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WorksheetsWireless communication
Total questions: 10
Worksheet time: 28mins
AM signals changes
signals
amplitude
frequency
both amplitude and frequency
The ............ of FM if constant
frequency
amplitude
Nothing
radio
Radio waves are used in communications
True
False
Order the sequence of how a radio waves work.
a) radio waves strike your radio's antenna and are picked up
b) In the interior of the radio, radio waves are converted into an electronic signals
c)At the radio station, electronics convert music into radio waves that are then broadcast by a large antenna
d)the electronic signals comes out of your radio as sound.
c,a,b,d
b,c,a,d
c,d,b,c
a,b,c,d
Cell phones transmit and receive signals using...........
wavelength
x-rays
high-frequency microwaves
depending on the situation
How do satellite communication work?
They travel around Earth
They use whatsapp to work
They send signals to clouds
They receive telephone signals and relay the signals to receivers in Earth
Which type of wave is this?
AM
FM
Visible light
Gamma rays
What do all satellite communications have in common?
They all determine your place in Earth
They all work by using a phone
They all work like receivers and transmitters
They all have T.V shows.
AM waves have higher frequencies and and more energy than FM
True
False
What is Earth's ionosphere?
A place of oxygen
a region of charged particles high in the atmosphere
Wavelength and frequency
a place used in carrying signals
