Chapter 6 Electromagnetic Waves 11-20

What does GPS stand for?

• Global Positioning System

• Global Placement System

• Geographic Positioning System

• Global Position Satellite

What does a radio pick up through an antenna?

• Light waves

• Sound waves

• Radio waves

• Water waves

Which of the following is true about microwaves?

• A) They have the longest wavelength of the radio waves

• B) They have the shortest wavelength of the radio waves

• C) They have the highest frequency of the radio waves

• D) Both B and C.

Fill in the blank: In the electromagnetic spectrum, microwaves are positioned between radio waves and _______.

• A) Infrared

• B) Ultraviolet

• C) X-rays

What is the primary use of microwaves in ovens?

• To cool food

• To transfer energy to water in food

• To freeze food

• To dry food

In a microwave oven, waves transfer energy to the ______ in the food, causing them to vibrate.

• air

• oil

• water

• sugar

Which of the following is a use of RADAR?

• Measuring temperature

• Finding speed of an object

• Calculating weight

• Determining color

RADAR works by sending out radio waves and measuring the time it takes for them to return. True or False?

• True

• False

Which part of RADAR technology involves measuring time?

• A) Detection

• B) Ranging

• C) Radio

• D) Speed

What does the term 'infrared' mean?

• Above red

• Below red

• Equal to red

• Opposite of red