GED Science Practice

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Study for the GED Science Test. Study with flashcards and multiple choice questions, each question has hints and explanations. Get ready for your exam!

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What is the primary function of "radar"?

Energy that is transmitted in the form of radiation
Use again after processing
Heating a building by radiation from panels containing hot water
Measuring instrument in which the echo of microwave radiation is used to detect objects

The correct answer is: Measuring instrument in which the echo of microwave radiation is used to detect objects

The primary function of radar is to utilize microwave radiation to detect and locate objects. This is achieved by emitting pulses of microwave energy and then analyzing the echoes reflected back from objects in the environment. By measuring the time it takes for the waves to return, radar systems can determine the distance to the object. Additionally, the frequency and angle of the returning radiation can provide information about the object's speed and direction. This technology is widely used in aviation, weather forecasting, law enforcement, and marine navigation, making it a vital tool for safety and analysis in various fields. The other options describe different types of technologies or processes but do not pertain directly to the fundamental operation of radar, which centers on the detection of objects through the use of reflected microwave signals.