Fast changes to earth

What damage could a landslide cause?

• It could shake the earth, breaking buildings

• It could cover the land with mud and rock

• It could cause an explosion of rock and material

• It could smash everything around it

How is an earthquake caused?

• One plate of the earth sliding under another

• Two plates of the earth rubbing together

• Two plates pushing together to get the magma out

• One plate exploding in the middle

Volcanoes change the land by...

• breaking the land

• taking away the land

• adding more land

• flooding the land

Why are fast land changes so dangerous?

• because they are hard to predict

• because they are hard to get away from

• because they happen quickly

• all of the above

When a volcano explodes ...

• ash, rock, and lava go everywhere quickly

• the lava rolls out slowing from the top

• the magma builds up but then goes back into the earth

• a landslide is caused.

Volcanoes create new land on the Earth’s surface when –

• lava flows then cools and hardens to form rock.

• an eruption destroys the side of a mountain.

• magma forms giant underground chambers.

• saltwater touches lava and changes into steam.

Volcanoes create new land on the Earth’s surface when –

• lava flows then cools and hardens to form rock.

• an eruption destroys the side of a mountain.

• magma forms giant underground chambers.

• saltwater touches lava and changes into steam.

A landslide is most likely to be caused by –

• strong winds

• breaking rocks

• heavy rains

• cold weather

The picture shows an island in the middle of the ocean that increased in size in only a few weeks.

Which of the following most likely caused this rapid change in the island?

• Earthquake shaking the water

• Movement of waves

• Eruptions of a volcano

• Piling up of sand

Rocks, loose soil and sand rapidly sliding down a slope are a change to the surface of the earth known as a -

• landslide

• volcano

• earthquake

• tsunami