Strong nuclear force

Definition

The strong nuclear force is one of the four fundamental forces of nature, responsible for holding protons and neutrons together in an atomic nucleus. It operates at extremely short ranges, on the order of femtometers (10^-15 meters).

5 Must Know Facts For Your Next Test

1. The strong nuclear force is the strongest of the four fundamental forces.
2. It is crucial for the stability of atomic nuclei, overcoming the repulsive electromagnetic force between positively charged protons.
3. The range of the strong nuclear force is approximately 1 to 3 femtometers.
4. This force is mediated by particles called gluons, which act between quarks inside protons and neutrons.
5. In stars like the Sun, the strong nuclear force enables nuclear fusion, converting hydrogen into helium and releasing energy.

Review Questions

• What role does the strong nuclear force play in atomic nuclei?
• Why is the strong nuclear force essential for nuclear fusion in stars?
• At what range does the strong nuclear force operate?

Related terms

Electromagnetic Force: A fundamental force responsible for interactions between charged particles at all distances.

Nuclear Fusion: The process where lighter atomic nuclei combine to form a heavier nucleus, releasing energy.

Gluon: A type of elementary particle that acts as a mediator for the strong nuclear force between quarks.