Wave Communication

The Global Positioning System, or GPS, uses a network of satellites that orbit the Earth to calculate and track locations. Which of the following best describes the signals sent and received by satellites?

• electromagnetic waves

• gravitational energy

• sound waves

• potential energy

Tags

NGSS.MS-PS4-2

The orca uses this behavior of waves to locate food.

• Refraction

• Reflection

• Absorption

• Transmission

Tags

NGSS.MS-PS4-1

NGSS.MS-PS4-2

On vacation, you bring a radio to the beach. The radio can pick up several different radio stations. Which is the best explanation for this?

• Sound waves can travel through the air from the station to your radio.

• Radio stations broadcast from different locations using their own transmitters.

• Sound of different pitches are used to transmit information from each radio station. These sound waves can travel over land.

• Waves are used to transmit the radio signal through the air. These waves are encoded at different frequencies for different stations.

Tags

NGSS.MS-PS4-2

What types of waves can travel through empty space AND mediums?

• Longitudinal

• Mechanical

• Electromagnetic

Tags

NGSS.HS-PS4-3

The number of waves passing a given point each second is:

• Frequency

• Wave speed

• Wavelength

• Amplitude

As wavelength decreases, the crests of the wave:

• become wider

• become shorter

• get closer together

• get farther apart

Tags

NGSS.HS-PS4-1

Which wave has the largest frequency?

• A

• B

• C

• None (same frequency)

Tags

NGSS.MS-PS4-1

Which best compares the reliability of analog signals and digital signals?

• Only analog signals are reliable

• Analog signals are more reliable than digital signals

• Digital signals are more reliable than analog signals

• Both types of signals are equally reliable

Tags

NGSS.MS-PS4-3

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

• A) Sound waves

• B) Electromagnetic waves

• C) Mechanical waves

• D) Gravitational waves

Tags

NGSS.MS-PS4-3

In wave communication, what is the role of a transmitter?

• A) To receive signals

• B) To amplify signals

• C) To send signals

• D) To decode signals