Energy Sources Review

Front

What is a fossil fuel?

Back

Fossil fuels are natural substances formed from the remains of ancient plants and animals, which are used as energy sources. Examples include coal, oil, and natural gas.

Front

Name three types of fossil fuels.

Back

Coal, petroleum (oil), and natural gas.

Front

Why are fossil fuels considered nonrenewable resources?

Back

Fossil fuels are considered nonrenewable because they take millions of years to form and cannot be replenished within a human timescale.

Front

What is natural gas?

Back

Natural gas is a fossil fuel that is primarily composed of methane and is used for heating, electricity generation, and as a fuel for vehicles.

Front

What is hydropower?

Back

Hydropower is a renewable energy source that uses the energy of moving water, such as rivers or waterfalls, to generate electricity.

Front

What is geothermal energy?

Back

Geothermal energy is the heat that comes from the Earth's interior, which can be used for heating and electricity generation.

Front

What is conduction?

Back

Conduction is the transfer of heat through direct contact between materials, where heat moves from warmer to cooler areas.

Front

What is convection?

Back

Convection is the transfer of heat through the movement of fluids (liquids or gases) caused by differences in temperature and density.

Front

What is radiation?

Back

Radiation is the transfer of energy through electromagnetic waves, such as sunlight, which can travel through a vacuum.

Front

What is biomass?

Back

Biomass is organic material that comes from plants and animals, which can be used as a renewable energy source.