Term 2 Week 10 2016

Homework

• Ex 3C, Lens, p. 56-63
• Ex 3A, Curved Mirrors, p. 37-44

Ray Diagram

Comparing Lens & Mirror

Using Descartes formula for the Lens & Mirror

Term 2 Week 9 2016

Homework

• Ex 3C, Lens, p. 56-63

Lens Ray Diagrams

• PhET applet
• Simbucket applet

Convex Lens - Converging Lens

Concave Lens - Diverging Lens

Convex - Concave Lens (general)

Convex - Concave Lens (detail)

Ray Diagram

Term 2 Week 8 2016

Homework

• Ex 5A History of Atomic Models This should be complete by now
• Ex 5B Radioactive Decay and Half Life - This should be complete by now
• Ex 5C Nuclear Reactions and Nuclear Energy Calculations - due this week

You will be assessed in Phy 3.5 Atomic & Nuclear Physics AS 91172 this week Thursday 23rd June 2016

The pre-aligned Standard Covering: 

1. Historical models of the Atom; 
2. Half-Life; 
3. but not Nuclear Reactions 

can be found in the links below:

90256 Demonstrate understanding of atoms and radioactivity 2007 - Questions - Answers

90256 Demonstrate understanding of atoms and radioactivity 2008 - Questions - Answers

90256 Demonstrate understanding of atoms and radioactivity 2009 - Questions - Answers

90256 Demonstrate understanding of atoms and radioactivity 2010 - Questions - Answers

90256 Demonstrate understanding of atoms and radioactivity 2011 - Questions - Answers

Naturally Occurring Nuclear Fission Reactor

Term 2 Week 7 2016

Homework

• Ex 5A History of Atomic Models This should be complete by now
• Ex 5B Radioactive Decay and Half Life - This should be complete by now
• Ex 5C Nuclear Reactions and Nuclear Energy Calculations - due next week

Field Trip to Canterbury University for Rutherford's Den and Radioactivity Lab, this Thursday & Friday 16th -17th June 2016

You will be assessed in Phy 3.5 Atomic & Nuclear Physics AS91172 next week Thursday 23rd June 2016

Term 2 Week 6 2016

Homework,

• Ex 5B Radioactive Decay and Half Life - This should be complete by now
• Ex 5C Nuclear Reactions and Nuclear Energy Calculations - due next week

Nuclear Fusion in the Sun

Binding Energy comes from the change in mass from individual nucleons to being combined into a nucleus. This is energy lost by the nucleons joined together in a nucleus and must be returned in order to separate the nucleons

E = Δmc2

Mass Energy Equivalence

Nuclear Reactions

Fission Fusion and Radioactive Decay

Fission & Fusion

Term 2 Week 5 2016

Homework

• Ex 5A, P. 151-155, Models of the Atom

Parts of the Atom

Isotopes

Isotopes are versions of an atom or an element that have the same number of protons, but different numbers of neutrons

Radioactive Decay

Alpha, Beta & Gamma Radiation

• Alpha particles are emitted by a larger nucleus that has too many Protons
• Beta particles are emitted by a nucleus that has too many Neutrons
• Gamma photons are emitted by a nucleus that has too much Energy (is in an exited state)

• PhET Alpha Decay app can be found here
• PhET Beta Decay app can be found here

Alpha Decay

Beta Decay

Radiation

Types of Radiation

Half-Life

Half-Life Explanation

Half-Life Calculations

Half-Life Formula

A = Ao(½)n

A: Amount of radioactive substance now present

Ao: Amount of radioactive substance originally present

n: Number of Half-Lives that have past

If you can understand the maths for using the formula above, you will be able to pinpoint your answers instead of estimating them using a graph.

You will need to be able to use the 3rd Log Law to solve for half lives.

Term 2 Week 4 2016

Homework

Complete Ex 3B, p.47-52 Light Refraction

Models of the Atom

Thomson's Plum Pudding Model

Rutherford's Gold Foil Experiment