Signals

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

• True

• False

Before a signal is sent, it must be decoded.

• True

• False

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

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-PS4-2

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-PS4-1

NGSS.MS-PS4-2

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-PS4-2

NGSS.MS-PS4-3

The following is the graph of ___________________________

• An analog signal

• A digital signal

Tags

NGSS.MS-PS4-1

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

• sound waves

• light waves

• radio waves

• microwaves

Tags

NGSS.MS-PS4-3

The following is the graph of ___________________________

• An analog signal

• A digital signal

Tags

NGSS.MS-PS4-3