Earthquakes - Chapter 1.5

Question 1

Earthquakes rarely last longer than one minute. Smaller tremors, called ___, may occur in the hours or days following an earthquake.

Answer 1

aftershocks

Question 2

Aftershocks are small tremors after an earthquake. It makes more damage to buildings than an earthquake. Why is this?

Answer 2

Aftershocks make more damage, because the buildings are already weakened.

Question 3

Tremors from an earthquake can be detected and measured by a ___ or ___.

Answer 3

seisometer, seismograph

Question 4

The ___ is used to describe the strength or force of an earthquake

Answer 4

richtor scale

Question 5

While more than ___ earthquakes occur each year, only about ___ are strong enough to cause damage

Answer 5

500,000 , 50

Question 6

The ___ is the point deep in the Earth’s crust where the earthquake begins.

Answer 6

focus

Question 7

The ___ is the point on the the surface directly above the focus. It is the pplace where tremors are strongest.

Answer 7

epicentre

Question 8

The tremors spread out from the ___

Answer 8

focus

Question 9

The ___ move along the fault line.

Answer 9

plates