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Transcript

QUIZ

Q.1) What system did the US navy use?

A= Specialized telephone system

Q.2) How do we receive pictures from space?

A= The picture is taken, turned into packets of ones and zeros, sent to a transponder, and then turned into a radio signal. An antenna on the space craft beams the signal to earth, we pick up the signal with a huge antenna, and turn the radio signal back to ones and zeros, and then back to a picture.

Q.3) How can this help us?

A= It can give us early warning signs of floods

How does this help?

This also can give us early warnings of floods, that can help save lives.

How satellites communicate.

For example, a camera on a satellite takes a picture. That data is sent to a computer that turns it into packets of ones and zeros. This is then sent to a transponder, that codes it into a radio signal. The antenna on the space craft beams the signal through space, and is picked up by a huge satellite on Earth. A computer decodes the signal, and is then turned into the origional picture taken in space.

How do we communicate with submarines?

One method of communicating with submarines is through a specialized telephone system to communicate underwater.

Signals.

U.S. Navy submarines use this system to communicate underwater. The telephone sends and receives sound waves. Modems convert digital data into special underwater sound signals that can be transmitted between two submerged submarines. Underwater data links can also be combined with satellite data links to provide data from instruments on the seafloor to scientists ashore.

How does this help?

One way this is usefull is that it can warn scientists above shore of early coming tsunamis.

How do we communicate with submarines and satellites?

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