NGSS.MS-PS4-2

As light waves pass through openings in a barrier or around the edges of an object, the waves change direction or

• are absorbed.
• diffract.
• reflect.
• refract.

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NGSS.MS-PS4-2

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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NGSS.MS-PS4-2

When a pencil is put into a glass of water, it appears to be broken? Why does the pencil look broken?

• because the shiny glass reflects light
• because the water separates light into many colors
• because the part of the pencil outside the water casts a shadow
• because light rays are bent when they pass from air into water

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NGSS.MS-PS4-2

It can travel through solids only

• Love waves

• Rayleigh waves

• Primary waves

• Secondary waves

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NGSS.MS-PS4-2

Which images are opaque?

• A & C

• A,C,E, & F

• D, E, & F

• A & E

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NGSS.MS-PS4-2

The bending of light as it goes through a different material is

• reflection

• refraction

• absorb

• diffraction

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NGSS.MS-PS4-2

Ray B represents __.

• reflection

• refraction

• transmission

• absorption

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NGSS.MS-PS4-2

The picture shows a sound wave traveling through a liquid. Which picture below shows how the sound wave will change when it enters a gas?

• 
• 
• 
• 

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NGSS.MS-PS4-2

Which explains why when the waves pass each other part of the rope does not move?

• the waves interfere destructively and cancel each other out

• the waves interfered constructively and produced a trough

• the waves reflected off each other and went in the othe direction

• the waves absorbed the energy from each other and cancelled out

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NGSS.MS-PS4-2

Why do objects appear the color they do?

• Most light wavelengths are transmitted while some light wavelengths are reflected

• Most light wavelengths are reflected while some light wavelengths are absorbed

• Most light wavelengths are reflected while some light wavelengths are transmitted

• Most light wavelengths are absorbed while some light wavelengths are reflected

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NGSS.MS-PS4-2