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A volcano can trigger:

• tsunamis, avalanches and cyclones.

• global warming

• tsunamis, flash floods, earthquakes, mud flows and rock falls.

What is the magma of a volcano?

• Molten rock beneath Earth's surface.

• An underground passage magma travels through.

• Mouth of a volcano - surrounds a volcanic vent.

What is lava of a volcano?

• An opening in Earth's surface through which volcanic materials escape.

• Molten rock beneath Earth's surface.

• Molten rock that erupts from a volcano that solidifies as it cools.

What is the crater of a volcano?

• A small cone-shaped volcano formed by an accumulation of volcanic debris.

• Fragments of lava or rock smaller than 2 mm in size that are blasted into the air by volcanic explosions.

• Mouth of a volcano - surrounds a volcanic vent.

What can cause a tsunami?

• earthquake
• underwater volcanoes
• landslides
• all of these

Which statement is accurate regarding tsunamis in the open ocean?

• The wave is very high, compared to the surrounding water.

• The water is lifted, but barely noticeable in deep water.

All of the following are factors that affect tsunami intensity except

• Magnitude of earthquake causing tsunami

• Distance from earthquake to land

• Shape of coast line

• Time of day when earthquake occurs

Coastal Vegetation, such as beach forest, can help slow tsunami waves.

• True

• False

How does the image relate to tsunamis? (may be more than one)

• It measures the wave height

• It is part of the tsunami warning system

• It is a seismograph

• It is a life raft

On average, about how many tsunamis occur annually?

• 1 or 2

• 10

• more than 20

• it varies each year