Question

How is it that bats are able to fly at night without colliding with other objects?

Answer 1

Bats search out prey and fly at night by emitting and detecting reflections of ultrasonic waves.  

Bats emit high frequency ultrasonic squeaks while flying and listen to the echoes produced by reflection of their squeaks from the obstacle, prey or object in their path. From the time taken by the echo to be heard, bats can determine the distance of the object and can avoid the object by changing the direction without colliding with it.

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Answer 2

They generate ultrasonic squeaks or react to the echoes created by reflecting their squeaks from either the obstacles or objects through their way or path.

Explanation:

• Bats can fly through the night without colliding with some other objects because they generate ultrasonic squeaks or react to the echoes created by reflecting their squeaks from either the obstacles or objects through their way or path.
• Bats can measure the object's distance in their way or path and avoid (ignore) it by adjusting the direction, using the time required by the echo to be noticed after the obstacle reflects.

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