Grade 4 Light Energy

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

The picture shows light being ________________.

• Refracted
• Absorbed
• Split
• Reflected

_________________ is the change in direction of light waves as the waves pass from the air into water.  The light appears to bend.

• Reflection
• Refraction
• Defraction
• Mirror Image

Select the term that best describes the picture

• Transparent

• Translucent

• Opaque

• Prism

Which description most accurately describes 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.

Describe how the size of a shadow changes as an opaque object is moved further away from the light source of a ray of light.

• The shadow gets bigger.

• The shadow gets smaller.

• The light is reflected.

• There is no shadow to begin with.

Lets almost all light through so things can be easily seen.

• Transparent

• Translucent

• Opaque

• None of the above

Shadow is formed on the ___________ side of the source of light.

• left

• front

• right

• opposite

The colour of the shadow depends on the colour of ___________.

• Waves

• Heat

• Light

• Capactiy

The shadow gets ___________ when screen is moved away.

• smaller

• darker

• larger

• no shadow