Solar Power

Front

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

Back

ten thousand times

Front

What are solar panels made up of?

Back

solar cells

Front

Most solar cells are made of _____.

Back

silicon

Front

How many bonds connect a silicon atom to its neighbours?

Back

Four

Front

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

Back

Two

Front

_____ cells are required to charge a mobile phone.

Back

Twelve

Front

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

Back

Availability of silicon for solar cells

Front

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

Back

The energy is lost.

Front

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

Back

46%

Front

Is it possible to utilise solar power to meet the whole world's needs despite current limitations?

Back

True