Wave Communication

Both analog and digital waves can experience noise as they travel. Noise is any unwanted signal that distorts or reshapes the original wave. The diagram below illustrates how the resulting waves might appear. The example above suggests that...

• digital waves cannot have noise or other distortions removed from them.

• there is no clear advantage to transmitting digital waves over analog waves.

• analog waves do not experience as much noise as digital waves.

• noise is less of a problem for digital waves than for analog waves.

Tags

NGSS.MS-PS4-3

A wave with a large wavelength will have a ______ frequency and _____ energy

• high, low

• high, high

• low, high

• low, low

Tags

NGSS.MS-PS4-1

The green arrow on the image is measuring the _________________________. _{(click text to see image)}

• wavelength

• amplitude

• crest

• trough

Tags

NGSS.MS-PS4-1

What do we call the top of a transverse wave?

• crest

• trough

• amplitude

• frequency

Tags

NGSS.MS-PS4-1

Which of the following electromagnetic waves is most commonly used for communication signals?

• Gamma rays

• X-rays

• Radio waves

• Visible light

Tags

NGSS.MS-PS4-3

It is far more difficult to make a perfect copy of an analog wave because...

• the exact value of any one piece of information is not clearly defined.

• most analog waves have wavelengths that are too long to reproduce in copies.

• analog waves travel at speeds too great for modern technologies to use.

• each individual piece of information is either a zero, a one, or a two.

Tags

NGSS.MS-PS4-3

How is the information from the audio wave stored after it is processed by the analog-to-digital converter?

• It is stored as a table of ones and twos because it was converted to a radio wave.

• It is stored as images because it was converted to mathematical equations.

• It is stored as a series of ones and zeros because it was converted to binary data.

• It is stored as graphs because it was converted to base ten data.

Tags

NGSS.MS-PS4-3

Remote controls enable users to adjust the volume and channel of televisions without having to touch the television. Which of these best describes the signals sent by remote controls to televisions?

• potential energy

• sound waves

• electromagnetic waves

• gravitational energy

Tags

NGSS.MS-PS4-2

NGSS.MS-PS4-3

Which of the following statements best explains why digital waves are commonly used in high-frequency wireless networks instead of analog waves?

• Small disruptions in analog waves are more easily corrected than in digital waves.

• It is easier to correct small disruptions in digital waves than in analog waves.

• Analog waves cannot reach large enough wavelengths to be used in wireless networks.

• Analog waves cannot reach high enough amplitudes to be used in wireless networks.

Tags

NGSS.HS-PS4-2

NGSS.HS-PS4-5

The distance between which two letters is a wavelength?

• C-A

• A-D

• A-A

• A-B

Tags

NGSS.MS-PS4-1