Fission= to splitFission= to split

In Biology, tissue grows by the division of cells

ReviewReview

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 How does a small amount of matter contained in these bombs cause……these bombs cause……

Nuclear Bombs of 1945 known as “fat man” and “little boy”

this huge release of energy?this huge release of energy?

https://www.youtube.com/watch?v=-22tna7KHzI

(nuclear explosion)

Nuclear FissionNuclear Fission

https://www.youtube.com/watch?v=mBdVK4cqiFs

(fission explained)

https://www.youtube.com/watch?v=jk6Hm1QoDYY

(forces explained)

Chain ReactionChain Reaction1) For fission to occur,

which force overpowers the other?

2) One _____starts the fission

3) ____ more neutrons are produced when Uranium fissions

https://www.youtube.com/watch?v=vjqIJW_Qr3c

(mouse traps)

The electromagnetic overpowers the strong force

Neutron

Three

Mass-Energy EquivalenceMass-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 EquivalenceMass-Energy Equivalence

https://www.youtube.com/watch?v=N7C14UIKuv8

(E=mc²)

Nuclear FusionNuclear Fusion

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 protonso (repulsive)o Extremely high temperatures can provide start-up energy.

FusionFusion

Stars are giant nuclear reactors

Many nuclei combine together to make a different, larger element

Nuclear fusion fuels stars, converting Hydrogen into Helium

Cold FusionCold 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”Cold Fusion…the movie “The Saint”

https://www.google.com/#q=val+kilmer+youtube+the+saint+fusion