Earthquakes happen along __________, called ______________, in the Earth's surface.

Earthquakes usually last less than __________________.

Earthquakes can be felt over large areas.

Earthquakes cannot be predicted.

Earthquakes cannot be prevented

Meteorologists can predict Earthquakes.

Scientists are working on learning how to predict earthquakes.

______________ are formed as melted rock rises through the Earth's crust and shoots or flows out of an opening.

Hot liquid rock under the Earth's surface is called _______________.

When pressure from gases within the molten rock becomes too great, an ____________ occurs.

Volcano eruptions can be mild or ________.

Volcano eruptions can be strong or _______________.

The melted rock below the Earth's surface is called __________ once it comes out of the volcano.

Because of their high heat, lava flows are great ___________ hazards.

Lava destroys everything in their path, but most move slowly enough that people can move out of the way.

Volcanoes can cause

A _______________ is one big wave or a series of giant waves that come on land.

Most tsunamis are caused by ______________ or ______________ happening beneath the ocean floor.

Tsunamis are almost impossible to predict.

As the big waves of a tsunami get close to the shore, they grow to be very tall and smash into the shore.

Tsunamis can cause a lot of damage.

_______________ happens during heavy rains, when rivers receive lots of extra water, when ocean waves come onshore, when the snow melts too fast, or when dams break.

Floods that happen very quickly are called flash floods.