Texas Science Unit 6: Lesson 2 Rapid Changes on Earth

Front

What is lava?

Back

Melted rock that is hot and hardens as it cools.

Front

Why does heavy rain make a landslide more likely?

Back

It makes the soil heavier and more likely to move downhill.

Front

Which events cause rapid changes to Earth’s surface?

Back

Volcanoes, earthquakes, and landslides.

Front

What causes an earthquake?

Back

Rocks beneath Earth's surface moving in different directions.

Front

What can trigger a landslide?

Back

Heavy rain or an earthquake.

Front

What is a landslide?

Back

A sudden movement of rock and soil down a slope.

Front

What is an earthquake?

Back

A shaking of the ground caused by the movement of rocks beneath the Earth's surface.

Front

What is a volcano?

Back

An opening in the Earth's surface where lava, ash, and gases can escape.

Front

How does heavy rain affect soil?

Back

It can make the soil heavier and more saturated, increasing the risk of landslides.

Front

What is erosion?

Back

The process by which soil and rock are removed from the Earth's surface by wind or water.