Volcano Review

Question 1

T or F: Hazards of volcanoes are fires, buried objects, deadly gases, ash, cinders, mudslides

Accepted Answer

True

Question 2

T or F: A geyser is a fountain of water and steam, heated by magma, that erupts from the ground

Accepted Answer

True

Question 3

T or F: the Hawaiian Islands formed over a volcanic hot spot.

Accepted Answer

True

Question 4

T or F: The molten material before it reaches the earth's surface is called magma.

Accepted Answer

True

Question 5

Magma that forces across rock layers hardens into a

Accepted Answer

dike

Question 6

T or F: Earthquakes occurring near a volcano may alert scientists an eruption may happen soon.

Accepted Answer

True

Question 7

T or F: the vent is where the lava comes out of the volcano.

Accepted Answer

True

Question 8

T or F: A hazard from a quiet volcano is pyroclastic flow.

Accepted Answer

False

Question 9

T or F: The build up of many thin runny layers of lava result in a composite volcano.

Accepted Answer

False

Question 10

When magma hardens in a volcano's pipe the resulting land form is called ____________

Accepted Answer

volcanic neck

Question 11

Which of the following determines how easily lava will flow?

Accepted Answer

The amount of silica in the magma

Question 12

T or F: Volcanic belts form along North American Mountain ranges.

Accepted Answer

False

Question 13

T or F: A volcano high is silica will erupt quietly.

Accepted Answer

False

Question 14

Soils from volcanoes are some of the richest in the world due to

Accepted Answer

All of the above

Question 15

T or F: When a volcanic mountain top collapses a caldera is formed.

Accepted Answer

True

Question 16

T or F: A dormant volcano may erupt again in the future.

Accepted Answer

False

Question 17

T or F: The main ingredient of magma is dissolved gases.

Accepted Answer

False

Question 18

T or F: A cinder cone volcano results from a volcano with high viscosity lava.

Accepted Answer

True

Question 19

T or F: Silica in the magma forces the magma to erupt to the surface.

Accepted Answer

False

Question 20

T or F: Pumice is a rock formed as a result of trapped gases in quickly cooling lava.

Accepted Answer

True

Questions 20