Science Lesson A: Behaviour of light through media

Subject: Science (Physics)
Location: Physics Lab
Conducted by: Mr Tan Hoe Teck

A) Lesson Objectives:
Content/Knowledge
Students will know...
  1. The terms used for reflection, such angle of deviation for 1 and 2 mirrors
  2. Reflection can occur if light travels from a denser to a less dense medium
  3. The application of total internal reflection is related to the use of optical fibres in telecommunication, water fountain shows and diamonds
Skills
Students will be able to ...
  1. Set up and carry out an experiment related to multiple reflections
  2. Measure angles using a protractor
  3. Plot a simple graph

B) Lesson Activities 
Worksheet/Reflection
1) Laser through a water container:


Thinking Routine
Questions
Write down your responses
See
What do you see?

Observe the images of the light source.

What are their characteristics?





Think
What do you think will happen if the stream of water is longer?


Wonder
What does it make you wonder?

How can we transmit information if this method works?



2) Laser through a diamond crystal:


Thinking Routine
Questions
Write down your responses
See
What do you see?

Observe the images of the light source.

What are their characteristics?

Think
What is it that makes the diamond sparkle?


Wonder
What does it make you wonder?

How can you increase the sparkle?



3) How the angle of the light beam depends on the angle between 2 mirrors:


Thinking Routine
Questions
Write down your responses
See
What do you see?
Observe the images of the light source.
What are their characteristics?




Think
What do you think will happen if you increase the angle of incidence?




Wonder
What does it make you wonder? How can we create multiple images?