Nuclear force

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/nuclear-force

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 repulsive core?Becomes repulsive at distances less than approximately 0.7 fm
2. What is the key theoretical framework?Quantum Chromodynamics (QCD) for the fundamental strong force
3. What is the nuclear force and why is it important?The nuclear force is an invisible glue that holds protons and neutrons together inside the nucleus. It overcomes the electric push between positively charged protons, keeping atoms stable.
4. How strong is the nuclear force and how far does it reach?It is extremely strong but works only over a very short distance, about 10^-15 meters (femtometers). Beyond that distance, its strength drops off quickly.

Residual Strong Force: The nuclear force between protons and neutrons, a consequence of the fundamental strong force between quarks.
Quantum Chromodynamics (QCD): The theory describing the strong interaction between quarks and gluons, the fundamental constituents of protons and neutrons.
Mass Defect: The difference between the mass of a nucleus and the sum of the masses of its constituent nucleons, representing converted energy.
Tensor Force: A component of the nuclear force that depends on the orientation of nucleon spins relative to the line connecting them.