Science Year 4 Light Part 2

Which of the following uses the principle of reflection of light?

• Glasses

• Magnifying glass

• Periscope

• Binoculars

Which of the following shows the principle of reflection of light

(Tick 2 answers)

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Which of the following shows the principle of refraction of light (tick 2 answers)

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Refraction of light means ______________

• when the light travels from two different medium and bending

• when light bouncing when hits a surface

• a polished surface which reflects an image

• allowing light but not detail to pass through

What does it mean to reflect?

• a polished surface which reflects an image

• a transparent crystal used to separate light

• to form an image by mirroring it

• to bend something, almost always light

The bending of light when it passes though a medium, such as water or a prism

• Reflection

• Refraction

• Absorbtion

• Medium

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 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

An image made by light bouncing off a surface, such as a mirror or metal spoon

• Refraction

• Reflection

• Absorbtion

• Medium

Reflection or Refraction?

• Reflection

• Refraction