| A | B |
|---|
| earthquake | the shaking of Earth's surface caused by the movement of the crust and mantle |
| weathering | the way rocks are broken down into smaller pieces |
| canyon | a deep valley with very steep sides |
| barrier island | a thin island with wide, sandy beaches |
| mountain | a place on Earth's surface that is much higher than the land around it |
| volcano | an opening in earth's surface from which lava flows |
| landform | the natural shape (or features) of Earth's surface |
| plain | a flat area on Earth's surface |
| plateau | a flat area higher than the land around it |
| erosion | the movement of weathered rock and soil |
| flood | a large amount of water that covers normally dry land |
| glacier | huge sheets of ice |
| valley | a lowland area between higher lands (such as mountains) |
| creep | the slow movement of soil down steep hills |
| crust | the part of Earth that folds to make mountains |
| lakes | holes made by glaciers |
