Term 1 Week 4

E = mc²

^Homework 

• Activity 12A Mass-Energy Equivalence, p.194
• Exercise 10 Modern Physics, p.189-198 - Workbook - This will be assessed.

Nuclear Reactions

E = Δmc²

Radioactive Isotopes

PhET Applications:

• Nuclear Fission https://phet.colorado.edu/en/simulation/legacy/nuclear-fission
• Alpha Decay https://phet.colorado.edu/en/simulation/legacy/alpha-decay
• Beta Decay: https://phet.colorado.edu/en/simulation/legacy/beta-decay
• Models of the Hygrogen Atom https://phet.colorado.edu/en/simulation/legacy/hydrogen-atom
• Photoelectric Effect https://phet.colorado.edu/en/simulation/legacy/photoelectric

Nuclear Fission

Nuclear Fusion

Nuclear Power Station

Term 1 Week 3

Photoelectric Effect HW Activity 11B Question 2

Answers here 

https://docs.google.com/spreadsheets/d/1EaI_cdL1JgvaCk-aJgZrT4daDv1da5AB3ZcRN_XutiM/edit#gid=0

Atomic Line Spectra

Hydrogen Emission and Absorption Spectra for the visible Balmer Series

Hydrogen Emission Spectra for each Series and where they come from

Working with the Rydberg Equation

1/λ = R(1/S² – 1/L²)

λ: Wavelength (m)

R: Rydberg Constant

R = 1.097 x 10⁷ m^-1

S: Series Number

L: Line Number

L > S

Bohr Moderl Of Hydrogen Atom

Homework

• Activity 11C, p. 183 Text. Spectral Lines
• Activity 11D, p. 188 Text. Atomic Energy Levels

Nuclear Reactions

Conservation of Energy-Mass E = mc2

Term 1 Week 2

Photoelectric Effect

The concept of the Photoelectric Effect was introduced and how light modeled as a particle can explain this, while light modeled as a wave cannot.

The above video explains the Photoelectric Effect using a PhET application which I encourage you to use and experiment with.

This can be found at:

 https://phet.colorado.edu/en/simulation/photoelectric

Planck's Constant h = 6.63 x 10^-34 Js

Energy of a Photon E = hf

Threshold Frequency f_{o ,} the frequency of incident photons that have an energy equal to the work function of the metal

Work Function φ = energy required to free an electron from a specific metal (J)

Maximum Kinetic Energy, E_k,  of a freed electron by an incident photon:

E_k = hf - φ

Homework: Activity 11B from your textbook

Term 1 Week 1

Review of Waves and Light as a Wave

Reviewed fundamentals of waves:

• Transverse Waves (e.g. light waves)
• Longitudinal Waves (e.g. sound waves)
• Amplitude - A, x, y (meters - m)
• Wavelength - λ (meters - m)
• Period - T (seconds per cycle - s)
• Frequency - f (Hertz {cycles per second} - Hz)
• Angular Velocity - ω (radians per second - rad/s)
• Wave Speed - v (Meters per second - m/s)

Reviewed Two Point Source Interference from last year and introduced the idea of Multiple Point Source Interference

White Light is made up of different frequencies of Electromagnetic Waves