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Forces (con, de)
| term | definition/description |
|---|---|
| lithosphere (crust) | Outer layer of the Earth, made of rock |
| mantle | layer of rock beneath Earth's crust |
| core | center layer of Earth |
| Plate | rigid blocks of crust and upper mantle rock |
| magma | hot, soft rock from Earth's mantle |
| volcano | mountain formed by lava and ash |
| earthquake | shaking of the ground caused by the sudden release of energy in Earth's crust |
| fault | places where pieces of the crust move |
| pangea | 225 million years ago, all of the land on Earth was joined together in one "supercontinent" |
| continental drift | theory of how Earth's continents move over its surface |
| erosion | process of moving sediment from one place to another |
| deposition | process of dropping, or depositing, sediment in a new location |
| sediment | soil, sand, and other tiny pieces, or particles |
| glacier | thick sheets of ice, formed in areas where more snow falls during the winter than melts during the summer |
| weathering | process of breaking rock into sediment |
| seismograph | instrument that measures seismic waves |