EQT Practice

Three seismographs stations recorded vibrations from the same earthquake. Which city was the earthquake nearest?

• Juneau

• Richmond

• Honolulu

• The earthquake was the same distance from all three cities because all of them recorded the earthquake.

P-waves arrive at a seismograph station first. The first P-wave arrived at Juneau between 10:09 A.M. and 10:10 A.M. Between what time intervals did the first P-wave arrive at Honolulu?

• 10:10 and 10:11

• 10:11 and 10:12

• 10:15 and 10:16

• 10:17 and 10:18

The times that each earthquake wave arrived at each city are different. Why?

• Honolulu is on an island, and S-waves do not travel quickly through water.

• The seismograph at one city is mechanical. The others are electronic.

• Each city is a different distance from the earthquake’s epicenter.

• One city sits on loose soil, and the other cities are on bedrock.

What best describes how P-Waves move?

• Push & pull and on the Earth's surface

• Push & pull and through the Earth

• Side to side & on the Earth's surface

• Side to side & through the Earth

What best describes how S-waves move?

• Push and pull & through the Earth

• Push and pull & on the Earth's surface

• Side to side & through the Earth

• Side to side & on the Earth's surface

What is the latitude and longitude of Earthquake A?

• 15° N, 45° W

• 15° N, 15° W

• 15° S, 45° W

• 15° S, 45° W

Which earthquake(s) occurred along the Ring of Fire?

• Earthquake A only

• Earthquakes A and B

• Earthquakes B and C

• Earthquake C only

What do the earthquake locations and dashed boundaries on the map tell us?

• The lithosphere is broken into pieces called plates.

• Earthquakes (and volcanoes) are not random occurrences; they often occur along plate boundaries.

• Plates spread, collide, and slide past one another along plate boundaries and are responsible for most earthquakes (and volcanoes).

• All of the above

Which statement best describes the difference between magma and lava?

• Magma is fluid and flows very quickly. Lava is thick and viscous and flows very slowly.

• Magma is molten rock beneath the earth’s surface. Lava is molten rock on the earth’s surface.

• Magma is molten rock on the earth’s surface. Lava is molten rock beneath the earth’s surface.

• Magma is molten rock. Lava is solid rock.

What causes hot ash clouds to rise high in the sky?

• The rotation of the earth

• The sun’s heat

• The earth’s magnetic field

• The upward force of the volcanic eruption, pressure release, density differences between ash and air, and convection