Volcanic Hot Spots

Volcano Review

8th grade

What is a volcano?

• a weak spot in the crust where molten material, magma, erupts to the surface.

Where do volcanoes form?

• At convergent boundaries

• At subduction zones

• At divergent boundaries

• At hot spots

Parts of a Volcano

• magma chamber

• pipe

• vent

• lava flow

• crater

Volcanic Activity

• Active volcanoes are erupting or show signs of eruption in the near future

• Dormant volcanoes are not currently active but may be in the future

• Extinct volcano is unlikely to erupt again

Types of Volcanoes

• Shield- a wide, flat dome

• Cinder Cone- steep, cone shaped hill

• Composite-sometimes called a stratovolcano, it is a combination of the other two

• Caldera- huge hole left by a collapse of a volcano. It collapses inward.

Multiple Choice

Volcanoes can be found...

• on land
• under water
• on islands
• all of the above

Multiple Choice

Once magma reaches the earth's surface it is called.....

• Silica

• Rock

• lava

Multiple Choice

This volcano is most likely which type of volcano?

• Felsic
• Composite
• Shield
• Cinder cone

Multiple Choice

A line of volcanic activity that surrounds the Pacific Ocean basin is the

• Ring of Fire

• Aleutian Islands

• Hawaiian Islands

• Caribbean Islands

Multiple Choice

This image is of...

• Transform Boundary
• Convergent Boundary
• Divergent Boundary

Multiple Choice

Volcanoes can form along diverging plate boundaries on land.

• true
• false

Multiple Choice

This is the general term for ash and rock that erupts from a volcano.

• lava

• magma

• pyroclastic material

• blocks

Multiple Choice

Hawaiian Islands (and other islands on Earth) were formed by

• convergent boundary

• hot spot

• divergent boundary

• transform boundary

Multiple Choice

Shield volcanoes usually produce _________ eruptions.

• non-explosive

• explosive

• ash and debris

• constant

Multiple Select

Most volcanoes form at

• hotspots

• subduction zones

• convergent boundaries

• divergent boundaries

Multiple Choice

Volcanoes can have impacts on the following:

• environment

• economic

• social

• all of the above

Multiple Choice

How do volcanic gases affect the atmosphere?

• They don't

• They are good for the atmosphere

• Volcanic gases can be poisonous which is bad for humans

Multiple Choice

What is the name of a person who studies volcanoes?

• a seismologist

• a geologist

• a tectonist

• a volcanologist

Multiple Choice

A volcano that is expected to never erupt again is called...

• dormant

• exhausted

• doppler

• extinct

Multiple Choice

What do we call molten hot liquid rock while it is still below Earth's surface?

• magma

• cindera

• igneous

• lava

Multiple Choice

Dormant volcanoes might erupt in the future.

• True
• False

Multiple Choice

Blobs of lava erupt with ash and cinders.

• Shield

• Cinder Cone

• Composite

Multiple Choice

Violent eruptions with lava and ash.

• Sheild

• Cinder Cone

• Composite

Multiple Choice

Slow moving lava and not explosive.

• Shield

• Composite

• Cinder Cone

Multiple Choice

Created by hot spots with gradual slopes.

• Shield

• Cinder Cone

• Composite

Multiple Choice

Short lived with small steep sides.

• Shield

• Composite

• Cinder Cone

Multiple Choice

Made up of alternating layers of ash and lava with symmetrical sides.

• Shield

• Composite

• Cinder Cone

Multiple Choice

Where does the lava erupt from a volcano?

• Conduit

• Crater

• Magma Chamber

• Volcanic Ash

Multiple Select

What are the three main types of volcanoes?

• Composer

• Shield

• Cinder Cone

• Composite

• Shade

Multiple Choice

Where are volcanoes most likely to form?

• In the middle of continents

• Along plate boundaries

• In mountains

• away from earthquakes

Multiple Choice

What is pyroclastic material?

• Dust, ash and other material that comes out of a volcano.
• A type of magma that is in a volcano.
• A type of volcano.

Multiple Choice

An example of islands that formed over a hotspot are the

• Aleutian Islands

• Hawaiian Islands

Multiple Choice

A huge hole that is left behind when a volcano collapses is called a

• Batholith

• Caldera

• Geyser