Lesson 10- Mass Wasting, Tsunami and Flooding

The downhill movement of earth material caused by gravity is known as _________.

• slipdown

• earthflow

• mass wasting

• rock falldown

What kind of slope will generally produce the fastest, most dangerous mass wasting event?

• steep and wet

• shallow and dry

• shallow and rocky

• steep and tree-filled

Which of the following is NOT a type of mass wasting event?

• creep

• earthflow

• waterflow

• rock fall

Chances of mass wasting are affected by which of the following factors?

• rate of weathering

• type of earth material

• steepness of the slope

• All of the above.

To mitigate the losses from mass wasting, engineers can __________ steep slopes.

• stabilize

• destabilize

• destroy

• create

A series of ocean waves caused by the sudden vertical movement of a large amount of ocean water is called a(n) ___________.

• over wave

• big wave

• extra wave

• tsunami

Tsunamis form because of a sudden event __________, like earthquakes, volcanic eruptions, underwater landslides, and asteroid impacts.

• on the seafloor

• near the coastline

• on a divergent boundary

• on an island or coral reef

What are the most common cause of tsunamis?

• earthquakes

• asteroid impacts

• volcanic eruptions

• underwater landslides

In deep water, tsunamis start off as ___________ waves that travel __________.

• small; very quickly

• large; slowly

• huge; quickly

• tiny; very slowly

Most tsunamis take place around ___________ because of all the volcanic and earthquake activity

• coastal North America

• the Indian Ocean

• coastal Australia

• the Pacific Ring of Fire