WorksheetsCommunication and Waves
Total questions: 15
Worksheet time: 15mins
It is far more difficult to make a perfect copy of an analog wave because...
the exact value of any one piece of information is not clearly defined.
most analog waves have wavelengths that are too long to reproduce in copies.
analog waves travel at speeds too great for modern technologies to use.
each individual piece of information is either a zero, a one, or a two.
How is the information from the audio wave stored after it is processed by the analog-to-digital converter?
It is stored as a table of ones and twos because it was converted to a radio wave.
It is stored as images because it was converted to mathematical equations.
It is stored as a series of ones and zeros because it was converted to binary data.
It is stored as graphs because it was converted to base ten data.
Remote controls enable users to adjust the volume and channel of televisions without having to touch the television. Which of these best describes the signals sent by remote controls to televisions?
potential energy
sound waves
electromagnetic waves
gravitational energy
Why do people see distant events before they hear them?
Light travels faster than sound.
Sound travels faster than light.
Human eyes are more sensitive than human ears.
Human brains can only process events in that order.
Which of the following statements best explains why digital waves are commonly used in high-frequency wireless networks instead of analog waves?
Small disruptions in analog waves are more easily corrected than in digital waves.
It is easier to correct small disruptions in digital waves than in analog waves.
Analog waves cannot reach large enough wavelengths to be used in wireless networks.
Analog waves cannot reach high enough amplitudes to be used in wireless networks.
A wave with a large wavelength will have a ______ frequency and _____ energy
high, low
high, high
low, high
low, low
What type of wave is pictured?
Longitudinal
Transverse
Light
Standing
The green arrow on the image is measuring the _________________________. (click text to see image)
wavelength
amplitude
crest
trough
The distance between which two letters is a wavelength?
C-A
A-D
A-A
A-B
What do we call the top of a transverse wave?
crest
trough
amplitude
frequency
What kind of wave is this?
Transverse Wave
Longitudinal Wave
What kind of wave is this?
Transverse
Longitudinal
Numbers in an analog code can have _____ values.
any
only high
only low
only set
Which type(s) of signal(s) can be easily corrected to remove noise?
Analog
Digital
Both
Neither
Communication and Waves
Sound waves can travel through a vacuum, while electromagnetic waves cannot.
Electromagnetic waves can travel through a vacuum, while sound waves cannot.
Both sound and electromagnetic waves require a medium to travel through.
Neither sound nor electromagnetic waves require a medium to travel through.
