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What Holds the Nucleus Together?

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Presentation on theme: "What Holds the Nucleus Together?"— Presentation transcript:

1 What Holds the Nucleus Together?
Four Nuclear Forces

2 The Four Fundamental Forces
Electromagnetic Gravity Strong Nuclear Forces Weak Forces

3 Electromagnetic Force
Holds the electrons around the nucleus by electromagnetic forces. The force is the attraction between protons (positive) and electrons (negative). The momentum of the electron causes it to move around the nucleus rather than falling straight in.

4 Gravity The force of gravity inside the atom is the weakest of all of the forces acting on the nucleus. Every process we know in the universe can be explained in terms of these fundamental forces.

5 Strong Nuclear Force The strong nuclear force attracts neutrons and protons to each other, otherwise the positively charged protons would repel each other.

6 Weak Force The weak force is weaker than both the electric force and the strong nuclear force. If you leave a solitary neutron outside the nucleus, the weak force eventually causes it to break up into a proton and an electron.

7 FORCES IN AN ATOM DESCRIPTION FORCE
Force that affects changes of particles in the nucleus Attractive interaction between objects with mass Attractive force between particles in the nucleus Attractive or repulsive force between objects with opposite charges weak force gravity strong force electromagnetic Forces within the atom WS

8 Edited from http://www. ric
Edited from by Robin Scarrell

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