Shadow Proportions

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

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

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

When the sun gets higher in the sky, shadows get ______.

• longer

• gone

• shorter

• darker

When the sun gets lower in the sky, shadows get______.

• longer

• gone

• shorter

• darker

Shadows are longest during _______.

• morning and evening

• noon

• night

Shadows are shortest around______.

• morning and evening

• noon

• night

When was this picture most likely taken?

(Hint: think about the shadow's length)

• morning or evening

• night

• noon

• afternoon