Sound Wave Behaviors

​ Wave Behavior

Mr. Jaquish ​

​Review: What is a medium?

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No, not your shirt size!

Multiple Select

In what ways do waves change their behavior when they encounter a new medium?

• refraction

• reflection

• absorption

• cancellation

​ Reflection

​- The bouncing back of a wave when the wave hits an object

​- An echo is a mechanical wave reflecting into the medium from which it came

​- Light waves bounce off a surface

ex: light on shiny surfaces and mirrors ​

Multiple Choice

An is sound waves that reflect off a hard surface.

• frequency

• amplitude

• echo

• tiger

Multiple Choice

A student looks at a shiny object and sees themselves. What is happening to MOST of the light that is hitting the shiny object?

• The light is being absorbed

• The light is being reflected

• The light is being transmitted

• The light is being transmitted

​- The bending of waves due to a change in speed

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- Sound waves are refracted when changing mediums (solids to liquids to gas) or travel through different temperatures

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- Light travels through a material and changes speed and is bent​

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Ex: pencil in water​

​Refraction

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Multiple Choice

When waves bend due to a change in their speed as they pass from one medium to another, we are referring to ...

• reflection

• transmission

• absorption

• refraction

Multiple Choice

When a person walks into the water at the beach, it appears that their feet are separated from their legs. This occurs because the light waves bend as they pass between air and the water. This is an example of...

• reflection of light

• transmission of light

• absorption of light

• refraction of light

​- The medium takes in the wave and the wave's energy is completed transferred

- Absorption of sound waves occurs when sound waves are absorbed into the medium

ex: soundproof walls ​

​Some text here about the topic of discussion.

Absorption ​

Multiple Choice

What type of wave behavior occurs when the energy is not transferred through, or reflected by, the medium, but instead goes into the medium?

• transmission

• absorption

• transparent

• refraction

Multiple Choice

What is the most likely reason that the school library is covered in carpet?

• So everyone can make a lot of noise

• So everyone can make a lot of noise

• to help absorb sounds to keep it quiet

• because it looks good