A natural land shape or feature.
All the kinds of landforms in a certain place.
A large, thick sheet of ice.
A hill of sand, made and shaped by wind.
An area of new land at the mouth of a river, formed from sediments carried by the river.
A large hole formed when the roof of a cave collapses.
A section of Earth's crust and mantle that fits together with other sections like puzzle pieces.
A movement of the ground, caused by a sudden release of energy in Earth's crust.
The point on Earth's surface directly above the focus of an earthquake.
A break in Earth's crust.
Molten rock beneath Earth's surface.
Molten rock that reaches Earth's surface.
A mountain made of lava, ash, or other materials from eruptions that occur at an opening in Earth's crust.