1. NEW INFORMATION 

Watch the following clip at home prior to the lesson:

The Original Double Slit Experiment 

Take notes where appropriate and complete the folllowing tasks:

1. Briefly answer in your own words:  ‘What is Light?’
2. Draw a representation of the experiment modelled in the video.
3. What result would you expect to see through the slits if light behaved as a particle?

2. GOAL 

Discover the ways in which light behaves

as a wave.

2. ACCESS PRIOR KNOWLEDGE

As a class, how do you assess the quality of your answers to the Flipped Lesson Questions.

Further  question:

4. Why does an object cast a shadow?

3. NEW INFORMATION

View the presentation Young's Interferenceand summarise the slides into your workbook. 

Watch the following video:

Double Slit Interference.

4. GOAL REVISITED

Experiment groups to quickly present their findings from the practical task to the rest of the class, relating the results of their experiment back to Question 4 & 5. 

5. HOMEWORK TASK

Use the PhET Interactive Program 'Wave Interference' to complete the PhET activity worksheet (see below) modelling the behaviour of waves and light.

PhET Interactive Activity

(PDF 920Kb)

Young's Double Slit Experiment

(PDF 330Kb)