Understanding Microwaves

How does a microwave oven differ from a regular oven in terms of heating?

• Regular ovens use microwaves to heat food.

• Both use the same method to heat food.

• Microwave ovens heat food using microwaves, not infrared radiation.

• Microwave ovens use infrared radiation.

What type of radiation is used by microwave ovens to heat food?

• Infrared radiation

• Ultraviolet radiation

• Microwaves

• Gamma rays

How were microwave ovens discovered?

• Through a planned experiment with food.

• By accident when a scientist's candy bar melted.

• By observing the sun's radiation.

• Through a study of radio waves.

Why doesn't the microwave oven itself get hot?

• Because it uses a special type of glass.

• Because microwaves are reflected by the metallic sides.

• Because microwaves are absorbed by the oven walls.

• Because it uses a cooling system.

Why is it safe to look through the glass window of a microwave oven?

• The glass is too thick for microwaves to pass through.

• The microwaves are absorbed by the glass.

• There is a metal mesh that keeps microwaves inside.

• The microwaves are too weak to escape.