Our Land Changes

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