1. What is the efficiency of solar cells typically expressed in?

• a. Watts

• b. Kilowatts

• c. Percentage

• d. Joules

Answer explanation

The formula to calculate energy efficiency as a percentage is: (Useful Energy Output / Total Energy Input) x 100%

Tags

NGSS.HS-PS3-3

2. How much solar power is assumed to hit one square meter of solar panel in the video?

• a. 500 watts

• b. 800 watts

• c. 1000 watts

• d. 1200 watts

3. What is the efficiency of the crystalline solar cells mentioned in the video?

• a. 20%

• b. 22%

• c. 25%

• d. 28%

Tags

NGSS.HS-PS3-3

4. Based on the video, how much electrical output is expected from the solar module under ideal conditions?

• a. 220 watts

• b. 250 watts

• c. 280 watts

• d. 300 watts

Tags

NGSS.HS-PS3-3

5. What happens to the remainder of the solar power that is not converted into electrical energy?

• a. It is stored in batteries

• b. It bounces back into the atmosphere or is converted into thermal energy

• c. It is lost completely

• d. It is converted into solar fuel