental drift | the hypothesis that the continents slowly move across Earth's surface |
| Pangaea | the name of the single landmass that broke apart 200 million years ago and gave rise to today's continents |
| fossil | a trace of an ancient organism that has been preserved in rock |
| radiation | the direct transfer of energy through space by electromagnetic waves |
| conduction | the direct transfer of thermal energy from one substance that it is touching |
| convection | the transfer of thermal energy by the movement of a fluid |
| density | a measure of how much mass there is in a volume of a substance |
| convection current | the movement of a fluid, caused by differences in temperature, that transfers heat from one part of the fluid to another |
| seismic waves | vibrations that travel through Earth carrying the energy released during an earthquake |
| pressure | results from a force pressing on an area |
| crust | the layer of rock that forms Earth's outer skin |
| Basalt | dark rock with a fine texture |
| Granite | a rock that usually is a light color and has a coarse texture |
| mantle | a layer of hot rock |
| lithosphere | the uppermost part of the mantle and the crust together form a rigid layer |
| asthenosphere | the soft layer of the mantle on which the lithosphere floats |
Created by:
cachristman
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