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studyguide science 1
| Question | Answer |
|---|---|
| which type of plate is older | continental |
| which type of plate is thicker | continental |
| what is it called when two oceanic plates move apart and new crust is formed | seafloor spreading |
| what is it called when one plate is pushed under another plate as they collide | sbduction |
| what is one phenomenon that can happen when two plates slip past one another | earthquakes |
| what can form when two continental plates collide | fold mountains |
| what do plates float on | upper mantle |
| new crust is created by | magma from the mantle |
| what is the name of the supercontinent that formed from 100 to 200 million years ago | pangaea |
| who first proposed the theory of continental drift | wegener |
| L wave is also known as | love wave |
| divergent boundaries are where plates are moving | toaward each other |
| the plates are always | moving |
| which plate do we live on | arabian plate |
| transform boundaries are where plates | slide |
| the plates that make up the crust fit together like pieces of a | puzzle |
| we live on the earth's outermost layer. what is it called | the crust (lithosphere) |
| the crust that carries the ocean is | oceanic plates |
| less dense and tends not to subduct | continental plates |
| what are the types of waves | s wave p wave surface wave seismic wave |