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| Q. |
Bats can sense obstacles because they produce – |
| A. | supersonic sound waves |
| B. | ultrasonic sound waves |
| C. | infrasonic sound waves |
| D. | micro sound waves |
| Answer» B. ultrasonic sound waves | |
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Explanation: The reason that bats use ultrasound is because it has such a high frequency and it has a low diffraction or it bends less. They use this sound to do a couple of things like to catch their prey and also just to get around. The method of doing such tasks is called echolocation. They make a sound and wait for it to bounce back to hear it. If they hear it come faster in a particular area than the rest of the sounds then they know that something is near. |
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