The Earth

Question 1

What is recycling?

Answer 1

Collecting and processing materials that have been used so that the materials can be used again

Question 2

Name two processes that add carbon dioxide to the atmosphere

Answer 2

Respiration, combustion of fossil fuels

Question 3

Name two processes that remove carbon dioxide from the atmosphere

Answer 3

Photosynthesis and dissolving into oceans

Question 4

Basalt is an example of an…

Answer 4

Igneous rock

Question 5

What does the rock cycle show?

Answer 5

How rocks change, and how their materials are recycled over millions of years

Question 6

State some examples of sedimentary rocks

Answer 6

Sandstone and limestone

Question 7

What is uplift?

Answer 7

The earths crust moves constantly. When continents collide, huge forces inside the earth push rocks upwards, and mountains can form. This is uplift.

Question 8

Give two examples of metamorphic rocks

Answer 8

Marble and slate

Question 9

Humans have a huge impact on climate change due to…

Answer 9

Deforestation, agriculture and burning fossil fuels for electricity

Question 10

State the 4 most common substances in the earths atmosphere

Answer 10

Argon, carbon dioxide, oxygen and nitrogen

Question 11

Name the 3 types of weathering

Answer 11

Physical, chemical and biological

Question 12

State the 4 layers of the earth

Answer 12

Crust, mantle, outer core, inner core

Question 13

Extra carbon dioxide in the atmosphere has caused an increase in the average global temperature, this is called…

Answer 13

Global warming

Question 14

Metamorphic rocks are formed when…

Answer 14

Heat, high pressure, or both change an existing rock

Question 15

What is the carbon cycle?

Answer 15

It shows how carbon dioxide enters and leaves the atmosphere

Question 16

State some example of carbon stores

Answer 16

Atmosphere, oceans, sedimentary rocks, fossil fuels, plants and animals, soils

Question 17

List the main steps involved in how sedimentary rocks are formed

Answer 17

Weathering, erosion, transport, deposition, compaction and cementation

Question 18

When igneous rocks form, how can the rate at which the magma cools affect crystal size?

Answer 18

The slower it cools, the larger the crystals are and the quicker, the smaller

Question 19

What is the greenhouse affect?

Answer 19

Carbon dioxide in the atmosphere absorbs some of the radiation produced by the earth so it does not go back into space. This keeps the earth warmer than it would be if the radiation were to go back into space. This is the greenhouse effect. Carbon dioxide is a greenhouse gas.

Question 20

Write the word equation for respiration?

Answer 20

Carbon dioxide + water —> glucose + oxygen