Solar plates (panels) are made of which type of material?

Correct answer: Silicon. Most solar panels are made of silicon, which converts sunlight into electricity.

Background: Silicon is a semiconductor.

• Lithium: Lithium is mainly used in batteries.
• Graphite: Graphite is used in pencils and batteries.
• None of these: “None of these” is incorrect because silicon is correct.

Did you know? Solar cells work through the photovoltaic effect.

Memory trick: Solar = silicon.