Year 8 climate change test

Question 1

What is the carbon cycle?

Answer 1

The carbon cycle is the movement of carbon through the air, plants, animals, soil, and oceans, helping maintain life on Earth

Question 2

Is this a negative or positive feedback loop?

Answer 2

negative

Question 3

Is this a negative or positive feedback loop?

Answer 3

positive

Question 4

What is the greenhouse effect?

Answer 4

The enhanced greenhouse effect is when human activities, like burning fossil fuels and cutting down trees, add extra greenhouse gases to the air, trapping more heat from the sun and making the Earth warmer

Question 5

What is matter?

Answer 5

Any substance that takes up space by having volume

Question 6

What is an input?

Answer 6

Something that enters the system from outside of it

Question 7

Economic impacts of climate change

Answer 7

Damage to property, disruption to supply chains, and changes to trade patterns

Question 8

Social impacts of climate change

Answer 8

People lose their homes, people in poverty have an increased chance of death, malaria and heat-caused diseases spread.

Question 9

List factors that cause mass extinction

Answer 9

Illegal wildlife trade, pollution, overfishing, population and consumption, and destruction of natural habitats.

Question 10

How can we mitigate climate change?

Answer 10

1) Reduce greenhouse gas emissions to the atmosphere from the carbon sources, e.g burning less fossil fuels.

2) Increase the removal of greenhouse gases in the atmosphere by the carbon sinks e.g plants, trees, oceans.

Question 11

What is an output?

Answer 11

Something that leaves the system

Question 12

Name 2 processes which move carbon in the carbon cycle

Answer 12

Respiration and decay

Question 13

Name 2 main stores of carbon

Answer 13

Atmosphere and ocean

Question 14

What is respiration?

Answer 14

Living plants, animals and humans release carbon dioxide as they breathe

Question 15

What is photosynthesis?

Answer 15

During daylight plants take in carbon dioxide and water. They make glucose (food) to allow them to grow

Question 16

What is decay?

Answer 16

The breakdown of dead plants and animals by bacteria in the soil

Question 17

Which stores does the process of photosynthesis connect?

Answer 17

The atmosphere and organic matter

Question 18

Which processes add carbon dioxide or methane to the atmosphere?

Answer 18

Respiration and volcanic eruptions

Question 19

What are the potential impacts of global warming of +1.5⁰C?

Answer 19

Sea levels will rise 20cm

Question 20

What are the potential impacts of global warming of +2⁰C?

Answer 20

10 million more people will lose their homes due to sea level rise

Question 21

What type of tawny owl is flourishing today?

Answer 21

Brown tawny owl

Question 22

What does mitigation mean?

Answer 22

Mitigation means taking actions to reduce or prevent something bad from happening, like planting trees and using clean energy to slow down climate change

Question 23

Name two reasons why changing our diet is useful for managing climate change.

Answer 23

Cattle emit significant quantities of methane and 55% of the UK cropping land is used to grow food for livestock, rather than food for humans