Natural resources: Part 1 (Renewables) pages 6,7,8,9

Which of the following is considered a perpetual resource?

• Coal

• Oil

• Sunlight

• Natural Gas

Answer explanation

Sunlight is a perpetual resource because it is continuously available and will not run out, unlike coal, oil, and natural gas, which are finite and deplete over time.

What is the primary reason water is considered a renewable resource?

• It can be created by humans

• It is constantly replenished through the water cycle

• It is always available in large quantities

• It is stored in underground reservoirs

Answer explanation

Water is considered a renewable resource primarily because it is constantly replenished through the water cycle, which includes processes like evaporation, condensation, and precipitation, ensuring its availability over time.

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How do solar panels generate electricity?

• By burning fossil fuels

• By using wind energy

• By absorbing radiant energy and converting it to electricity

• By using geothermal heat

Answer explanation

Solar panels generate electricity by absorbing radiant energy from sunlight and converting it into electrical energy through the photovoltaic effect, making this the correct choice.

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Which process in plants uses sunlight to produce carbohydrates?

• Respiration

• Photosynthesis

• Fermentation

• Transpiration

Answer explanation

Photosynthesis is the process in plants that uses sunlight to convert carbon dioxide and water into carbohydrates, providing energy for growth and development. The other options do not involve sunlight in carbohydrate production.

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What causes wind to occur on Earth's surface?

• The rotation of the Earth

• The gravitational pull of the moon

• Uneven heating of Earth's surface

• The movement of tectonic plates

Answer explanation

Wind occurs due to the uneven heating of Earth's surface, which creates differences in air pressure. Warm air rises, and cooler air moves in to replace it, resulting in wind.

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Which of the following is an example of biomass?

• Coal

• Natural Gas

• Wood

• Uranium

Answer explanation

Wood is an example of biomass, which refers to organic materials derived from plants and animals. In contrast, coal and natural gas are fossil fuels, and uranium is a radioactive element used in nuclear energy.

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What is the role of a turbine in generating electricity from moving water?

• It stores energy

• It converts mechanical energy into electrical energy

• It heats water to produce steam

• It filters impurities from water

Answer explanation

The correct choice is that a turbine converts mechanical energy into electrical energy. In hydroelectric power plants, moving water spins the turbine, which then generates electricity through electromagnetic induction.

Which of the following is a characteristic of geothermal energy?

• It is derived from the sun

• It is found in fossil fuels

• It is heat energy from within the Earth

• It is produced by wind turbines

Answer explanation

Geothermal energy is specifically defined as heat energy that originates from within the Earth, making "It is heat energy from within the Earth" the correct choice. The other options refer to different energy sources.

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What is Renewable Natural Gas (RNG) primarily made from?

• Fossil fuels

• Biomass

• Solar energy

• Wind energy

Answer explanation

Renewable Natural Gas (RNG) is primarily made from biomass, which includes organic materials like agricultural waste, manure, and food scraps. This process captures methane from decomposition, making it a renewable energy source.

Why is it important to manage water resources carefully?

• Because water is a non-renewable resource

• Because water is always available in unlimited quantities

• Because water is essential for survival and can become scarce

• Because water is only used for industrial purposes

Answer explanation

Water is essential for survival, supporting all forms of life. It can become scarce due to overuse, pollution, and climate change, making careful management crucial to ensure its availability for future generations.

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