Renewable and Nonrenewable Resources Core 4

Front

What is solar energy?

Back

Solar energy is energy from the sun that is converted into thermal or electrical energy using photovoltaic cells.

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 geothermal energy?

Back

Geothermal energy is the heat energy generated and stored in the Earth, which can be used to heat and cool buildings.

Front

How is hydroelectric power generated?

Back

Hydroelectric power is generated by dams on rivers, where flowing water turns a turbine to generate electricity.

Front

What describes wind power generation?

Back

Wind power generation involves using turbines turned by air currents to generate electricity.

Front

Define renewable resources.

Back

Renewable resources are natural resources that can be replenished naturally over time, such as solar, wind, and geothermal energy.

Front

Define nonrenewable resources.

Back

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

Front

What is the main advantage of using renewable resources?

Back

The main advantage of using renewable resources is that they are sustainable and have a lower environmental impact compared to nonrenewable resources.

Front

What is the environmental impact of coal mining?

Back

Coal mining can lead to habitat destruction, air and water pollution, and contributes to greenhouse gas emissions.

Front

What is the role of photovoltaic cells?

Back

Photovoltaic cells convert sunlight directly into electricity.