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Outdoors shadows are longest at sunrise and sunset.
Shadows and Reflections
Shadows and reflections show how light travels. In KS2 Science, pupils explore how light behaves when it meets different surfaces, creating fascinating effects we see every day.
1 .
Which one of the following is not a source of light?
The Sun
A fire
The Moon
A light bulb
The Moon is not a source of light; it only reflects light from the Sun
2 .
You are making shadows with a torch and one hand. What could you do to make the shadow bigger?
Use a smaller torch
Move the torch further away from your hand
Move your hand further away from the torch
Move your hand closer to the torch
Moving an object nearer to the source of light makes its shadow bigger
3 .
Light travels in a straight line. How can it be made to travel around an obstacle?
By using reflective materials to change the light's direction
By using more than one source of light
By blocking the light with another obstacle
Light can curve around an object
Mirrors can be used to change the direction of light - that's how periscopes in submarines work
4 .
What causes shadows?
Shadows are caused by the dark
A shadow appears when light cannot pass through an object
Shadows are only caused by the Sun going behind a cloud
A shadow is formed when the light changes colour to black
Shadows are dark patches caused by less light hitting them
5 .
Which of the following would reflect the most light?
An object with a crumpled surface
A smooth, shiny object with flat surfaces
A rough object with curved surfaces
A dark, shiny object with curved surfaces
A smooth, shiny object with flat surfaces, such as a mirror, will reflect the most light
6 .
How does an opaque material affect light?
It allows all light to travel through it
It allows some light to travel through it
It allows no light to travel through it
It bends the light which passes through it
Most solid objects are opaque
7 .
What happens when light hits a reflective material?
It passes completely through the material
It bounces off the material, changing direction
It is absorbed by the material
It forms a rainbow
Mirrors are very good reflectors
8 .
Light reflects off which of these materials?
A mirror
A football
Glass
Nearly every material will reflect light
Light reflects off nearly all materials - light travels from its source, reflects off an object, changes direction and enters our eyes, allowing us to see the object
9 .
Outdoors, shadows are longest at what time of day?
Sunrise and sunset
10 a.m.
Noon
Midnight
The Sun is at its lowest point in the sky at those times
10 .
Which one of the following objects is not translucent?
A sheet of glass
Tissue paper
Cellophane
Greaseproof paper
A sheet of glass is transparent - it lets light pass straight through
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