Activities

 

ACTIVITY 1 

  

The “Silver Egg” Demo

Use tongs to hold a normal egg in a candle flame until it is covered with soot.

Drop the soot-covered egg into a glass of water.


A considerable amount of the light traveling through the water is totally internally reflected when it encounters an air layer that adheres to the soot.

Since most of the light is reflected, the egg appears to have a silvery, shiny surface.

The egg will appear silvery until the air dissolves into the water, which only takes a couple of minutes.

Look closely to observe what happens to the small fraction of light that passes through the air layer.

ACTIVITY 2

CROSSWORDS

Instructions: 

  

1.    Work in groups of four.

2.    Discuss and solve the crossword puzzle below.

3.    One student from each group gives one answer and followed by the other groups.

CLUES:

1.    _______ lens is also known as converging lens.

2.    The astronomical telescope consists of an ___________ lens and eyepiece lens.

3.    The final image of a telescope is formed at __________.

4.    What is the usage of this formula:

5.    This instrument is used to view  a distant object.

6.    Image can not be seen on the screen.

 

ACTIVITY 3

Make your own compass
Do try this at home

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ACTIVITY 4

Make your own cartesian diver
Do try this at home

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ACTIVITY 5

Make your own step-up transformer
Do try this at home

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