Modeling Waves Through Various Mediums

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Modeling Waves Through Various Mediums

This information is posted in STEMscopes as well as a hard copy provided in your packets.

Some waves need a medium to travel.

• Both the water ripples and rays of sunlight are examples of waves that transfer energy.

• Waves such as water must transfer energy through a MEDIUM; they are called MECHANICAL WAVES. 

• Waves such as sunlight can transfer energy through empty space and do not need a medium; they are called ELECTROMAGNETIC WAVES.

Sound Waves

• Mechanical Waves

• Sound waves, like other mechanical waves, transfer energy through a substance called a medium

• Particles in a medium become disturbed and pass on this disturbance to the next one, and so on. 

• NOTICE: particles move back and forth but return to their original position "ORIGIN"

Sound Waves

• Sound waves can travel through solids, liquids, or gases

• Notice the difference in speed between the different materials.

• What types of materials does sound move fastest through?

Multiple Choice

Sound waves are an example of what type of wave?

• Mechanical

• Electromagnetic

Multiple Choice

Sound waves (mechanical waves) require a ______ to pass through.

• vacuum

• medium

• reflection

• electromagnetic wave

Multiple Choice

When a mechanical wave is sent, ______ are sent through the particles in the mediums. These particles then move back and forth sending energy throughout the medium.

• reflections

• electromagnetic waves

• vibrations

• visible lights

Multiple Choice

Sound waves move the fastest through....

• gases

• liquids

• solids

A source creates a wave, not a medium. 

• Waves are created when a source (force) generates a vibration. 

• Vibrations in materials set up wavelike disturbances that spread away from the source of the disturbance. 

The speed of sound depends on the medium.

• As a source of energy begins the vibration of the wave, the matter around it is disturbed. 

• Each disturbance is passed to the matter next to it, so that energy flows away from the source in a wave. 

• Remember: waves transfer energy, not matter. 

Transverse Waves

• Electromagnetic Waves are transverse waves

• Some mechanical waves behave as transverse waves as well.

• mechanical transverse waves are transmitted only through solids. SUCH AS EARTH QUAKES AND WATER WAVES.

Longitudinal Waves

• "Compression Waves"

• Longitudinal waves travel in the same direction as the wave energy compresses and expands particles. 

Multiple Choice

Mechanical waves can be both longitudinal and transverse.

• True

• False

Multiple Choice

Longitudinal waves can be identified by their...

• compressions

• up and down movement

Multiple Choice

Earthquakes and water waves are an example of ______ waves.

• Transverse

• Longitudinal

Multiple Choice

Sound waves are an example of ______ waves.

• Transverse

• Longitudinal

Video

Please Watch this video. It is also posted under the comments for the assignment on google classroom.

https://www.youtube.com/watch?v=q9ezMbDpIHI&feature=youtu.be

PLEASE COMPLETE THIS IN YOUR NOTEBOOK

PLEASE COMPLETE THIS IN YOUR NOTEBOOK