Analog vs Digital Signals
Authored by Lisa Thompson
Science
8th Grade
NGSS covered
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25 questions
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1.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Analog encoding sends or stores information using quantities that
can vary continuously.
can only have specific values.
are separated by consistent numbers.
store waves’ crest and trough sizes in small steps.
Tags
NGSS.MS-PS4-3
2.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Which of the following is NOT an analog device?
a light knob that can adjust brightness between fully on and off
a mouse connected to your computer controlling your cursor
an FM radio tower broadcasting music
a runner’s watch that can time to thousandth-second intervals
Tags
NGSS.MS-PS4-3
3.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Which of the following is an advantage of digital over analog?
Digital controls allow you more control over exact movement and direction.
Digital calculations give you more accurate measurements.
Digital controls move objects in predictable, exact increments.
Digital devices generate stronger, more precise signals and waves.
Tags
NGSS.MS-PS4-3
4.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Why is the weak analog signal harder to hear?
The weak signal’s sound and clarity decrease corresponding to its amplitude.
Radios have trouble distinguishing between weak signals and random noise.
Increased distance causes wavelengths and frequencies to change.
Radios have trouble connecting with lower-energy waves.
Tags
NGSS.MS-PS4-1
5.
HOTSPOT QUESTION
1 min • 1 pt
Tags
NGSS.MS-PS4-3
6.
HOTSPOT QUESTION
1 min • 1 pt
Tags
NGSS.MS-PS4-3
7.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Analog signals can be converted to digital through a process called _____.
conversion
processing
sampling
translation
Tags
NGSS.MS-PS4-3
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