| A | B |
|---|
| earthquake | movement of the earth's crust and mantle |
| erosion | the movement of weathered rock and soil |
| flood | this happens when large amounts of water cover land that is normally dry |
| glaciers | huge sheets of ice that causes erosion of the land |
| volcano | this erupts and lava flows onto the land |
| weathering | a process that breaks rocks into smaller pieces |
| barrier island | a thin island near a coast |
| canyon | a deep valley with very steep sides |
| landforms | the natural shape or features of the earth's surface |
| mountain | a place on the earth's surface that is higher than the land around it |
| plain | a flat area |
| plateau | a flat area that is higher than the land around it |
| valley | a lowland area between highter lands such as mountains |
| creep | the slow movement of soil down steep hills |
| crust | the part of the earth that folds to make mountains |
| lakes | what the holes made by glaciers become |
| soil | does not cause weathering |
| wind, plants, water | cause weathering |
| weathering occurs in areas that have freezing weather because | water gets into cracks in rock, freezes and breaks the rock |
| floods happen in places where | there are lakes and rivers that get a lot of rain |
| damage caused by volcanoes | burns buildings and forests, covers land with lava and ash |
| floods cause bad changes to the land | by damaging buildings, and leaving mud and sand behind |
| floods cause good changes to the land | covers fields with rich soil |
