Science Test Vocab

Question 1

Ring of fire

Answer 1

One major belt of volcanoes.

Question 2

Lava

Answer 2

When magma reaches the surface.

Question 3

Island Arc

Answer 3

A string of islands formed by volcanoes.

Question 4

Magma Chamber

Answer 4

Pocket of magma under the surface.

Question 5

Vent

Answer 5

What molten rock and gases leave the volcano through.

Question 6

Lava Flow

Answer 6

The spread of lava as it pours out of a vent.

Question 7

Dormant

Answer 7

Volcano that is expected to become active again.

Question 8

Extinct

Answer 8

Volcano that is most likely never going to erupt again.

Question 9

Pipe

Answer 9

A long tube that extends from Earth’s crust up through the top of the volcano.

Question 10

Caldera

Answer 10

The hole left when a volcano collapses.

Question 11

Cinder Cone

Answer 11

A steep, cone-shaped hill or small mountain.

Question 12

Composite

Answer 12

Tall, cone-shaped mountains in which layers of lava alternate with layers of ash.

Question 13

Shield

Answer 13

A wide, gently sloping mountain.

Question 14

Batholith

Answer 14

A mass of rock formed when a large body of magma cools inside the crust.

Question 15

Dike

Answer 15

Magma that forces itself across rock layers and hardens.

Question 16

Sill

Answer 16

Magma that squeezes between horizontal rock layers and hardens.