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Waves & Information

Science Unit 3 Lesson 4

QuestionAnswer
What is a range? All the possibilities between two end points
What are all the possibilities between two end points? Range
What is larger… the range of light humans CAN see or CANNOT see Cannot
What do radio waves send? A signal
What is a signal A message with information
What is a message with information? Signal
A signal must travel from….. one device to another
What travels from one device to another? Signal
What is the part of a device that sends OUT radio signals? transmitter
What is a transmitter The part of the device that sends out signals
What is the part of a device that takes IN radio waves? Antenna
What does an antenna do? The part of the device that takes IN signals
What is a receiver? Converts signals into usable messages
What converts signals into usable messages? Receiver
What types of messages do receivers turn signals into? Music, images, or data
When you make a call, what does your phone do with your voice? Encodes it into radio waves
What does a network do? Locates the person you are calling
What locates the person you are calling? Network
How does a signal reach the network of the person you are calling? Antenna
What do all computers use? Digital signals
What do digital signals use? Clear numbers, called digits
What do analog signals do? Send information in a continuous stream
What sends information in a continuous stream? Analog
What are advantages of digital signals? Easily encoded Can be sent long distances
Created by: user-2045275
 

 



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