Geology: Plate Tectonics and Boundaries

Question 1

Which of the following is NOT a factor causing volcanic eruption?

Accepted Answer

decrease in water in the asthenosphere (subduction zone)

Question 2

An example of hot spot volcanoes is:

Accepted Answer

Hawaii

Question 3

Which of the following is NOT a reason that Wegener believed the Earth's continents move?

Accepted Answer

Convection currents are not strong enough to move plates.

Question 4

When the center of a volcanic mountain fills with water forming a lake, it is called:

Accepted Answer

caldera

Question 5

Which type of boundaries more commonly have subduction zones?

Accepted Answer

convergent

Question 6

The most common type of volcano is:

Accepted Answer

composite

Question 7

In a subduction zone, which denser material is pushed lower and melted?

Accepted Answer

oceanic crust

Question 8

Which type of boundary shows a decrease in pressure as plates pull apart

Accepted Answer

divergent

Question 9

Heated material is less dense and rises. Rising material cools, becomes more dense, and sinks:

Accepted Answer

convection currents

Question 10

When a continental and oceanic plate converge, a volcano is formed:

Accepted Answer

on land

Question 11

This type of volcano usually erupts explosively because its magma is thick:

Accepted Answer

cinder cone

Question 12

Which two elements make up the majority of the crust?

Accepted Answer

oxygen, silicon

Question 13

In which layer of the earth are convection currents found?

Accepted Answer

mantle

Question 14

Which of the four layers of the Earth is said to have a peanut butter-like consistency?

Accepted Answer

mantle

Question 15

When volcanoes occur at places that are NOT boundaries, they are called:

Accepted Answer

hot spots

Question 16

When two oceanic plates converge, a volcano is formed:

Accepted Answer

as an island

Question 17

Which of the following sections is broken into plates that are moved by convection currents?

Accepted Answer

lithosphere

Question 18

This type of volcano usually formms in long cracks where plates are pulled apart:

Accepted Answer

fissure

Question 19

Name the scientist responsible for the idea of "Continental Drift".

Accepted Answer

Wegener

Question 20

Fissure volcanoes are usually found at:

Accepted Answer

divergent boundaries

Question 21

The increased amount of water in the asthenosphere results in:

Accepted Answer

lowering the melting temperature of magma

Question 22

This tectonic boundary is responsible for creating the Mid-Atlantic Ridge or the Rift Valley:

Accepted Answer

divergent

Question 23

What increases the amount of water in the asthenosphere at a convergent boundary?

Accepted Answer

subduction

Question 24

This type of volcano usually has less explosive eruption due to "runny" lava:

Accepted Answer

shield

Question 25

The lithosphere floats on this part of the mantle:

Accepted Answer

asthenosphere

Geology: Plate Tectonics and Boundaries

Questions 25

Geology: Plate Tectonics and Boundaries

Questions 25