P6 Science · Chapter 9brightbit.net/worksheets
Man's Impact on the Environment
Name: ______________________Class: ________Date: ____________Score: ____ / 10
- 1.
Deforestation means —
(a) Planting more trees in a forest(b) Cutting down large areas of forest(c) Watering trees in a dry area(d) Protecting forest animals
- 2.
Which of the following is an effect of deforestation on animals?
(a) Animals get more food(b) Animals lose their habitats(c) Animals grow bigger(d) Animals become friendlier to humans
- 3.
Urbanisation is the process of —
(a) Planting trees in cities(b) Building cities and towns on natural land(c) Moving from cities to rural areas(d) Cleaning up rivers in towns
- 4.
Burning fossil fuels in factories and vehicles releases harmful gases into the air, causing —
(a) Water pollution only(b) Air pollution(c) Soil to become more fertile(d) More trees to grow
- 5.
When fertilisers from farms wash into rivers, they can cause —
(a) Fish to grow bigger and healthier(b) Excessive algae growth that uses up oxygen, killing aquatic life(c) The river water to become cleaner(d) Trees along the riverbank to grow taller
- 6.
Name one negative effect of dumping rubbish and waste into the sea.
Answer: ____________________________________
- 7.
Which human activity causes the MOST habitat destruction worldwide?
(a) Fishing(b) Clearing land for farming and development(c) Building bird houses(d) Collecting rainwater
- 8.
Oil spills in the ocean affect living things by —
(a) Providing food for sea birds(b) Coating animals in oil, making it hard to move, breathe, or stay warm(c) Making the water cleaner(d) Helping coral reefs grow faster
- 9.
Why does cutting down mangrove forests along the coast increase the risk of flooding in nearby areas?
(a) Mangroves produce rain(b) Mangroves act as natural barriers that absorb wave energy and reduce flooding(c) Mangroves block sunlight from the coast(d) Mangroves attract floods
- 10.
A factory built near a forest causes noise, light, and chemical pollution. Which of the following is a LIKELY effect on the forest ecosystem?
(a) More animals will move into the forest(b) Some animals will leave due to disturbance and pollution(c) The forest will grow faster(d) The pollution will have no effect on the ecosystem
Answer key — P6 Science: Man's Impact on the Environment
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- 1.(b) Cutting down large areas of forest
- 2.(b) Animals lose their habitats
- 3.(b) Building cities and towns on natural land
- 4.(b) Air pollution
- 5.(b) Excessive algae growth that uses up oxygen, killing aquatic life
- 6.harms marine life
- 7.(b) Clearing land for farming and development
- 8.(b) Coating animals in oil, making it hard to move, breathe, or stay warm
- 9.(b) Mangroves act as natural barriers that absorb wave energy and reduce flooding
- 10.(b) Some animals will leave due to disturbance and pollution
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