Renewable and Nonrenewable Energy - Worksheet | Printable and ... - Free Printable

Let's go through each question step by step and solve them with explanations.

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Q.2. Write T for True if the statement is true; write F for False if the statement is false.

1. Renewable energy cannot be exhausted and is constantly renewed.
✔ T (True)
*Explanation:* Renewable energy sources like solar, wind, and hydro are naturally replenished on a human timescale and are not depleted when used.

2. Renewable energy resources never produce any pollution.
✘ F (False)
*Explanation:* While renewable energy produces significantly less pollution than fossil fuels, some forms (like hydropower or biomass) can still have environmental impacts such as habitat disruption or emissions during manufacturing and installation.

3. Coal, natural gas and oil are also known as nuclear fuels.
✘ F (False)
*Explanation:* Coal, natural gas, and oil are fossil fuels, not nuclear fuels. Nuclear fuels include uranium and plutonium, which are used in nuclear reactors.

4. Wind is a renewable energy resource and there are no fuel costs.
✔ T (True)
*Explanation:* Wind is a renewable source because it’s continuously generated by the sun and Earth’s rotation. Once the turbines are installed, there is no ongoing fuel cost since wind is free.

5. Energy is a fuel.
✘ F (False)
*Explanation:* Energy is not a fuel. Fuel is a substance that stores energy and can be burned or converted to release energy. Energy is what is produced or transferred from fuels.

6. All renewable energy resources have unlimited availability.
✘ F (False)
*Explanation:* While renewable resources are sustainable over long periods, they are not always "unlimited" in practical terms. For example, solar power depends on daylight and weather, and wind depends on wind speed and location. They are limited by geography, seasonality, and technology.

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Q.3. Fill in the blanks with suitable words.

a) Non-renewable energy resources are in limited supply, in danger of depletion, and take a very long time to make.
*Explanation:* Fossil fuels like coal, oil, and natural gas are non-renewable because they take millions of years to form.

b) The stored chemical energy in organic matter or wastes is called biochemical energy.
*Explanation:* This refers to energy stored in biological materials (e.g., plants, animal waste), often used in biofuels or biogas.

c) Hydroelectric energy is generated when moving water turns turbines.
*Explanation:* Hydroelectric power uses flowing or falling water to spin turbines and generate electricity.

d) Renewable energy sources can be replenished naturally in a short period of time.
*Explanation:* Renewable sources like solar, wind, and biomass are replenished quickly compared to fossil fuels.

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Q.4. Which of the following is an example of a renewable energy source?

a) coal
b) natural gas
c) nuclear energy
d) wind energy

✔ Correct answer: d) wind energy
*Explanation:*
- Coal and natural gas are fossil fuels (non-renewable).
- Nuclear energy uses uranium, which is finite and not renewable.
- Wind energy is renewable because wind is continuously generated by atmospheric processes.

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✔ Final Answers:

#### Q.2:
1. T
2. F
3. F
4. T
5. F
6. F

#### Q.3:
a) Non-renewable
b) Biochemical
c) Hydroelectric
d) Renewable

#### Q.4:
d) wind energy

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