Wave Review

Which of the following is an analog technology?

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Tags

NGSS.MS-PS4-3

Which type of waves can be stored as binary code?

• analog

• digital

• both analog and digital

• neither

When you send a text message to the friend, what happens first after you have typed your message?

• the phone encodes the letters of your message using ones and zeros

• the phone sends an analog wave representing your message to another phone

• the phone produces an electromagnetic wave with constant amplitude and frequency

• the phone decodes the zeros and ones and converts them into letters

What kind of wave is this?

• analog

• digital

• neither

Which type of wave is it easier to remove "noise" from when sending information from one place to another?

• analog

• digital

• both are equally difficult to remove noise from

• neither type of wave picks up noise

Which type of wave is best described as smooth and continuous?

• analog

• digital

• both analog and digital

• neither

True or false: Both analog and digital waves can be used to send messages or other communication from one place to another.

• True

• False

What is NOT an advantage of digital waves over analog waves?

• information from digital waves can be stored more efficiently than information from analog waves

• digital waves are less affected by some sources of noise than analog waves

• digital waves can provide better quality of sound or information than analog waves

• all of the other answers are true

Which property of the wave changes in an AM wave?

• amplitude

• frequency

• wavelength

• all of these answers are correct

What type of signal does a computer use?

• analog

• digital

• it could use either analog or digital

• it uses neither