| volcano | an opening in the Earth’s crust that allows molten rock and gases from the mantle to come up to the surface |
| tectonic plates | the plates in the Earth’s crust that are under the continents and oceans |
| earthquake | a shaking of the Earth’s crust caused by tectonic plates slipping or moving against each other |
| landslide | when large pieces of land break off and slide down |
| hurricane | a powerful storm with very strong winds and a lot of rain |
