Renewable Energy Sources

What are renewable energy sources primarily derived from?

• Fossil fuels

• Solar irradiation

• Tidal forces

Name two types of renewable energy that are not derived from solar energy.

• Solar and wind energy

• Wind and tidal energy

• Geothermal and tidal energy

What percentage of the solar spectrum is in the visible range?

• 25%

• 47%

• 52%

What unit is used to measure irradiance?

• Newton

• Wh/m² or J/m²

• W/m²

List the four types of irradiation.

• Direct and indirect

• Global, direct, diffuse, reflected

• Irradiation and reflection

What instrument is used to measure global solar irradiance?

• Barometer

• Pyranometer

• Anemometer

How is wind created?

• By ocean currents

• By the uneven warming of the atmosphere

• By gravitational forces

Name three types of anemometers used to measure wind speed.

• Sonic, Doppler, Cup

• Cup, propeller, hot-wire

• Pressure, cup, Doppler

What does the wind profile power law describe?

• Wind speed at different temperatures

• Wind speeds at different heights

• Wind speeds at different times of day

What is the formula for wave energy flux?

• P = T²

• P = (ρg²H²T) / 64π

• P = V²R