Renewable Energy Sources and Technologies

The video by Brian Glass explores alternative energy sources: geothermal, wind, hydropower, and solar. It explains how each source works, their advantages, and disadvantages. Geothermal energy uses Earth's heat, wind power harnesses atmospheric energy, hydropower utilizes moving water, and solar power converts sunlight. The video highlights the need for renewable energy to reduce reliance on harmful, non-renewable sources, emphasizing sustainability and environmental protection.

What is the primary source of energy for geothermal power plants?

• Earth's core heat

• Wind

• Sunlight

• Water currents

Which type of geothermal power plant uses a flash tank to convert water into vapor?

• Binary cycle power plant

• Flash steam power plant

• Hydroelectric power plant

• Dry steam power plant

What is a major advantage of wind energy?

• It is an endless energy source

• It is unaffected by weather

• It is dependent on fossil fuels

• It produces harmful byproducts

How is electricity generated in a windmill?

• By heating water

• By turning a turbine with wind

• By using solar panels

• By burning coal

What is a key benefit of hydropower?

• It produces harmful emissions

• It requires no infrastructure

• Water can be reused

• It is non-renewable

What is a disadvantage of building large hydroelectric dams?

• They are inexpensive to build

• They produce a lot of pollution

• They require minimal land

• They need large amounts of water and land

What technology is used to convert solar energy into electricity?

• Geothermal plants

• Wind turbines

• Solar panels

• Hydroelectric dams

What is a limitation of solar panels?

• They are cheap to build

• They are dependent on sunlight availability

• They produce harmful byproducts

• They are unaffected by weather

What percentage of the world's energy supply is represented by renewable sources?

• 25%

• 4%

• 50%

• 85%

Why is it important to invest in renewable energy sources?

• To increase pollution

• To increase fossil fuel consumption

• To prevent environmental harm

• To reduce energy availability