HOW DO MICROWAVES HEAT UP FOOD?

APPLICATIONS OF WAVES IN SOCIETY

• Micro waves are used to heat food in microwave ovens.
• They are also used in cell phones, radars and GPS

HOW DO THEY HEAT FOOD?

• Water molecules inside food absorbs microwave radiation and heats up the surrounding food

POSSIBLE DANGERS

• Microwave ovens will blow up if you put metal in it
• Does not make food radioactive

WAVELENGTHS

• Usually a couple of centimeters
• Frequency range: 300 Hz to 300 GHz

INTERESTING FACTS

• First microwave oven ever built was 6 ft. tall
• It weighed 750 lbs.

CITATIONS

• Darvill.clara.net