1. Zaira antunez Nov.2,2010 5 th period

2. One animal that uses infrasound is the tiger. Some sounds the tigers make are inaudible for human to hear. It is mainly used to make there rivals go away. As well as for attracting there mates.

3. It is used for looking inside the human womb. To see what is cared in it. And also used to provide pictures from the fetuses. Or to capture the seize of the womb.

4. Bats use ultrasound to detect there prey. Most of the bats can detect sound as high as 100 kHz. No higher then that.

5. Ultrasound :#3 Most whales have