Digital and Analog Waves

Analog signals can be converted to digital through a process called _____.

• conversion

• processing

• sampling

• translation

Tags

NGSS.MS-PS4-3

Which type(s) of signal(s) can be transmitted as radio waves?

• Analog

• Digital

• Both

• Neither

Tags

NGSS.MS-PS4-1

NGSS.MS-PS4-2

Is music playing from a record an analog or digital signal?

• Analog

• Digital

Which type(s) of signal(s) can be easily corrected to remove noise?

• Analog

• Digital

• Both

• Neither

Tags

NGSS.MS-PS4-3

Setting the color of each pixel on a computer screen requires a _____ signal.

• analog

• digital

• loud

• fast

An advantage a digital wave has over an analog wave is

• It can be perfectly duplicated.

• It is cheaper to make.

• It is longer and conserves energy.

• It doesn't cause cancer.

Tags

NGSS.MS-PS4-3

What is the main difference between analog and digital technology?

• Digital technology reproduces sound more faithfully than analog technology

• Analog technology stores information as sound waves; digital technology stores it as strings of ones and zeroes

• Analog technology can be used to record sound and images; digital technology can only be used to record sound

• Analog technology is based on binary code; digital technology is based on electromagnets

Tags

NGSS.MS-PS4-3

Why does it take much less space to store digital information than analog information?

• Digital devices only record pieces of sound waves, not full waves

• Digital devices record sounds at lower volumes than analog devices

• Digital devices decrease the amplitudes of sound waves, making them smaller

• Digital devices automatically eliminate all background noise from the sounds they record

What might happen if your computer didn't have a digital- analog converter?

• You wouldn't be able to record sound onto it

• You wouldn't be able to store sound on its hard drive

• You wouldn't be able to listen to digital recordings on it

• You wouldn't be able to insert discs or CDs into it

Numbers in an analog code can have _____ values.

• any

• only high

• only low

• only set