refraction of light science year 4

How does light behave as it enters these mediums?

• continue its path as straight line.
• bends toward the normal
• bends away from the normal
• reflects

Light bending as it passes from one medium (object) to another is...

• Refraction
• Reflection

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NGSS.MS-PS4-2

What is this image showing?

• Reflection
• Refraction
• The law of reflection
• Concave Mirror

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Why does the lower part of the child appear so much different in size from the upper part?

• The light rays that travel through water and then into air are refracted.
• The light rays that travel through water and then into air are enlarged.
• The light rays that travel through air and then into water are reflected.
• The light rays that travel through air and then into water are reduced.

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Refraction is when light__________.

• Is bounced by an object or material.

• Changes speed as it travels in different materials which causes bending.

• When light speeds up to over 300,000 km/s

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Light emerging from water to air will bend ______ due to the change of speed as it crosses the boundary.

• toward the normal

• away from the normal

• along the normal

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Light travels through air, water, glass and many other materials. What path does it travel to get from one place to another?

• sideways

• back and forth

• straight

• up and down

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Light changes speed as it travels through various mediums.  What are examples of mediums that light can travel through.

• snow and ice
• air and water
• cloth and wood
• glass and wood

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NGSS.MS-PS4-2

The pictures shows what a student observed when he looked through a hand lens at a penny.
What happens to light passing through a hand lens that makes the image of the penny appear larger? The light is-

• absorbed
• reflected
• refracted
• stopped

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NGSS.MS-PS4-2

This shows the phenomenon known as....

• reflection
• refraction
• mirrors
• focal point

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