Fission= to split In Biology, tissue grows by the division of cells.

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Section 2: Nuclear Fission and Fusion

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Presentation transcript:

Fission= to split In Biology, tissue grows by the division of cells

Review 1) What is fission? 2) What is fusion? 3) Which 2 forces oppose each other during nuclear fission?

How does a small amount of matter contained in these bombs cause…… Nuclear Bombs of 1945 known as “fat man” and “little boy”

this huge release of energy? (nuclear explosion)

Nuclear Fission (fission explained) (forces explained)

Chain Reaction 1) For fission to occur, which force overpowers the other? 2) One _____starts the fission 3) ____ more neutrons are produced when Uranium fissions atch?v=vjqIJW_Qr3c atch?v=vjqIJW_Qr3c (mouse traps) The electromagnetic overpowers the strong force Neutron Three

Mass-Energy Equivalence The key to understanding why a large amt of energy is released in nuclear reactions is..the equivalence of mass and energy Mass stores energy..great amounts..which can be released if and when the mass decreases E= mc²

Mass-Energy Equivalence (E=mc²)

Nuclear Fusion

- Energy released when two light nuclei combine or fuse However, a large amount of energy is required to start a fusion reaction: o Need this energy to overcome ________ forces of protons o (repulsive) o Extremely high temperatures can provide start-up energy.

Fusion Stars are giant nuclear reactors Many nuclei combine together to make a different, larger element Nuclear fusion fuels stars, converting Hydrogen into Helium

Cold Fusion Cold fusion is a hypothetical type of nuclear reaction that would occur at, or near, room temperature, compared with temperatures in the millions of degrees that are required for "hot" fusion

Cold Fusion…the movie “The Saint” he+saint+fusion he+saint+fusion