How does an ultrasound produce an image of a fetus in the mother’s uterus?

An ultrasound can produce the image of a fetus by using waves that are labeled as "ultrasound waves" or in ultrasonic frequency.

This may seem like an odd concept but you should note that everything we see and hear is made up of waves, like light and sound, that are at different frequencies.

The reason why there are different color lights are because there are different type of frequencies.  Some frequencies, such as ultrasonic, we can not see with our human eye.

A. The mesosphere has a lower temperature than the thermosphere. 

B. The mesosphere has a higher temperature than the thermosphere. 

C. The temperature of the mesosphere is the same as the thermosphere. 

D. The altitude has no impact on the temperature of the atmospheric layers


Are ANY of these one of the answers on your question? I had the same question a week ago, and if its the same answers to the question, I can help you :)