| A | B |
|---|
| What are the three main layer of Earth? | core, mantle, crust |
| Which force wears away at Earth's surface? | weathering |
| What causes weathered material to move? | erosion |
| What is formed when continental plates collide together? | mountains |
| What can cause sharp, rough mountains to become rounded and smooth over time? | wind and rain |
| Thick pieces of Earth's crust that are made of solid rock are--- | continents |
| What are Earth's surface features called? | landforms |
| How do volcanoes help build up new land? | By adding lava to the Earth's surface |
| Which two features of a cave are formed by the slow buildup of minerals from water drops? | stalagmite and stalactite |
| What three main processes help form topsoil? | weathering of rock, decay of trees, erosion of hills |
