Volcanoes

What does a seismometer measure in relation to volcanoes/earthquakes?

• The changes in the shape of the volcano

• The movement of plates

• The seismic waves in the Earths crust

Large quantities of broken rock, ash, dust, pebbles, gas and lava are known as .....

• Lahar

• pyroclastic materials

Volcanoes are measured on an index. What is the name of the index?

• Volcano index

• Crater index

• Volcanic crater index

• volcanic explosive index

Select THREE answers. The VEI measures which of the following .....

• material ejected from the volcano

• the height of the explosion

• the height of the volcano

• the amount of damaged caused

What is the name of the area where volcanoes and earthquakes are most active

• The Pacific

• The pacific ring of fire

• European plate

In relation to Volcanoes, which of the following is a PRIMARY EFFECT of volcanoes.

• Tourism

• Pyroclastic flows

• Loss of life

Mount Fuji is an example of a composite/stratovolcano. These volcanoes have ......

• Tall, steep sided and alternative layers of ash and lava

• Gentle slopes, lava only

• large deep craters

The Mauna Lao (Hawaii) volcano is a shield volcano. This volcano has .....

• Steep sides consisting of lava and ash layers

• Gentle slopes and consists of lava flows

A cinder cone has a deep crater and explosive eruptions. An example of this is ....

• Mauna Loa

• Mount Fuji

• Mount St Helens

What is a Lahar?

• rocks from a volcano

• A flow that consists of water/snow with ash and rock

• A cloud formed above a volcano