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Download Universal Forces - Waconia High School
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Universal Forces • 12.4 Notes Electromagnetic Forces • Consist of Electricity and Magnetism • Electric Forces – act between charged objects or particles. (protons & electrons) • Magnetic Forces – act on certain metals. Magnets have poles with opposite charges. Electromagnetic Forces • Acts on charged particles like Protons and Electrons Nuclear Forces • Forces within an atom • Strong Nuclear Force – hold protons together inside the nucleus – Is “strong” because like charges repel. It takes a lot of force to hold a bunch of (+) charges together. • Weak Nuclear Force – holds the atom together. Strong Nuclear • Holds Protons and Neutrons together • Works over a very short distance • Holds Quarks together Weak Nuclear • • • • Works with radioactive decay Works over a very short distance Acts on all particles Source of sun’s power Gravitational Forces • Newton’s Law of Universal Gravitation. • All object in the universe are attracted to each other by the force of gravity. • The force depends upon the masses of the objects and the distance between the objects. Gravity between Earth and Moon causes ocean tides
