Satellites. Satellites are objects which orbit around a planet. Although the moon is a natural satellite, most satellites orbiting the Earth are placed.

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Presentation transcript:

Satellites

Satellites are objects which orbit around a planet. Although the moon is a natural satellite, most satellites orbiting the Earth are placed there by humans for communication. This is fat Jeffery. He is a couch potato but recently he hasn’t been able to get a signal on his TV so he can’t be a couch potato any more! Let’s see what is takes for Fat Jeffrey to get his TV signal. Satellites can only send transmissions in straight lines but the Earth is round. A satellite dish on the Earth transmits a signal to a satellite. This is the uplink. One satellites sends a signal to another satellite to cross the Earth’s surface. Inside a satellite is a transponder which changes the frequency and amplifies the signal before sending it on. When the signal is close enough to the destination it can be received by another satellite dish on the ground. This is the downlink.

Dumping ground Transponder Transmitter responder

Fat Jeffery

YAY

Now Jeffery can be a couch potato!

Fat Jeffery