Fusion and Fission

1. Energy
from the
Nucleus

2. Nuclear Fission
Nuclear Fission is the process by which a
large nucleus splits into two small nuclei
and release energy.
Example:

3. Nuclear Fission
Nuclear Chain Reaction: a continuous series
of nuclear fission reactions.
• Example:

4. Two Types of Chain Reactions
1. Uncontrolled: lots of energy given off
quickly
Example: Atomic Bomb
2. Controlled: contained amount of energy
given off
Example: Nuclear Power Plants

5. Advantages of Fission
1. COST LESS than fossil fuel plants
2. DO NOT release gases
3. Lasts LONGER

6. Disadvantages of Fission
1. ACCIDENTS (CHERNOBYL)
2. Nuclear Waste
3. COST more to build

7. How a Nuclear Power Plant Works

8. How a Nuclear Power Plant Works

9. How a Nuclear Power Plant Works
1. Nuclear Chain Reaction
2. Neutrons Absorbed
3. Energy Absorbed by Water
4. Water Changed to Steam
5. Steam Turns Turbine
6. Mechanical Energy made into Electrical
Energy

10. Nuclear Fusion
Nuclear Fusion: two or more nuclei that have
small masses combine to make one larger
nucleus.

11. How does it Happen?
• Repulsion of positively charged nuclei
overcome
• HIGH TEMPS
• Plasma Removed

12. Advantages of Fusion
1. Less ACCIDENT Prone
2. Release more energy per Gram
3. Products not RADIOACTIVE

13. Disadvantages of Fusion
1. NEED MONEY FOR RESEARCH
2. Energy cannot be Generated
3. Need more energy