Module L Unit 2: Analog and Digital Signals

A signal is

• a radio wave with an unchanging amplitude and frequency.

• a radio wave with an unlimited range.

• a wave that can only be generated in analog.

• anything that carries information and can be detected.

Tags

NGSS.HS-PS4-5

What is an analog signal?

• A signal that is represented by continuous waves.

• A signal that is represented by discrete values.

• A signal that can only represent two values.

• A signal that cannot be easily converted to digital form.

Tags

NGSS.HS-PS4-5

What is a digital signal?

• A signal that varies over a continuous range.

• A signal that is represented by binary numbers.

• A signal that can only be transmitted over analog media.

• A signal that is less accurate than an analog signal.

Tags

NGSS.HS-PS4-2

Which process is used to convert an analog signal to a digital signal?

• Digital-to-Analog Conversion

• Analog-to-Digital Conversion

• Signal Processing

• Binary Encoding

Tags

NGSS.HS-PS4-5

During the Digital-to-Analog Conversion process, what is primarily generated?

• Binary numbers

• Continuous waves

• Discrete steps

• Quantum bits

Tags

NGSS.HS-PS4-5

What is a major advantage of digital signals over analog signals?

• Higher susceptibility to noise

• Continuous variation

• Easier to process and compress

• Requires more bandwidth

Tags

NGSS.HS-PS4-2

What is a disadvantage of analog signals?

• They can be easily encrypted.

• They are more susceptible to noise and distortion.

• They can be easily compressed.

• They require less bandwidth.

Which of the following is NOT an advantage of digital signals?

• Higher noise immunity

• Easier storage

• Unlimited bandwidth

• Easier to manipulate

Tags

NGSS.HS-PS4-2

In the context of signal conversion, what does ADC stand for?

• Analog Digital Converter

• Analog-to-Digital Conversion

• Advanced Digital Conversion

• Audio Digital Conversion

Tags

NGSS.MS-PS4-3

Which component is essential for converting digital signals back to analog form?

• Amplifier

• Digital-to-Analog Converter (DAC)

• Filter

• Modulator