Bill Nye: Earthquakes

Earthquakes occur only once or twice a year.

• True

• False

The Earth's surface is very rigid.

• True

• False

Earth's surface floats on molten rock.

• True

• False

Tectonic plates are very small.

• True

• False

Oceans float on tectonic plates.

• True

• False

Volcanoes and mountains are formed when tectonic plates are moving apart.

• True

• False

In most earthquakes, faults are vertical.

• True

• False

Which of the following describes the direction in which the Earth's plates can move?

• They can move to the right.

• They can move to the left.

• They can move up and down.

• All of the above.

Which of the following conditions is involved in producing earthquakes?

• Plate movement forms faults.

• Faults store energy.

• Plates release energy as they slide against each other

• All of the above.

If Earthquake X measured 1 and Earthquake Y measured 3 onthe Richter scale,then...

• Earthquake Y had 3 times the ground motion of Earthquake X.

• Earthquake Y had 10 times the ground motion of Earthquake X.

• Earthquake Y had 100 times the ground motion of Earthquake X.

• None of the above.