Microwave Ovens

What decade was the microwave oven invented in?

• 1950s

• 1960s

• 1940s

• 1840s

Who invented the microwave?

• Percy Spencer

• John Smith

• Spencer Percy

• Mr. Moore

Which one of these is radar NOT used for?

• Locate nearby enemy ships and submarines

• Help ships locate other ships so they don't crash

• Help with weather forecasting

• Shoot down enemy airplanes

Radio waves, light and X-rays are examples of what?

• electromagnetic radiation

• thermonuclear weapons

• microwave ovens

• quantum physics

What happens to the radiation in a microwave?

• It explodes the food

• It passes through food and moves water molecules, which generates heat to cook food

• It will heat up the whole microwave, like an oven

• It will cook the food by setting it on fire

What should you NEVER put in the microwave?

• metal

• potatoes

• meat

• milk

_________: energy that comes from a source that travels at the speed of light

Electromagnetic _____ : an electric charge flow covering an area

________ : a group of atoms bonded together

_____ : a hard and solid material that allows electricity and heat to pass through

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