Mr. Bradley's Waves lesson

Objectives: Learn the role waves play in our daily lives.

Learn the parts and shapes of waves.

Model transverse and longitudinal waves.

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Mr. Bradley's Waves

Multiple Choice

Water waves and light waves are both examples to ___

• Longitudinal Wave

• Transverse Wave

• Frequency wave

• Sound Wave

Multiple Choice

Carries energy from one place to another

• Waves
• Amplitude
• Frequency
• Crest

Multiple Choice

The highest point of the transverse wave is called _____

• trough

• amplitude

• crest

• wavelength

Multiple Choice

The lowest point on the transverse wave is called_______

• trough

• crest

• wavelength

• frequency

Multiple Choice

In a transverse wave, particles vibrate perpendicular to the direction that the wave is traveling

• True

• False

• none of the above

Multiple Choice

What do all waves transmit

• energy

• matter

• frequency

• water

Multiple Select

The wavelength can be measured from ( check all that apply)

• crest to crest

• crest to trough

• trough to crest

• trough to trough

In this section you will learn about water waves, sound waves, and light waves.

Why learn about waves?

A ball floating on the water is a good example of the difference between a wave and ordinary harmonic motion. If you poke a ball, it moves up and down. The oscillating ball creates a wave on the surface of the water that spreads outward, carrying the oscillation to other places.

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Waves carry information and energy.

We use waves to carry information and energy over great distances.
The sound wave that travels through the air carries information about the vibration of the string from the instruments to your ear. Your ear hears the vibration of the string from the instrument to your car. Your ears hears the vibrations as music.

-The stoplight that you see with your eyes is a wave.

-The sound that you hear are waves.

-The ripples in a puddle of water are waves to.

Waves are around us

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Have a nice day. Happy teaching!

Transverse Waves

Longitudinal waves are the waves where the displacement of the medium is in the same direction as the direction of the travel of the wave.

Longitudinal

What is the definition of frequency in waves?

In physics, the term frequency refers to the number of waves that pass a fixed point in unit time. It also describes the number of cycles or vibrations undergone during one unit of time by a body in periodic motion.

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Multiple Choice

One important characteristic of sound waves is that they are ___________________ waves.

• mechanical

• short

• ultraviolet

• primary

Multiple Choice

Sound waves must travel through ___________________.

• air

• a medium

• an outward area

• a short

Multiple Choice

Sound waves can NOT travel through

• Air

• Water

• Earth

• space

Multiple Choice

The sound that we actually hear is the vibration of molecules.

• True

• False

Multiple Choice

Longitudinal waves means that the disturbance of the wave travels in different directions as the wave.

• True

• False

Multiple Choice

This is a visual of a sound wave. It is an example of _____________________ wave.

• a mechanical

• a longitudinal

• both a mechanical and longitudinal

Multiple Choice

If there is a loud noise in your house, the sound travels through

• the air

• the air and the wall

• the air, the wall, the floor

• the air and most everything in the house

Multiple Choice

What is the source of a sound wave?

• Electricity

• Vibration

• Light waves

• Tiny nuclear explosions

Multiple Choice

Sound waves CANNOT travel through which of these:

• Paper

• Milk

• Outer space

Multiple Choice

Loudness of waves is measured in

• Hertz

• Decibels

• Watts

Multiple Choice

High frequency sounds have _______ pitch

• HIgh

• Low

Multiple Choice

High Amplitude =__________________

• Louder sounds

• Quieter Sounds

Multiple Choice

Low Amplitude = ______________

• Quieter Sounds

• Louder sounds

Multiple Choice

Low frequency = _______ Pitch

• Low

• High

Multiple Choice

A sounds high or low pitch depends on the waves ______________

• frequency

• amplitude

Multiple Choice

A sound is loud or soft depending on its ____________

• Amplitude

• Frequency

Multiple Choice

A reflected sound wave is called a(n) ______.

• frequency

• pitch

• echo

• rarefaction

Multiple Choice

Way in which sound waves are used by animals such as dolphins and bats.

• Echolocation

• Transverse

• Doppler Effect

• Longitudinal

Multiple Choice

Standing waves are created by

• Two identical waves (same frequency and wavelength) reflecting off each other

• Two identical waves (same frequency and wavelength) being diffracted together

• Two identical waves (same frequency and wavelength) move through each other in opposite directions

• Two identical waves (same frequency and wavelength) are diffracted from two identical sources

Multiple Choice

The moving black dot is called:

• a node

• an anti-node

• an anti-amplitude

• the wangy bit

Multiple Choice

How many antinodes does this standing wave have?

• 5

• 6

• 7

• 8

Multiple Choice

Which harmonic is shown?

• 1st

• 2nd

• 3rd

• 4th