Energy Sources

The video discusses various energy sources, highlighting their origins, particularly from the sun. It covers renewable sources like solar, wind, and hydroelectric, and non-renewable ones like geothermal, tidal, and nuclear. The video emphasizes the need to shift from fossil fuels to renewable energy to combat climate change. It also explores the reliability of different energy sources and the ongoing research in nuclear fusion.

Which of the following is NOT a source of energy mentioned in the introduction?

• Biomass

• Nuclear fusion

• Hydrogen fuel cells

• Muscle power

What natural phenomenon is primarily responsible for creating winds?

• The heating effect of the sun

• The gravitational pull of the moon

• The movement of ocean currents

• The rotation of the Earth

How is hydroelectric energy generated?

• By using geothermal heat

• By trapping water at high tide

• By evaporating water with sunlight and storing it behind dams

• By using wind turbines

Which energy source is derived from the Earth's internal heat?

• Solar energy

• Wind energy

• Geothermal energy

• Tidal energy

What causes the tides that are used to generate tidal energy?

• The movement of ocean currents

• The heating effect of the sun

• The rotation of the Earth

• The gravitational pull of the sun and moon

Why is nuclear power considered a non-solar energy source?

• It uses the Earth's internal heat

• It is generated by wind turbines

• It does not depend on daily solar input

• It relies on the sun's energy

What is a major environmental concern associated with burning fossil fuels?

• Release of oxygen

• Increase in greenhouse gases

• Depletion of water resources

• Reduction in wind energy