Communicating with Signals

Sign language and written language are examples of signals used to communicate.

• True

• False

Tags

NGSS.MS-PS4-3

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 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.MS-PS4-3

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

Sign language and written language are examples of signals used to communicate

• True

• False

How does noise affect a signal?

• It causes the signal to deteriorate

• It amplifies the signal

• It allows the signal to travel further

• It changes the signal as it moves from one medium to another

Tags

NGSS.MS-PS4-3

The following is the graph of ___________________________

• An analog signal

• A digital signal

Tags

NGSS.MS-PS4-1

NGSS.MS-PS4-3

All of the following are types of electromagnetic waves that can be used to transmit signals except ________________.

• sound waves

• light waves

• radio waves

• microwaves

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