Renewable Energy V2

PV panels

• generate electricity

• transform electricity

• store electricity

What choice material is a PV cell made of

• plastic

• metal

• silicon

In a PV cell

• The upper layer is positively charged and the lower one is negatively charged

• Both layers are poitively charged

• The upper layer is negatively charged and the lower one is positively charged

Producing a desired result without wasting time, energy, money, or other resources.​

• Efficiency

• Productivity

• Input

• Output

What kind of energy does an object possess when it's resting on top of the hill?

• Potential Energy

• Chemical Energy

• Kinetic Energy

• All of the above

What force causes a roller coaster cart to slow down the most?

• friction

• weight

• gravity

• air resistance

Which 2 letters have the most kinetic energy

• W & Y
• X & Z

The Three Gorges Dam is located in ________.

• Hong Kong

• Taiwan

• Singapore

• China

The Three Gorges dam can produce as much electricity as ____ nuclear power stations.

• 4

• 8

• 16

• 20

Do the blades spin fast enough to generate enough electricity to power homes without the use of a gear box?

• Yes

• No

• Not enough information