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Jeopardy. Choose a category. You will be given the answer. You must give the correct question. Click to begin. Choose a point value. Choose a point value. Click here for Final Jeopardy. Vocabulary A . Vocabulary B. Property of Waves. Characteristics of Waves. Interaction of Waves. - PowerPoint PPT PresentationTRANSCRIPT
Choose a category. You will be given the answer.
You must give the correct question. Click to begin.
Click here for Final Jeopardy
Vocabulary A Vocabulary B Characteristics of Waves Interaction of Waves Essential Questions
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30 Points 30 Points 30 Points 45 Points
40 Points 40 Points 40 Points 60 Points
50 Points 50 Points 50 Points 75 Points
Property of Waves
What type of interaction occurs
when a wave bounces back after striking a barrier?
Reflection
When 2 or more waves overlap, the result is known as
what?
Interference
The material through which a wave travels is
called a ___________.
Medium
When two waves combine and the waves CRESTS
overlap, what type of interference
occurs?
Constructive Interference
The vibrations that matched the natural
frequency of the Tacoma bridge,
causing it to collapse, is an example of ____________.
Resonance
An incoming wave interacts with a
reflected wave and the combined wave
appears to be standing still. This is an example
of what?
Standing Wave
Being able to hear sounds from the hall,
even though you cannot see where the
noise is coming from is an example of what?
Diffraction
The law which states that the
angle of incidence equals the angle of reflection is known
as ___________.
The Law of Reflection
What parts of 2 incoming waves
combine to create destructive
interference?
A crest and a trough.
What property of the wave is shown
at A?
A
B
Wavelength
What are the four properties of
waves?
Amplitude, Wavelength,
Frequency, and Speed
What is the name of the unit which
measures the frequency of a
wave?
Hertz
The wavelength of a given wave is 6 m. The frequency of the same
wave is 1/3 Hz. What is the speed of this wave?
INCLUDE 3 STEPS IN YOUR CALCULATION TO RECEIVE
CREDIT
2 meters / second
What 2 ways can you measure the wavelength of a
longitudinal wave?
1. Compression to Compression
2. Rarefaction to Rarefaction
Mac and Josh stand 7 meters apart and make a transverse
wave with a piece of rope. Their wave has a vertical distance of 18 cm from trough to crest, a
frequency of 2.6 Hz and a horizontal distance from crest to nearest trough of 30 cm. What
is the amplitude and wavelength?
Amplitude = 9cm
Wavelength = 60 cm
A wave transfers _______, but
does not transfer ___________.
Energy; Particles / Matter
A ______ is a repeated back
and forth OR up and down motion.
Vibration
Which wave has the highest
energy?
Wave B has the highest energy
because it has the highest amplitude.
The section of a longitudinal wave where the particles are spread apart is
called a(n) ________.
Rarefaction
What kind of waves requires a medium through
which to pass through?
Mechanical
What interaction of waves occurs when a wave hits a surface through which it cannot pass and bounces back?
Reflection
What occurs when a wave enters a new
medium at an angle?
Refraction
The following waves are moving toward each other. What will be the amplitude of the combined wave when
the 2 crests meet?
35 cm
Name the two types of interference and
what happens to the amplitude of the wave in each
case.
Constructive Interference –
amplitude gets bigger
Destructive Interference –
amplitude gets smaller
Explain what happens to allow
you to see the moon at night.
The sun’s rays REFLECT off
the moon’s surface.
Explain the difference between
transverse and longitudinal waves
with respect to particle movement.
In transverse waves the particles move
perpendicular to the wave movement and in longitudinal waves the particles move parallel to the wave movement.
Explain the difference between
a tsunami and a regular ocean
wave.
Regular Ocean Wave – smaller amplitude and shorter wavelengths; carry less energy
Tsunami Waves – larger amplitude and longer
wavelengths; carry more energy
A wave has a frequency of 330 HZ
and a speed of 660 m/s. What is the wave’s
wavelength?NOTE: INCLUDE 3 STEPS IN YOUR
CALCULATION TO RECEIVE CREDIT
WS = WL x F
660m/s = WL x 330 Hz
WL= 660/330 = 2 m
Based on the table below, what general conclusion can you
make about the speed of sound in solids, liquids, and gases?
Medium Speed (m/s)Air at 0°C 331
Air at 20°C 344Brick 3,628Steel 5,064Water 1,480
Sounds travel fastest through solids or sounds travel slowest through gases.
How are wavelength,
frequency, and energy all related?
Longer wavelength = less frequency = less
energy
Shorter wavelength = greater frequency=
more energy
Make your wager
FINAL JEOPARDY CATEGORY
Interaction of Waves
If you push a shopping cart that has a stiff or damaged wheel, it is
difficult to steer the cart in a straight line. Explain
how this is similar to refraction of a wave as it
enters a new medium.
The stiff wheel travels more slowly than the wheel on the other side, so the shopping cart will follow a curved
path, similar to a wave that changes speed when it enters a new medium at an angle.