William Wallace Campbell

High school (ages 12+)
History & Culture

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/william-wallace-campbell

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. When was William Wallace Campbell born?April 11, 1862
2. When did William Wallace Campbell die?June 14, 1938
3. What is the career?Astronomer, Director of Lick Observatory, President of the University of California
4. What is the scientific specialization?Spectroscopy
5. Who was William Wallace Campbell?He was a smart American astronomer who studied stars and led Lick Observatory and the University of California.
6. What did Campbell study about stars?He looked at the light from stars, breaking it into colors to find what they are made of, how hot they are, and how they move.

Spectroscopy: A scientific discipline that studies the interaction between matter and electromagnetic radiation, used to analyze the composition and properties of celestial objects.
Radial Velocity: The velocity of an object along the line of sight between the observer and the object, determined by Doppler shifts in its spectrum.
Lick Observatory: A historic astronomical observatory owned and operated by the University of California, renowned for its significant contributions to astronomical research.
University of California: A public university system in California, one of the largest and most respected higher education institutions in the world.