Into the Book of Light

How does the light travels?

• in parallel

• in a straight line

• on its own orbit

• on its own path

This situation shows that

• light travels in a straight line

• light is everywhere

• light penetrates certain objects

• light is produces by the Sun

Which of the following shows that light travels in a straight line?

• 
• 
• 
• 

What is the factor that affects the clarity of a shadow?

• Type of the light source

• Size of light source

• Size of screen

• Type of material of the object

In an experiment, the shadow was formed but not so clear. Which type of object do you think was used in this experiment?

• Coloured paper

• Manila card

• Wooden block

• A transparent plastic

What conclusion can be made from this investigation?

• Light travels in parallel

• Light travels in a straight line

• Light cannot pass through and opaque object

• Light cannot bend

How to increase the size of the shadow on the screen?

• Move the light source farther from the object

• Move the object closer to the screen

• Change the type of object used

• Move the object closer to the light source

There is no shadow formed on the screen. Why?

• The object is opaque

• The light source is too dim

• The object is transparent

• The object is translucent

This investigation is carried out to show that

• light travels in a straight line

• light can be seen through the holes

• light penetrates a transparent object

• light travels in many ways

There are two factors that affect the size of shadow. What are the factors? Tick the correct answers.

• Size of the screen

• Distance of object from the screen

• Distance of object from the light source

• Size of the light source