Renewable and Nonrenewable Resources Core 2

Front

What is geothermal energy?

Back

Geothermal energy is the heat energy generated and stored in the Earth. It is used to heat and cool buildings by utilizing the relatively constant temperature of the Earth several feet below the surface.

Front

What percentage of the world's electricity is produced by coal?

Back

Coal is used to produce approximately 30% of the world's electricity.

Front

What is renewable energy?

Back

Renewable energy is energy that can be regenerated in a short amount of time or is continuously available, such as solar, wind, and hydroelectric energy.

Front

How is electricity generated via wind power?

Back

Electricity is generated via wind power by using turbines that are turned by air currents.

Front

What is biomass?

Back

Biomass refers to plants that are grown and then used to create energy. These plants can be burned to produce electricity or processed to create fuels like ethanol or biodiesel.

Front

Define nonrenewable resources.

Back

Nonrenewable resources are natural resources that cannot be replenished in a short period of time, such as fossil fuels (coal, oil, natural gas) and minerals.

Front

What is the main difference between renewable and nonrenewable energy sources?

Back

The main difference is that renewable energy sources can be replenished naturally in a short time, while nonrenewable energy sources are finite and take millions of years to form.

Front

Give an example of a renewable energy source.

Back

An example of a renewable energy source is solar energy, which is harnessed from the sun's rays.

Front

What is wind energy?

Back

Wind energy is the energy obtained from the movement of air, which can be converted into electricity using wind turbines.

Front

What are fossil fuels?

Back

Fossil fuels are nonrenewable energy sources formed from the remains of ancient plants and animals, including coal, oil, and natural gas.