Medical ultrasound

High school (ages 12+)
Science & Technology

Name:

Date:

Step 1 · Read the article

Open the article and read it at the level above. Then answer the questions below in your own words.

https://smallwhale.org/articles/medical-ultrasound

Write what each word means, using the article.

Do not copy the article. Write two things you learned, the way you would explain them to a friend.

Answers below are taken from the article’s stored facts, so they match what the student read.

1. What is the operating frequency range?Typically operates between 2 MHz and 18 MHz
2. What is the speed of sound in tissue?Approximately 1540 meters per second
3. What is medical ultrasound and how does it look inside the body?It uses high‑frequency sound waves that bounce off tissues and the echoes are turned into pictures called sonograms.
4. Why is ultrasound safe for babies during pregnancy?It doesn’t use ionizing radiation, so it can safely show the baby’s growth and check for any problems.

Piezoelectric Effect: The ability of certain materials to generate an electric charge in response to mechanical stress, and vice versa.
Acoustic Impedance: A measure of a material's resistance to the passage of sound waves, influencing echo reflection.
Sonogram: The visual image produced by medical ultrasound imaging.