Solar Power

The Earth receives _____ more power than from the sun than the population uses.

• ten times

• one thousand times

• ten thousand times

• one million times

Solar panels are made up of _____.

• solar cells

• sun batteries

• solar jails

• micro panels

Most solar cells are made of _____.

• silly putty

• silicon

• quartz

• tinfoil

How many bonds connect a silicon atom to its neighbours?

• One

• Two

• Three

• Four

How many different layers of silicon does a solar cell use?

• One

• Two

• Three

• Four

_____ cells are required to charge a cell phone.

• Two

• Ten

• Twelve

• Twenty

Which of the following is not a reason we do not rely entirely on solar power?

• Political factors

• Uneven distribution

• Inconsistent amounts of sunlight

• Availability of silicon for solar cells

What happens if an electron falls back into a hole before going through the circuit?

• The energy doubles.

• The energy remains the same.

• The energy is destroyed.

• The energy is lost.

The most efficient solar cell can convert _____ of available sunlight into electricity.

• 4.6%

• 46%

• 64%

• 84%

Despite the current limitations of solar power, it is possible to use it to meet the whole world's needs.

• True

• False

• I wasn't listening.