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Carbon Cycle

Total questions: 17

Worksheet time: 9mins

Name
Class
Date
1.

Carbon is sometimes found stored underground in the form of fossil fuels. Which of the following are considered fossile fuels?

a)

Oil

b)

Water

c)

Coal

d)

Gas

2.

What carbon containing gas is produced when wood or fossil fuels are burned?

a)

Oxygen

b)

Nitrogen

c)

Chlorine

d)

Carbon Dioxide

3.

Which organims take this gas out of the air and make food from it?

a)

Animals

b)

Plants

c)

Fish

d)

Bacteria

4.

What is respiration?

a)

The process where water is made

b)

The release of water from food

c)

The process where food is made

d)

The release of energy from food

5.

Which of the following are consequences of global warming?

a)

More extreme weather conditions e.g. storms

b)

Rising sea levels

c)

Flooding

d)

Loss of habitats for plant and animals

e)

Extinction of plants and animals

6.

Which of the following best describes the term 'carbon footprint'?

a)

A measure of greenhouse gas emissions that are caused by the activities you do

b)

A measure of carbon dioxide in the atmosphere

c)

A measure of carbon dioxide plants absorb

d)

A measure of the activities you do day to day

7.
Which one of these does not add CO2 to the atmosphere?
a)
cooking with gas
b)
planting trees
c)
burning wood
d)
riding in a bus
8.
How do living organisms return carbon to the atmosphere in the carbon cycle?
a)
respiration and photosynthesis
b)
 decomposition and respiration
9.
All of the carbon in existence is continually recycled in the carbon cycle
a)
True
b)
False
10.
Everyone has a carbon footprint.
a)
true 
b)
false
11.
Why does too much carbon dioxide in the atmosphere cause climate change?
a)
It cools down our planet
b)
It blocks out UV rays
c)
It traps heat and warms up our planet
d)
It lets sunlight escape
12.

Which is NOT going to help reduce out carbon footprint?

a)

eating local food

b)

recycling

c)

going everywhere by car

d)

planting trees

13.

To reduce your carbon footprint, you should eat food that is....

a)

grown in other countries

b)

yummy

c)

grown locally

14.

Why should you be concerned with the size of your carbon footprint?

a)

Sometimes its hard to find shoes that are the right size.

b)

If we don't decrease greenhouse gas emissions Earth will continue to cool.

c)

Greenhouse gases are becoming scarce in Earth's atmosphere.

d)

Increases in greenhouse gases in the atmosphere are contributing to global climate change.

15.
We need the natural greenhouse effect for Earth to be habitable.
a)
True
b)
False
16.
The enhanced greenhouse effect leads to global warming.
a)
True
b)
False
17.
The following graph tells us what?
a)
Sea Levels are decreasing.
b)
Sea Levels are rising.