B14c How materials are recycled?

Question 1

The diagram shows the water cycle.

Name and describe the process labelled 1

Answer 1

Evaporation

Water changes from a liquid into water vapour

Question 2

The diagram shows the water cycle.

Name and describe the process labelled 3

Answer 2

Condensation

Water vapour changes into water droplets and forms clouds.

Question 3

The diagram shows the water cycle.

Name and describe the process labelled 4

Answer 3

Precipitation

Rain/snow/hail/ falls from the clouds

Question 4

The diagram shows the water cycle.

Name and describe the process labelled 6

Answer 4

Percolation

Water runs off the land and infiltrates the rocks

Question 5

The diagram shows the water cycle.

Name and describe the process labelled 2

Answer 5

Transpiration

Water vapour leaves the leaf through the stomata and enters the atmosphere

Question 6

The diagram shows the water cycle.

Name and describe the process labelled 5

Answer 6

Run off

Rain water flows into the rivers and streams to the sea

Question 7

The diagram shows the carbon cycle.

Name the process labelled A

Answer 7

Photosynthesis

Question 8

The diagram shows the carbon cycle.

Name the process labelled B

Answer 8

Respiration by plants

Question 9

The diagram shows the carbon cycle.

Name the process labelled C

Answer 9

Decomposition or decay

Question 10

The diagram shows the carbon cycle.

Name the process labelled D

Answer 10

Combustion

Question 11

The diagram shows the carbon cycle.

Name processes A and B

Answer 11

A = Respiration

B = Photosynthesis

Question 12

Describe how carbon dioxide is removed from the atmosphere

Answer 12

Used in photosynthesis

Diffuses into the leaf through the stomata

Carbon dioxide reacts with water to form glucose

Light provides the energy for the reaction

Question 13

Describe the role of microorganisms in returning carbon to the atmosphere from dead plants and animals

Answer 13

Dead plants and animals decomposed

By microorganisms

Microorganisms respire the carbon compounds in the dead material

Releases carbon dioxide into the atmosphere

Question 14

Describe the role of microorganisms in returning minerals from dead plants and animals to the soil

Answer 14

Dead plants and animals decomposed

By microorganisms

Microorganisms release the minerals from the dead material

Releases minerals into the soil

Minerals absorbed by plants