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15
×
Which place is likely to have the most air pollution?
Busy road
Forest
Park
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lifesaver
Give 15 points!
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fairy
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5
10
15
20
25
×
fairy
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5
10
15
20
25
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thief
Give points!
5
10
15
20
25
15
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When measuring air pollution, what is the dependent variable?
Type of place
Time of day
Amount of pollution
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lifesaver
Give 25 points!
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gold
Win 50 points!
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rocket
Go to first place!
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banana
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15
×
What happens to air quality when pollution increases?
It stays the same
It becomes worse
It becomes cleaner
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15
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What happens when we breathe out?
Carbon dioxide leaves the body
Nitrogen is used by lungs
Oxygen enters the body
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seesaw
Swap points!
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magnet
Take 25 points!
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rocket
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thief
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10
15
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25
15
×
Smoke from burning rubbish is an example of what?
Air pollution
Clean air
Water vapour
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baam
Lose 10 points!
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fairy
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5
10
15
20
25
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rocket
Go to first place!
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baam
Lose 20 points!
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15
×
Which tool can be used to observe air pollution levels?
Air quality sensor
Thermometer
Rain gauge
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15
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Why is breathing polluted air harmful?
It can damage lungs
It helps lungs work better
It makes air heavier
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15
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Why is nitrogen the most common gas in the air?
It does not react easily
Plants make it
It is heavy
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15
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Which of these is a source of air pollution?
Fresh air
Wind
Cigarette smoke
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15
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Which variable should be kept the same (controlled) in an air pollution investigation?
Distance from road
Type of measuring tool
Number of cars
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15
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Why is air important to living things?
It is heavy
It is colourful
It contains gases needed for life
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15
×
Which gas do humans need to breathe in to stay alive?
Nitrogen
Oxygen
Carbon dioxide
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