Oil drop experiment

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/oil-drop-experiment

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 Oil drop experiment?The elementary electric charge (e) and proved its quantization
2. What is the discoverers?Robert Millikan and Harvey Fletcher
3. What is the year of publication?1913
4. What was the oil drop experiment about?It showed that electric charge is made of tiny, equal pieces called electrons.
5. How did scientists make the oil droplets move?They used two metal plates close together and turned on electricity to push the droplets up or let them fall.

Charge Quantization: The principle that electric charge exists only in discrete multiples of a fundamental unit, the elementary charge.
Elementary Charge (e): The magnitude of the electric charge carried by a single proton or electron, approximately $1.602 imes 10^{-19}$ coulombs.
Terminal Velocity: The constant speed that a freely falling object eventually reaches when the resistance of the medium through which it is falling prevents further acceleration.
Stokes' Law: A law describing the drag force on a sphere moving slowly through a viscous fluid, used to calculate the mass of the oil droplets.