Volcanoes

Question 1

Name all 9 features of a volcano.

Answer 1

Vent
Lava
Crater
Sill
Summit
Ash
Throat
Conduit

Question 2

Describe the ash cloud.

Answer 2

A

Question 3

Describe the vent of a volcano.

Answer 3

The opening in the volcano from where lava comes out.

Question 4

Describe the lava of a volcano.

Answer 4

Molten rock which erupts from a volcano.

Question 5

Describe the crater of a volcano.

Answer 5

The mouth of a volcano that surrounds the vent.

Question 6

Describe the sill of a volcano.

Answer 6

A flat piece of rock which forms by hardening of magma in a crack in a volcano.

Question 7

Describe the summit of a volcano.

Answer 7

The highest point.

Question 8

Describe the ash of a volcano.

Answer 8

Small parts of lava or rock which are shot in the air by explosion.

Question 9

Describe the throat of a volcano.

Answer 9

Conduit’s part that ejects lava and volcanic ash.

Question 10

Describe the conduit of a volcano.

Answer 10

The passage in the volcano through which magma travels up.

Question 11

Explain the difference between magma and lava.

Answer 11

Lava is molten rock that has reached the surface through volcanic vents whereas magma is molten rock stored under the surface.

Question 12

Describe the process of volcanic eruptions.

Answer 12

Magma rises through the cracks or weaknesses in the Earth’s crust and pressure builds up inside the Earth. When the pressure is released magma explodes to the surface in an eruption. The lava cools and forms new rock.

Question 13

Describe the different words for the activity of volcanoes and what they mean.

Answer 13

Active volcanoes are erupting or have erupted recently.
Extinct volcanoes have not erupted for thousands of years.
Dormant volcanoes have not erupted for over 20 years.

Question 14

Name the 6 types of volcanoes.

Answer 14

Fissure
Shield
Dome
Ash-cinder
Composite
Caldera