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/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. Who discovered Ultrasound?1880 by Pierre and Jacques Curie
2. What is the frequency range in use?Medical imaging typically uses 1-20 MHz; therapeutic ultrasound can use higher intensities
3. What is the key medical advancements?Development of real-time imaging in the 1950s-60s by Ian Donald
4. What is ultrasound and how does it help doctors see inside the body?Ultrasound uses high‑frequency sound waves that bounce off tissues to create pictures of organs. The waves are safe and don’t use X‑rays.
5. Why do doctors use ultrasound to check babies in the womb?Ultrasound is safe for babies because it doesn’t use harmful radiation. It lets doctors see the baby grow and check its health.

Piezoelectric Effect: The generation of electric charge in response to applied mechanical stress, and vice versa.
Acoustic Impedance: A measure of a material's resistance to the passage of sound waves, influencing reflection and transmission.
Doppler Effect: The change in frequency of a wave in relation to an observer moving relative to the wave source, used to measure blood flow.