Instructions
Read each question carefully and write your answers in the spaces provided. Try your best and have fun exploring the world of science!
Section 1: Our Environment
1. What is pollution?
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2. Why is it so important to maintain clean air?
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3. Draw a line to match the action with how it helps prevent pollution.
| Action | How It Helps |
| Walk or ride a bike. | It cleans the air by taking in carbon dioxide. |
| Plant a tree. | It reduces the amount of plastic waste in landfills and oceans. |
| Use a reusable bag for shopping. | It reduces harmful gas fumes from cars. |
Section 2: Forces of Nature
1. List three important uses of water in our daily lives.
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2. Name two things that can happen when a strong wind blows.
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Section 3: Our Senses
1. What would happen if we could not hear? Describe some challenges we might face.
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Section 4: Word Power
Draw a line to match each word on the left with its correct meaning on the right.
| Word | Meaning |
| Resources | The highness or lowness of a sound. |
| Precious | The power or skill to do something. |
| Pitch | Very valuable and important; not to be wasted. |
| Ability | Materials or substances such as minerals, forests, and water that can be used for economic gain. |
Answer Key
Section 1: Our Environment
1. What is pollution?
Pollution is when harmful substances or contaminants are introduced into the environment, making it dirty, unsafe, or unsuitable for use.
2. Why is it so important to maintain clean air?
We need clean air to breathe so our bodies can stay healthy. Dirty or polluted air can cause sickness, breathing problems, and harm plants and animals.
3. Match the action with how it helps prevent pollution.
- Walk or ride a bike. âžž It reduces harmful gas fumes from cars.
- Plant a tree. âžž It cleans the air by taking in carbon dioxide.
- Use a reusable bag for shopping. âžž It reduces the amount of plastic waste in landfills and oceans.
Section 2: Forces of Nature
1. List three important uses of water. (Answers may vary, but here are some examples):
- For drinking
- For bathing and cleaning
- For watering plants and growing food
2. Name two things that can happen when a strong wind blows. (Answers may vary, but here are some examples):
- Trees can bend or fall over.
- It can blow objects around and damage buildings.
Section 3: Our Senses
1. What would happen if we could not hear? (Answers may vary, but here are some examples):
We would not be able to hear people speaking to us, listen to music, or hear warning sounds like fire alarms or car horns. Communication would be more difficult.
Section 4: Word Power
Match each word with its correct meaning.
- Resources âžž Materials or substances such as minerals, forests, and water that can be used for economic gain.
- Precious âžž Very valuable and important; not to be wasted.
- Pitch âžž The highness or lowness of a sound.
- Ability âžž The power or skill to do something.