Echolocation and Ultrasound Concepts

Front

Which mammal uses sonar to detect objects in the dark?

Back

Bat

Front

What is ultrasound mostly used for?

Back

Medical use

Front

Ultrasound occurs at frequencies above 20,000 Hz.

Back

True

Front

A(n)_________________________ is a reflected sound wave.

Back

echo

Front

Why do ultrasound technicians apply gel before scanning?

Back

To help sound waves travel into the body.

Front

You cannot hear ultrasound because it is:

Back

high frequency

Front

What is being pointed at in the ultrasound? HINT: Link between the baby and the mother

Back

Placenta

Front

What is ultrasound?

Back

Sound waves above the range of human hearing

Front

What is the range of normal human hearing?

Back

20 Hz to 20,000 Hz

Front

What is ultrasound mostly used for?

Back

Medical use