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Which signal is made up of infinite possible values?
Analog Signals
Which signal loses accuracy over long distances?
Analog Signals
Human voice is an example of
Analog Signals
Which signal is smooth and continuous?
Analog Signals
Which signal is NOT continuous?
Digital Signals
Which signal can only take on the values of 0 or 1?
Digital Signals
Which value represents a digital signal being on?
1
Which value represents a digital signal being off?
0
What is the name of the code that uses 0's and 1's to transmit information?
Binary Code
Which signal can travel long distances without losing its quality?
Digital Signals
Which signal is used in computers and cell phones?
Digital Signals
Which signal is shown on this graph?
Digital Signals
Which signal is shown on this graph?
Analog Signals
Which signal is best for storing large amounts of data?
Digital Signals
Which signal is more susceptible to background noise/interference?
Analog Signals
Which signal is more reliable?
Digital Signals
Which signals are more secure and useful for confidential information?
Digital Signals
Which signal can easily correct noise or distortion?
Digital Signals
Which signal has waves with a step-like appearance?
Digital Signals
All waves transfer what?
Energy
When the sender and receiver agree on what the signal means
Encoding
The person receiving this message needs to be able to ______ the message
decode
What transmits information?
Waves
What makes nearly every form of communication possible?
Waves
When an electromagnetic waves has been encoded, we say the wave has been...
modulated
The process of varying the properties of a wave in order to encode information is called...
modulation
Any unwanted change to a signal
Noise
True or False: Noise does not only include sound.
True
This image is an example of...
Noise interference
True or False: When an analog signal is changed because of noise, the information in the signal is also changed.
True
True or False: Noise does not have as large an effect on digital signals because they have defined levels.
True
Combinations of short (dot) and long (dash) wave pulses that represent letters and numbers
Morse Code
Samuel Morse developed which telecommunication system?
Morse Code
How often a signal is recorded or converted to digital code is known as the
Sampling Rate
True or False: More data are captured and recorded the more times the event is sampled
True
True or False: The higher the sampling rate, the smaller the file size.
False
Small uniform shapes that are combined to make a larger image
Pixels
True or False: This image could be described as pixelated.
True
True or False: This image could be described as pixelated.
False
Which signal is this image an example of?
Analog Signal


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