Signals

What do all signals that are used to communicate have in common?

• They all involve light waves

• They all send information

• They all use printed words

• They all use a series of sounds

Tags

NGSS.MS-PS4-3

Which correctly orders the steps of communication using signals?

• encode, transmit, decode

• transmit, encode, decode

• decode, transmit, encode

• transmit, decode, encode

Tags

NGSS.MS-PS4-3

Which of the following does NOT send or receive signals carried by electromagnetic waves

• cell phone

• radio

• talking in person

• garage door opener

Tags

NGSS.MS-PS4-3

The following is the graph of ___________________________

• An analog signal

• A digital signal

Tags

NGSS.HS-PS4-1

NGSS.HS-PS4-5

The following is the graph of ___________________________

• An analog signal

• A digital signal

Tags

NGSS.MS-PS4-3

An analog signal is one that changes continuously

• True

• False

Tags

NGSS.MS-PS4-3

Which is the best model of an analog signal?

• a smooth wave

• a light switch going on and off

• a series of 1’s and 0’s

• a series of pulses

Tags

NGSS.MS-PS4-3

For which type(s) of signals does noise alter the original information?

• analog only

• digital only

• both analog and digital

• neither analog nor digital

Tags

NGSS.MS-PS4-3

What is a disadvantage of using radio waves to transmit information?

• They do not permanently move matter.

• They can travel over long distances.

• They can be varied to hold information.

• They lose energy as they travel through mediums.

Tags

NGSS.MS-PS4-1

NGSS.MS-PS4-2

The image provided is a _________ signal.

• Analog

• Digital

Tags

NGSS.MS-PS4-1

NGSS.MS-PS4-3