Earth Science Unit

The earth has 20 ______ that move toward, past, or against each other.

A _____ is a structure built across a river to control its flow.

A sudden movement of Earth's crust caused by a release of stress along faults describes what?

Volcanoes and Earthquakes are both ___________ because they can destroy and build up the earth.

Why are rocks and pebbles found in riverbeds usually smooth?

What instrument is used to record the motions of an earthquake?

The process by which material is added to a landform is called

Which state would an Earthquake most likely occur?

An opening in Earth's crust through which molten lava, ash, and gases are ejected is called a

Divergent boundaries slide ______ each other to create volcanoes.

______ boundaries push against each other and form mountains on the Earth's surface.

Major earthquakes are caused by

Which shows how earth's surface has been changed by fast moving water?

Where do deltas form?

Which statement describes a volcano erupting?

When volcanoes erupt, they overflow with

A _______ prevents flooding during heavy rainstorms and can often be seen on the streets.

A volcano is erupting. Heat is being released during the eruption. The source of heat is

Do earthquakes occur underwater?

How were the Hawaiian islands formed?