Review: 20.11 to 20.15 and 21.1 to 21.10

Front

What is renewable energy?

Back

Energy that is collected from resources that are naturally replenished, such as sunlight, wind, rain, tides, waves, and geothermal heat.

Front

What is nonrenewable energy?

Back

Energy derived from resources that are finite and will eventually deplete, such as fossil fuels (coal, oil, natural gas) and nuclear energy.

Front

What is biomass energy?

Back

Energy produced from organic materials, such as plant and animal waste, which can be used for fuel.

Front

What is geothermal energy?

Back

Energy derived from the heat stored beneath the Earth's surface, used for heating and electricity generation.

Front

What are the advantages of solar energy?

Back

Solar energy is abundant, renewable, reduces electricity bills, and has low environmental impact.

Front

What are the disadvantages of wind energy?

Back

Wind energy can be intermittent, requires large areas for wind farms, and can impact local wildlife.

Front

What is the significance of carbon neutrality in energy sources?

Back

Carbon neutrality means that the net carbon emissions from an energy source are zero, contributing to reduced greenhouse gas emissions.

Front

What is the impact of using fossil fuels on the environment?

Back

Fossil fuels contribute to air pollution, greenhouse gas emissions, and climate change.

Front

What is the role of energy conservation?

Back

Energy conservation involves reducing energy consumption through using less energy or using energy more efficiently.

Front

What is the difference between renewable and nonrenewable resources?

Back

Renewable resources can be replenished naturally over time, while nonrenewable resources are consumed faster than they can be replaced.