Rising Grade Celebration 2 Stage 5 (SCIENCE)

Objects that give off light are called Light Sources. There are two kinds of light sources, natural and man made.

Which one of the following is a natural light source?

• Moon

• Lamp

• Sun

• Mobile phone

Look at those pictures and identify the statement.

All of those are the examples of natural sources of light.

• True

• False

The bouncing of light off a surface is called the the reflection of light.

A mirror can reflect light.

Which one of the following pictures shows the angle that light will reflect off a mirror?

• 
• 
• 
• 

Objects such as mirror and moon do not give off light.

But, how can we see the moon at night?

• It is a light source

• It reflects the Sun's light

• It is close to the Earth

• It is a yellow planet

We can see mirror and other objects that do not give off light because they reflect light into our eyes.

Which description most accurately to describe how the person sees the apple?

• Light travels from the lamp, reflects off the apple, and goes into the eye.

• Light travels from the lamp to the eye.

• Light travels from the eye, reflects off the apple, and goes into the lamp.

• Light travels from the apple, reflects off the lamp, and goes into the eye.

Objects such a mirror, polished metals and glass have smooth surface.

Shiny and smooth surfaces don't reflect much light.

What do you think about those statements?

• True

• False

Tick the correct of TWO devices which use the principle of light reflection in our daily lives.

• 
• 
• 
• 

Some materials allow most of the light, allow some light, or do not allow any light to pass through them.

Select the term that best describes the picture.

• Opaque

• Transparent

• Translucent

• Absorption

A shadow is an area of darkness formed when light is totally or partially blocked.

A shadow is not always completely dark because....

• We need light to reach our eyes to see

• Some light is coming from elsewhere

• The objects does not allow light

• The materials of an object have many colours

That pictures shows the condition of a spoon in a glass of water.

What can be observed about the spoon?

• The spoon looks bent.

• The water is clearer.

• The water level rises.

• Light is refracted.