Waves in Communication

The distance between which two letters is a wavelength?

• C-A

• A-D

• A-A

• A-B

Tags

NGSS.MS-PS4-1

What does the FM stand for in FM radio?

• Amplitude modulation

• Frequency modulation

• Frequency medium

• Fiber-optic modulation

Tags

NGSS.MS-PS4-1

What does the am stand for in am radio?

• Amplitude magnetic field

• Frequency modulation

• Amplitude Modulation

• Analog Modulation

What type of information can be sent by radio waves?

• Radio

• Radio and video

• Cell phone and Internet data

• All kinds of data

Tags

NGSS.MS-PS4-3

What kind a wave is pictured?

• Analog wave

• Digital wave

• Radio wave

• Microwave

Tags

NGSS.MS-PS4-1

NGSS.MS-PS4-3

What kind a wave is pictured?

• Analog wave

• Digital wave

• Radiowave

• Microwave

Tags

NGSS.MS-PS4-1

NGSS.MS-PS4-3

Two boys playing in their neighborhood are communicating with each other using two-way radios (also known as walkie-talkies). They are one mile away from each other, and they cannot see each other. Which kinds of waves are the boys using for this communication?

• They are using and radio waves (electromagnetic), and sound waves (mechanical).

• They are using sound waves (electromagnetic) and radio waves (mechanical).

• They are using sound waves (electromagnetic) and X-ray waves (mechanical).

Tags

NGSS.MS-PS4-1

NGSS.MS-PS4-2

Fiber optic cables have greatly improved communication systems by increasing the bandwidth for data/images to be transmitted. Which kinds of waves are used with fiber optic cables, and how fast can waves propagate through these cables?

• They use ultraviolet waves that move at the speed of light.

• They use visible light waves that move at the speed of light.

• They use a combination of radio waves and sound waves at the speed of sound.

Tags

NGSS.MS-PS4-1

NGSS.MS-PS4-2

Examine the wave diagrams. Which of the following answers correctly explains how light waves and radio waves are different from all mechanical waves?

• Radio and light waves can propagate without a medium in a vacuum.

• Light and radio waves are always transverse waves, never longitudinal.

• Light waves and radio waves slow down in a vacuum. Mechanical waves speed up.

Tags

NGSS.MS-PS4-1

NGSS.MS-PS4-2

What type of wave is primarily used in mobile phone communication?

• Sound waves

• Radio waves

• Microwaves

• Infrared waves

Tags

NGSS.HS-PS4-5