A valley is a lowland between mountains or hills.

A ______ is a deep valley with steep sides.

A ______ is a piece of land surrounded by water all but one side.

A plain is a large area of flat or gently sloping land.

A _____ is a very high hill.

An _____ is a land surrounded completely by water.

A large area of a sea or ocean is partially enclosed by land.

A large area of flat grasslands is a prairie.

A ______ is a natural elevation smaller than a mountain.

A _____ is a large stream of water that flows into a larger body of water.

A basin is a high region surrounded by higher land.

A volcano is an opening in the Earth's crust that spills ____, ____, and _____.

A river is a long, narrow body of water.

A lake is _________________.

An area of flat land that is higher than the surrounding land.

A bay is an inlet of a large body of water that extends into the land.

A type of habitat with mostly grasses, but also flowering plants and occasional shrubs or isolated trees.