Chapter 9 Lesson 3 (Radio Communications)

Wireless Communication

Multiple Choice

What does the FM stand for in FM radio?

• Amplitude modulation

• Frequency modulation

• Frequency medium

• Fiber-optic modulation

Open Ended

What do you think is a cell phone's most important job?

Multiple Choice

What does the am stand for in am radio?

• Amplitude magnetic field

• Frequency modulation

• Amplitude Modulation

• Analog Modulation

Broadcasting

• Charged PARTICLES inside ANTENNAS produce radio waves. 

• Radio waves CARRY INFORMATION from the antenna of a broadcasting station to the RECEIVING antenna of your radio. 

Multiple Choice

Which answer choice explains what analog means?

• Electrical

• Mechanical / Wind up

• Data expressed as single digits usually 0 and 1

• Smooth and continuous data

Multiple Choice

Which of the following answer choices explains what digital means?

• Data expressed as single digits, usually 0 and 1

• Smooth and continuous data

• Electrical

• computerized

Multiple Choice

Which of the following answer choices explains what a carrier wave is?

• A wave that can only travel through a medium

• A wave of electricity and magnetism that can travel through a medium or empty space

• A wave in which the waves medium is compressed in the same direction as the movement of the wave

• An electromagnetic wave whose amplitude or frequency is modulated to transmit information

Multiple Choice

What type of information can be sent by radio waves?

• Radio

• Radio and video

• Cell phone and Internet data

• All kinds of data

Multiple Choice

Which property of AM frequencies allow them to travel over long distances?

• long wavelength

• high amplitude

• constant velocity

• high energy

Multiple Choice

Which of the following answer choices explains what a pixel is?

• Measures how fine and smooth a digital picture is

• One element of a digital picture

• It measures how much focus a digital picture has.

• The clarity of detail in an image

Open Ended

Why do we use FM radio waves more often than AM waves signals?

Multiple Choice

Which of the following answer choices explains what resolution is?

• The clarity of detail in an image

• One element of a digital picture

• Measures how fine and smooth a digital picture is

• Measures how much focus a digital camera has.

Multiple Choice

What kind a wave is pictured?

• Analog wave

• Digital wave

• Radio wave

• Microwave

Multiple Choice

Which of the following does NOT use radio frequencies?

• radio stations

• taxi cabs

• police radios

• racecar drivers

Multiple Choice

What kind a wave is pictured?

• Analog wave

• Digital wave

• Radiowave

• Microwave

Multiple Choice

Which type of waves do cell phones use?

• Radio waves

• Infrared waves

• Microwaves

• Telephonial

Fill in the Blank

When you make a call, your cell phone sends out waves tagged with your ___________.

Fill in the Blank

Communications satellites receive signals and then relay those signals to different kinds of _____________ on Earth.

Open Ended

What is the purpose of a satellite dish?

Multiple Select

Which of the following can submit signals to satellites? (Select all that apply.)

Fill in the Blank

GPS satellites work together to provide the exact __________ of someone on Earth with a GPS receiver.

Multiple Choice

How many signals are used to determine your location with GPS?

• 24

• 12

• 1

• 4