Cloud chamber

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/cloud-chamber

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 Cloud chamber?1911
2. What is the discoverer?Charles Thomson Rees Wilson
3. How It Works?Utilizes supersaturated vapor that condenses on ions created by passing charged particles
4. What is a cloud chamber and how does it show invisible particles?A cloud chamber is a sealed box that becomes supersaturated with vapor. When a charged particle passes through, it ionizes the gas, and tiny water droplets condense around the ions, forming a visible trail.
5. Why did Charles Wilson invent the cloud chamber?Wilson was studying how clouds form and discovered that charged particles can trigger condensation. He built a chamber that could make those particles visible by creating a supersaturated environment.

Supersaturated Vapor: A vapor state where the concentration exceeds the equilibrium saturation concentration, making it unstable.
Ionizing Radiation: Particles or electromagnetic waves that have enough energy to remove electrons from atoms or molecules.
Condensation Nuclei: Tiny particles (like ions or dust) on which water vapor can condense to form liquid droplets.
Antimatter: Particles that have the same mass as ordinary matter but opposite electric charge and magnetic moment.