Sources of Pollution (Years 3-4) | CGP Plus - Free Printable

Let's solve the task step by step based on the worksheet titled "Sources of Pollution".

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Task 1: Sort the sources of pollution into natural and man-made

We are given a list of pollution sources labeled A to L. We need to classify each as either Natural or Man-made.

#### List of Sources:
A. Burning fossil fuels
B. Noise from an airport
C. Volcanic ash
D. Wild animals fouling water sources
E. Spills from oil tankers in the ocean
F. Silt from flooding entering water supply
G. Dust storms
H. Excessive light from cities
I. Smoke from wildfires
J. Radioactive leakage from a nuclear powerplant
K. Dumping rubbish
L. Fumes from traffic

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✔ Classification:

#### Natural Sources (occur without human intervention):
- C. Volcanic ash – Emitted during volcanic eruptions.
- D. Wild animals fouling water sources – Animals naturally defecate or die in water bodies.
- F. Silt from flooding entering water supply – Flooding is a natural event that carries silt.
- G. Dust storms – Caused by wind and dry soil, often natural.
- I. Smoke from wildfires – Fires caused by lightning or natural events.

> Note: While some wildfires can be human-caused, "wildfires" in this context usually refers to natural fires.

#### Man-made Sources (caused by human activity):
- A. Burning fossil fuels – Human use of coal, oil, etc.
- B. Noise from an airport – Airports are human-built and generate noise.
- E. Spills from oil tankers in the ocean – Result of shipping and human error.
- H. Excessive light from cities – Artificial lighting from urban development.
- J. Radioactive leakage from a nuclear powerplant – Man-made facility.
- K. Dumping rubbish – Waste disposal by humans.
- L. Fumes from traffic – Emissions from vehicles.

> Note: Even though I. Smoke from wildfires may seem ambiguous, if it's specified as *wildfires*, it’s generally considered natural unless stated otherwise.

But note: Some sources like wildfires can be both natural and man-made. However, since the option says "wildfires", we assume they are natural.

So final classification:

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✔ Final Answer for Task 1:

| Natural | Man-made |
|-------------|--------------|
| C. Volcanic ash | A. Burning fossil fuels |
| D. Wild animals fouling water sources | B. Noise from an airport |
| F. Silt from flooding entering water supply | E. Spills from oil tankers in the ocean |
| G. Dust storms | H. Excessive light from cities |
| I. Smoke from wildfires | J. Radioactive leakage from a nuclear powerplant |
| | K. Dumping rubbish |
| | L. Fumes from traffic |

> Wait — I. Smoke from wildfires — if the fire is caused by lightning, it's natural. But if it's due to human negligence, it's man-made. Since the label is “wildfires,” it’s generally accepted as natural in educational contexts.

✔ So I goes under Natural.

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Task 2: Choose one source of air pollution and one source of water pollution and draw an illustration of each happening.

This part requires drawing, but since we're solving textually, let's describe what should be drawn.

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#### ✔ Example Answer:

Air pollution source:
L. Fumes from traffic
➡️ Illustration description: Draw a busy city street with cars, buses, and trucks emitting smoke from their exhaust pipes. Include smog or gray clouds above the road.

Water pollution source:
E. Spills from oil tankers in the ocean
➡️ Illustration description: Draw a large oil tanker leaking black oil into the sea. Show oil spreading across the water surface, harming fish and birds.

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✔ Summary:

#### Final Answers:

1. Classification:

| Natural | Man-made |
|-------------|--------------|
| C. Volcanic ash | A. Burning fossil fuels |
| D. Wild animals fouling water sources | B. Noise from an airport |
| F. Silt from flooding entering water supply | E. Spills from oil tankers in the ocean |
| G. Dust storms | H. Excessive light from cities |
| I. Smoke from wildfires | J. Radioactive leakage from a nuclear powerplant |
| | K. Dumping rubbish |
| | L. Fumes from traffic |

2. Drawing Suggestions:
- Air pollution: Fumes from traffic → draw cars emitting smoke.
- Water pollution: Oil spill from tanker → draw oil spreading in ocean.

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Let me know if you'd like a printable version or help creating the illustrations!