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Radar
 

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      a device that sends out radio waves and picks them up again after the waves
      strike another object and bounce back
 


Sentences:

Radar is used to help predict weather and measure waves of the ocean.

Police officers can tell how fast a car is going by using a radar device.

 


Related Links:
Birds and Radar

 

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Artwork of an airplane with radar coming out the bottom in the shape of a spotlight
This airplane uses radar to find changes in Earth's land.
Image Credit: 
NASA
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Page Last Updated: October 9th, 2014
Page Editor: Sandra May