P6 Science · Chapter 11brightbit.net/worksheets
Water & Air Pollution
Name: ______________________Class: ________Date: ____________Score: ____ / 10
- 1.
Which of the following is a cause of water pollution?
(a) Planting trees near rivers(b) Dumping factory waste into rivers(c) Collecting rainwater in tanks(d) Building a dam
- 2.
Vehicle exhaust fumes are a major cause of —
(a) Water pollution(b) Soil erosion(c) Air pollution(d) Noise pollution only
- 3.
How does water pollution affect fish and other aquatic organisms?
(a) It helps them grow faster(b) It provides more food for them(c) It can poison them or reduce the oxygen in water, causing them to die(d) It has no effect on them
- 4.
Name one way to prevent air pollution.
Answer: ____________________________________
- 5.
Smoke from the open burning of rubbish causes air pollution because it releases —
(a) Only water vapour(b) Harmful gases and tiny particles into the air(c) Oxygen into the atmosphere(d) Clean air
- 6.
Which of the following can cause BOTH water and air pollution?
(a) Planting trees(b) A factory that burns fuel and discharges waste water(c) Recycling paper(d) Using solar panels
- 7.
Acid rain is caused by —
(a) Too much sunlight(b) Pollutant gases from factories and vehicles mixing with rainwater(c) Clouds absorbing sea water(d) Trees releasing too much oxygen
- 8.
A farmer uses large amounts of chemical pesticides on his crops. How might this affect a nearby river?
(a) The river becomes cleaner(b) Pesticides can wash into the river when it rains, poisoning aquatic life(c) The river dries up(d) Fish in the river will grow bigger
- 9.
Trees help reduce air pollution by —
(a) Producing carbon dioxide(b) Absorbing carbon dioxide and releasing oxygen during photosynthesis(c) Blocking all wind(d) Creating more dust in the air
- 10.
A student notices that a river near an industrial area has green, slimy water and a bad smell. The MOST LIKELY cause is —
(a) Too many fish in the river(b) Nutrient-rich waste from factories causing excessive algae growth(c) The river is naturally green(d) Rocks in the river changed colour
Answer key — P6 Science: Water & Air Pollution
For parents. Step-by-step explanations for every question are free on brightbit.net.
- 1.(b) Dumping factory waste into rivers
- 2.(c) Air pollution
- 3.(c) It can poison them or reduce the oxygen in water, causing them to die
- 4.use public transport
- 5.(b) Harmful gases and tiny particles into the air
- 6.(b) A factory that burns fuel and discharges waste water
- 7.(b) Pollutant gases from factories and vehicles mixing with rainwater
- 8.(b) Pesticides can wash into the river when it rains, poisoning aquatic life
- 9.(b) Absorbing carbon dioxide and releasing oxygen during photosynthesis
- 10.(b) Nutrient-rich waste from factories causing excessive algae growth
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