Lesson 1, Exploration 2
What is well suited for sending information?
Waves
What is the process of varying a property in a wave in order to encode info into a wave
Wave modulation
What is made up of a continuous range of numerical data?
Analog information
Any unwanted change to a signal
Noise
Simple signal that can be done by humans
Analog Signals
What is anything that can transmit information?
Signal
What do you call it when you vary the frequency of a wave?
Frequency Modulation
What is made up of discrete numerical values?
Digital information
What types of signals can noise affect
All types
Complex signal that requires a computer to decode
Digital signal
What sends and receives information using radio waves?
Radio
What do you call it when you vary the amplitude of a wave?
Amplitude modulation
A signal that contains analog info is what?
Analog signal
What wave is continuous
Analog waves
Signal that is useful when applications do not require perfect accurate transmission
Analog signals
What sends and receives audio information?
Telephone
What type of modulation can be transmitted over further distance?
Amplitude modulation
A signal that contains digital info is what?
Digital information
What wave is not continuous
Digital waves
Books and computers are examples of what signals
Digital
What are some characteristics of EM waves?
Easily modified and high speed
What type of modulation can transmit info more high quality?
Frequency Modulation
What are binary digital signals?
When the two distinct values are 1 or 0
Noise does not have as large of an affect on what type of wave
Digital waves
Signal that is used when signals need to be extremely reliable
Digital signals