| A | B |
| landforms | natural shapes or features of the Earth's surface |
| mountain | a place on Earth that is much higher than the land around it |
| valley | a lowland between higher lands like mountains |
| canyon | a deep valley with very steep sides |
| plain | a flat area on the Earth's surface |
| plateau | a flat area higher than the land around it |
| barrier island | a thin island near a coast |
| weathering | the way rocks are broken down into smaller pieces |
| erosion | movement of weathered rock and soil |
| glacier | huge sheets of ice |
| earthquake | the shaking of the Earth's surface |
| volcano | an opening in Earth's surface where lava flows |
| flood | large amount of water that covers dry land |