Fast and Slow Land Changes

Which of the following describes a landslide?

• A tropical cyclone with wind speeds reaching over 150 kilometers an hour.

• An opening in the earth's crust that allows magma to reach the surface.

• The rapid downward movement of large amounts of rocks, soil or mud.

• A violent shaking of the ground caused by movements in the Earth's crust.

Which of the following does NOT normally happen after a landslide?

• Loss of plant and animal life

• Flooding

• Violent storms

• Destruction of land

Which wouldn't be another name for a landslide?

• mudslide

• waterslide

• avalanche

• rockfall

How might you know that a landslide is starting?

• New cracks in the sidewalk

• Doors or windows jam or stick

• Sounds of trees cracking or large rocks hitting together

• All of the above

Volcanoes often cause landslides. Why do you think that is?

• The lava melts the other rocks

• Natural disasters always happen in twos

• The landslide is what caused the volcano to erupt

• The sides of volcanoes can be steep, and when it erupts the sides are weakened and can collapse.

Which describes a Tsunami?

• A violent rotating storm with high wind speeds

• an overflow of water from a river, lake or stream.

• A large ocean wave that can strike the land.

• A rotating column of air that moves over land.

Which of these CAN'T cause a tsunami?

• Volcanic eruption

• earthquake

• landslide

• hurricane

How might you be warned that a tsunami might be coming?

• Strong winds and violent thunderstorms

• Ocean water recedes, exposing the ocean life

• shaking of the earth and cracks in the ground.

• a dark greenish sky and hail

What is a flood?

• When large amounts of rocks move downhill quickly

• A violent shaking of the earth's crust

• overflow of water from lakes, rivers, and the ocean, usually because of heavy rains

• the rupture of the earth's crust, usually near fault lines.

Which of these events does NOT cause a rapid change to Earth's surface?

• Landslides

• Earthquakes

• Volcanoes

• Weathering and erosion