Which of the following is a key advantage of using wind energy over fossil fuels?

• Wind energy is more reliable than fossil fuels.

• Wind energy doesn't produce polluting CO2 emissions.

• Wind energy is harder to get than fossil fuels.

• Wind energy requires less land than fossil fuels.

What is the primary disadvantage of solar energy compared to fossil fuels?

• Solar energy is more expensive to install.

• Solar energy is less efficient in converting energy.

• Solar energy is not available at night.

• Solar energy requires more maintenance.

How does a turbine-generator work in a hydropower plant?

• Water flows over the turbine, causing it to spin and generate electricity.

• Water is heated to produce steam, which spins the turbine.

• Water is used to cool the generator, increasing efficiency.

• Water is stored in batteries for later use.

Which renewable energy source is most commonly used worldwide?

• Wind energy

• Solar energy

• Hydropower

• Biomass

What is a significant problem associated with the use of fossil fuels?

• They are renewable and can be replenished quickly.

• They produce greenhouse gases, such as CO2, that contribute to global warming.

• They are abundant and inexpensive.

• They have no impact on the environment.

Which of the following best describes the carbon cycle's role in global warming?

• The carbon cycle removes all carbon dioxide from the atmosphere.

• The carbon cycle absorbs CO2 into the earth to produce geothermal and biomass energy.

• The carbon cycle involves the release and absorption of CO2. When the cycle is balanced, the earth temperature stays stable.

• The carbon cycle is unrelated to global warming.

Which renewable energy source is least used globally?

• Geothermal energy

• Wind energy

• Solar energy

• Biomass

In general terms, how does biomass energy work?

• It uses the heat from the Earth's core to generate electricity.

• It converts sunlight directly into electricity.

• It burns organic materials to produce heat and electricity.

• It captures wind to turn turbines and generate electricity.

What is a common method of heating steam in a geothermal power plant?

• Using solar panels to heat water.

• Using the Earth's natural heat to convert water into steam.

• Burning coal to produce steam.

• Using wind energy to heat water.

Which of the following is a key concept in understanding how solar panels generate electricity?

• Solar panels use wind to generate electricity.

• Solar panels convert sunlight directly into electricity using photovoltaic cells.

• Solar panels store electricity for nighttime use.

• Solar panels require water to generate electricity.