Earthquake and Volcano Review

The amount of gas and silica in the magma determines ______

• how small a volcano is

• how long a volcano erupts

• how explosive a volcano is

• how big a volcano is

A volcano that has not erupted in awhile, but is likely to erupt again is

• active

• extinct

• dormant

A volcano that is not likely to erupt ever again is

• active

• extinct

• dormant

A volcano that is erupting or shows signs of eruption in the near future is

• active

• extinct

• dormant

Hot, fast moving lava is called ____ lava.

• Aa

• pahoehoe

Slow moving lava is called _____ lava.

• Aa

• pahoehoe

When a volcano erupts with an explosion that hurls out ash, cinders and bombs, it is called a(n)

• pahoehoe eruption

• quiet eruption

• pyroclastic flow

• Aa eruption

The instrument used to measure earthquake waves is called a

• seismograph

• anemometer

• psychrometer

• thermometer

Tags

NGSS.MS-ESS3-2

P-waves travel ______ than S-waves.

• at the same speed

• slower

• faster

Tags

NGSS.MS-PS4-1

The first wave to arrive a seismograph station is the

• P-wave

• S-wave

Tags

NGSS.MS-PS4-2