Unit 4 - Restless Planet - Volcanos

Question 1

Complete the paragraph describing a volcano; A volcano is where ____a___ rock or ____b_____ shoots out, or _____c__, through the ground. When it is ____d____ ground, the liquid rock is called ___e_____.

Answer 1

a = liquid
b = magma
c = erupts
d = above
e = lava

Question 2

What is lava?

Answer 2

Liquid rock above ground.

Question 3

What is a volcano?

Answer 3

Where liquid rock or magma shoots out, or erupts, through the ground.

Question 4

What is volcanic gas?

Answer 4

Mainly steam and carbon dioxide, plus some sulphur dioxide and other gases. It smells of rotten eggs. It can suffocate you.

Question 5

What is an igneous rock?

Answer 5

Lava that has been cooled and then hardened.

Question 6

What is the most common igneous rock?

Answer 6

Basalt.

Question 7

What is a pumice?

Answer 7

Gassy lava that explodes and forms a light porous rock.

Question 8

What can volcanic gas do?

Answer 8

Cause acid rain and kills trees and plants over a wide area.

Question 10

What are the primary impacts of volcanos?

Answer 10

Pyroclastic Flow
Mudflows
Lava
Ash

Question 11

What are the secondary impacts of volcanoes?

Answer 11

Crops are destroyed.
Acid rain kill trees and plants.
Temperature around the world will fall.