1. Bell Work  Turn In – Model Evaluations Ws  Pick Up Sheets For Today  Complete The Bell Work Sheet  Reminders o Relearn/Redo Application Is Due Tomorrow o Science Reasoning Assessment Is Next Wed

2. Unit Goal  Develop models to illustrate the changes to atoms and the energy released during the processes of fission, fusion, and radioactive decay  Today – Understand the process of fission & fusion by o Analyzing Diagrams o Viewing And Discussing The Process o Creating A Venn Diagram Illustrating The Common & Unique Aspects Of These Processes Learning Target

3. Fission Fission – process in which a larger nucleus splits into two smaller nuclei with the release of energy as heat and neutrons HOW SHOULD WE DEFINE THIS PROCESS?

4. Fission How Does The Process Of FissionThe Process Of Fission o Change Composition Of Atom o Release Energy o Obey The Laws Of Conservation Of Matter & Energy

5. Fission Process 1 st - Strong force overrides the EMF and holds the nucleus together, the binding energy creates the nuclear force ENERGY IS A FORCE! WHAT IS THE COMPOSITION OF THE NUCLUES? HOW DOES THIS CREATE ENERGY IN THE NUCLEUS? ENERGY IS A FORCE! WHAT IS THE COMPOSITION OF THE NUCLUES? HOW DOES THIS CREATE ENERGY IN THE NUCLEUS?

6. Fission Process 2 nd - Nucleons increase and nuclear binding energy decreases 3 rd - EMF causes nucleons to repel, two smaller lobes form and nucleus starts to split HOW DOES THE COMPOSITION CHANGE? HOW DOES THIS IMPACT THE ENERGY IN THE NUCLEUS? HOW DOES THE COMPOSITION CHANGE? HOW DOES THIS IMPACT THE ENERGY IN THE NUCLEUS?

7. Fission Process 4 TH – Atom splits into 2 smaller pieces, nuclear force is released as heat and ionizing radiation 5 th – Strong force binds smaller groups of nucleons together, unneeded neutrons leave and EMF makes the new atoms repel HOW DOES THE COMPOSITION CHANGE? HOW DOES THIS IMPACT THE ENERGY IN THE NUCLEUS? HOW DOES THE COMPOSITION CHANGE? HOW DOES THIS IMPACT THE ENERGY IN THE NUCLEUS? Unstable Radioactive Daughters Are Likely Unstable Radioactive Daughters Are Likely

8. Fission Process 6 TH – Neutrons get absorbed by and split other atoms, chain reaction occurs and energy release grows exponentially until fuel “fissionable atoms” runs out FISSION IS ANOTHER EXPONENTIAL PROCESS! EXPLAIN! HOW DOES THIS EXPONENTIAL NATURE DIFFER FROM DECAYS? WHAT STARTS THIS PROCESS? WHAT WOULD END THIS PROCESS? FISSION IS ANOTHER EXPONENTIAL PROCESS! EXPLAIN! HOW DOES THIS EXPONENTIAL NATURE DIFFER FROM DECAYS? WHAT STARTS THIS PROCESS? WHAT WOULD END THIS PROCESS?

9. Fission Reaction Equations & Laws

10. Energy of Parent + Energy Released = Energy Of Daughters

11. Fission Applications Harnessing The Energy From Fission Reactions 1. Nuclear Weapons (atomic bomb) utilizes an uncontrolled fission chain reaction

12. Fission Applications Harnessing The Energy From Fission Reactions 1. Generate Electricity = Nuclear Power Plant utilizes an controlled fission chain reaction

13. Fusion Fusion – process in which two smaller nuclei join to release energy as heat and create a single larger nucleus HOW SHOULD WE DEFINE THIS PROCESS?

14. Fusion How Does The Process Of FusionThe Process Of Fusion o Change Composition Of Atom o Release Energy o Obey The Laws Of Conservation Of Matter & Energy

15. Fusion Process 1 st – The EMF causes the nuclei to repel ATOMS TEND TO STAY AWAY FROM EACH OTHER, WHY? ATOMS TEND TO STAY AWAY FROM EACH OTHER, WHY?

16. Fusion Process 2 ND – High temperatures speed up and give atoms energy to go against repulsion of EMF and collide together WHAT MAKES ATOMS COLLIDE? WHAT MAKES ATOMS COLLIDE?

17. Fusion Process 3 rd – Nuclear force is released as heat and ionizing radiation 4 th – Strong force binds a larger amount of nucleons together forming a single bigger atom and a neutron HOW DOES THE COMPOSITION CHANGE? HOW DOES THIS IMPACT THE OVERALL NUCLEAR ENERGY? HOW DOES THE COMPOSITION CHANGE? HOW DOES THIS IMPACT THE OVERALL NUCLEAR ENERGY?

18. Fusion Reaction Equations & Laws

19. Energy of Parents + Energy Released = Energy Of Daughter

20. Fusion Applications Harnessing The Energy From Fusion Reactions 1. Nuclear Weapons (hydrogen bomb)

21. Fusion Applications 2. Utilizing Energy of stars = heat & light 3. Generating Electricity = Future Fusion Power Plant

22. Energy Comparison How Does Energy From Radioactive Decay Compare To Fission & Fusion In Terms Of Amount & Type? WHY! THINK ABOUT! Ionizing Radiation Effects Nuclear Binding Energy THINK ABOUT! Ionizing Radiation Effects Nuclear Binding Energy

23. Energy Comparison

24. Comparing Nuclear Processes Include The Following Definition Parent material Daughter material Isotope / Element Stable / Radioactive Large / Small One / Multiple Include The Following Reaction Process / Forces Natural / Man Made Ability To Alter/Control Amount Energy Released Types Of Energy Released Exponential Nature Laws Obeyed Applications

25. Homework Sciences Reasoning Assessment = Wed 23 rd