Earth and Atmosphere

Question 1

What are the three main layers of Earth?

Answer 1

What are the three main layers of Earth? Crust, mantle, core

Question 2

Which layer of Earth is made of solid rock?

Answer 2

Crust

Question 3

Which layer of Earth flows very slowly?

Answer 3

Mantle

Question 4

Which layer of earth is solid metal?

Answer 4

Core

Question 5

Why can the crust move

Answer 5

It has tectonic plates, which are moved by the mantle

Question 6

What are the three types of rock?

Answer 6

What are the three types of rock? Sedimentary, igneous, metamorphic

Question 7

How do sedimentary rocks form?

Answer 7

Smaller bits of other rocks get stuck together

Question 8

What are the properties of sedimentary rock?

Answer 8

Crumbly, they form in layers.

Question 9

How do igneous rocks form?

Answer 9

When molten rock cools and solidifies.

Question 10

How do metamorphic rocks form?

Answer 10

When rocks are heated or compressed in the earths crust.

Question 11

In what kind of rocks are fossils found?

Answer 11

Sedimentary rock

Question 12

What is porous rock?

Answer 12

A rock which absorbs water

Question 13

What are the two main gases in Earths atmosphere?

Answer 13

Oxygen and nitrogen

Question 14

What approximate% of Earth’s atmosphere is nitrogen?

Answer 14

78%

Question 15

What approximate % of Earth’s atmosphere is oxygen?

Answer 15

21%

Question 16

Name two gases other than oxygen and nitrogen that are in Earth’s atmosphere

Answer 16

Carbon dioxide, water vapour

Question 17

How is carbon dioxide removed from the atmosphere?

Answer 17

Photosynthesis

Question 18

In what three ways is carbon dioxide added to the atmosphere?

Answer 18

Respiration, combustion of fossil fuels, decomposition

Question 19

Why is adding more carbon dioxide to the atmosphere a problem?

Answer 19

It causes global warming (which causes climate change)

Question 20

How has the amount of carbon dioxide in the atmosphere changed over the last 200 years?

Answer 20

Increased rapidly

Question 21

Why has the amount of carbon dioxide in the atmosphere increased rapidly over the last 200 years?

Answer 21

Humans began burning fossil fuels

Question 22

What is the order of earths layers from top to bottom?

Answer 22

1-Crust
2-Mantle
3-Core

Question 23

Which plant cell’s do not contain chlorophyl

Answer 23

Root hair cells

Question 24

What type of organisms carry out decay?

Answer 24

Decomposers

Question 25

Give two examples of decomposers.

Answer 25

Bacteria, Fungi