Communicating with Signals

A piece of information that is communicated through using the senses.

• signal

• noise

• wave

• code

Tags

NGSS.MS-PS4-3

To send a signal, who must understand how the signal was encoded?

• just the sender

• just the receiver

• both the sender and the receiver

• neither the sender nor the receiver

Tags

NGSS.MS-PS4-3

Which are examples of transmitting a signal? (select ALL that apply)

• talking to another person

• electromagnetic waves in wires

• information stored on a hard drive

• an encyclopedia

Tags

NGSS.MS-PS4-2

NGSS.MS-PS4-3

Which is a disadvantage of using waves to carry signals?

• they lose energy as they travel

• they move information too fast

• it's difficult to decode the information

• signals often get lost

Tags

NGSS.MS-PS4-3

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

Tags

NGSS.MS-PS4-3

Tags

NGSS.MS-PS4-3

Which examples are causes of 'noise' in a signal? (select ALL that apply)

• increasing distance from the source

• interference from other signals

• a clear connection

• fiber optics

How do fiber optics send a signal?

• reflection of light

• refraction of light

• diffraction of light

• transmission of electricity

Tags

NGSS.MS-PS4-2

Compare the two signals. Signal B...

(select ALL true statements)

• is moving faster

• has more noise

• is not as clear or reliable

• has more energy

Tags

NGSS.MS-PS4-1

NGSS.MS-PS4-3