Earthquakes and Volcanoes Practice

For the moment magnitude scale, each increase on the scale represents 31.5 times more energy released by the earthquake. Which is a good estimate of about how much more motion is there for a magnitude 7 earthquake than a magnitude 4 earthquake?

• 90 times

• 27,000 times

• 900 times

• 3000 times

Tags

NGSS.MS-PS3-5

Silica-rich magma ____.

• sometimes forms where Earth's plates are coming together and one plate is forced under another

• produces explosive eruptions

• is thick and gas gets trapped, causing pressure to build up

• all of the above

Indicate whether the statement is true or false. 2. There is no relationship between plate tectonics and volcanoes.

• True

• False

Tags

NGSS.HS-ESS1-5

NGSS.HS-ESS2-1

In a strike-slip fault, two blocks of rock slide horizontally past each other. _______________

Indicate whether the statement is true or false. 3. Cinder cone volcanoes produce quiet eruptions.

• True

• False

Basaltic magma produces nonexplosive eruptions such as those at ____.

• Mount St. Helens

• Mount Pinatubo

• Kilauea

• Mount Unzen

In what way do volcanic eruptions affect the climate?

• They cause a global temperature increase.

• They cause a global temperature decrease.

• They cause a global precipitation increase.

• They cause a global precipitation decrease.

Tags

NGSS.HS-ESS2-2

NGSS.HS-ESS2-4

NGSS.HS-ESS3-5

Stratovolcanoes can be described as...

• Very large with gentle slopes and eruptions of low viscosity magma

• Large with steep slopes and violent eruptions of very viscous magma

• Small and clustered in groups with steep slopes and firey eruptions that occur only once

An instrument that records vibrations in the ground and determines the location and strength of an earthquake.

• seismograph

• seismogram

• seismic wave

• vibrato

Tags

NGSS.MS-ESS3-2

The point on Earth's surface directly above an earth quake's starting point, or focus

• focus

• epicenter

• fault

• earthquake

Tags

NGSS.MS-ESS3-2