Wind Energy and Power Calculation Quiz

What causes wind to occur on Earth?

• The Earth's magnetic field

• The gravitational pull of the moon

• Uneven heating of the Earth's surface

• The rotation of the Earth

What is the first step in creating a paper pinwheel for the windmill experiment?

• Printing out the wind blade template

• Folding the flaps towards the center

• Cutting the drinking straw

• Taping the pinwheel to the coffee stirrer

Which of the following best describes power?

• Energy used over time

• The speed of an object

• The mass of an object

• Energy stored in an object

What is the formula for calculating power?

• Power = Mass x Velocity

• Power = Force x Distance

• Power = Energy x Time

• Power = Energy / Time

In the windmill experiment, what is the gravitational force constant of Earth used in calculations?

• 9.5 m/s²

• 8.9 m/s²

• 10 m/s²

• 9.8 m/s²

How much energy was used to lift the paperclips in the windmill experiment?

• 0.176 joules

• 0.150 joules

• 0.200 joules

• 0.100 joules

What is the power rating of the windmill in the experiment?

• 0.01 watts

• 0.02 watts

• 0.03 watts

• 0.04 watts

How do large wind turbines compare to the small windmill experiment in terms of power?

• They are about 1 million times more powerful

• They are about 150 million times more powerful

• They are about 1,000 times more powerful

• They are about 100 times more powerful

What is the average power rating of large wind turbines?

• 2 or 3 gigawatts

• 2 or 3 megawatts

• 2 or 3 terawatts

• 2 or 3 kilowatts

Why is it important to innovate in wind energy technology?

• To increase the size of wind turbines

• To reduce the cost of wind turbines

• To decrease the noise produced by wind turbines

• To make wind turbines more efficient and effective