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WorksheetsTopic 3 Lesson 4 Waves and Information
Total questions: 10
Worksheet time: 5mins
Figure 1 represents _______________ signal.
analog
digital
Figure 2 represents ______________ signal.
analog
digital
A __________ can hear a smaller range of frequencies than a ___________.
bird; human
bat; snake
porpoise; cricket
bird; snake
Select two receivers in the system.
The TV network satellite uplink and the repeater tower
Both mobile TV phones
The repeater tower and one mobile TV phone
Both repeater towers
Which part of the diagram is the antenna?
Mobile TV phone
TV network satellite uplink
Repeater tower
Satellite relay
What interaction happens at the satellite relay?
The digital information is decoded and changed into TV pictures and sound.
The code is received by the network and sent to the receiver.
The digital code is received by satellite and transmitted to a network.
Pictures and sound are changed into a digital code.
What interaction happens at the repeater tower?
The digital information is decoded and changed into TV pictures and sound.
The code is received by the network and sent to the receiver.
The digital code is received by satellite and transmitted to a network.
Pictures and sound are changed into a digital code.
What interaction happens at the TV network satellite uplink?
The digital information is decoded and changed into TV pictures and sound.
The code is received by the network and sent to the receiver.
The digital code is received by satellite and transmitted to a network.
Pictures and sound are changed into a digital code.
What interaction happens at the mobile TV phone?
The digital information is decoded and changed into TV pictures and sound.
The code is received by the network and sent to the receiver.
The digital code is received by satellite and transmitted to a network.
Pictures and sound are changed into a digital code.
How is the flag system like a radio system?
Both systems use digital signals in a short range from an antenna.
Both systems send signals that are decoded by a receiver.
Both systems receive sound waves converted into a signal.
Both systems change digital signals into analog information.
