May 3 ELT

Who discovered the technology behind microwave ovens?

• Isaac Newton

• Nikola Tesla

• Albert Einstein

• Percy Spencer

What happens to water molecules when they are exposed to microwaves?

• They evaporate

• They vibrate

• They split

• They freeze

What is NOT a result of microwaving food?

• Cooking unevenly

• Heating through friction

• Chemical alteration of food

• Generating microwaves

What does microwave radiation in physics describe?

• Sound waves

• A type of light visible to humans

• Transfer of energy across a gap

• A dangerous form of energy

Why is microwaving metal sometimes dangerous?

• It makes the food toxic

• It can cause sparks

• It has no effect

• It stops the microwave