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Wave
Characteristics
1. Catch
a Wave - Physics 2000 - Wave visual - Is this the top or side view of a wave?________________
2.
Frequency
and wavelength (This applet takes a while to load)
INSTRUCTIONS
Click on the grey ball and drag it to alter
the wavelength and amplitude of the wave.
a. How do you move the ball (on the wave) to
alter the wave's wavelength and it's frequency?
b. How do you drag the red ball to increase the amplitudes of
the wave? __________
INSTRUCTIONS:
1. Set the wavelength of the wave on the top
left to 31 and make its amplitude 1.
Flip the other wave upside down by dragging its ball straight down. Give this wave the exact same
frequency and amplitude as
the wave on the left.
c) The wave in the bottom left corner shows
what would happen if the two waves you created
would overlap. Draw what you see.
d) What kind of interference does this show.
Constructive or destructive? (circle)
3. Transverse
and Longitudinal Waves - Phillip Dukes - Brigham Young University
Which wave in this applet shows the way air
molecules move when a guitar string is plucked?
Transverse or Longitudinal? (circle)
4.
Reflection
of Waves from Boundaries
a) What happens when the wave reflects off
the HARD boundary? (scroll down)
b) Scroll down and look at the wave that is shown
crossing over into a new medium. Does all
of the waves energy pass into the
new medium? Explain.
c) Which medium is faster, the low density
medium or the high density medium? (Circle)
5.
Longitudinal
Waves, Transverse Waves and Waves of Mixed Type
What is the difference between the motion of
the particles in the transverse and longitudinal wave?
Sound
1.
Supersonic
Planes (Scroll
- Applet is found on bottom of page) -
Author: Fu-Kwun Hwang
a) Where is the plane when it is finally
heard by the ear on the bottom of the page?
INSTRUCTIONS
HIT
RESET. SELECT A SPEED RATIO OF .5 (half the speed of sound)
b) How much of the plane's travel across
the sky can the observer hear the plane?
Wave Behaviors
1.
Standing
Wave
INSTRUCTIONS
Left Click anywhere on The
Applet
a) How many antinodes does this wave have?
_______ b) How many nodes does this wave have? _______
2.
Standing Wave
- Northwestern University
a) What happens when the wave hits the wall on
the right to create this standing wave?
INSTRUCTIONS:
1. Choose "Both sides closed" 2. Raise the frequency to 515 Hz
a) How many nodes do you have? _________
b) How are the particles at the nodes different
than the particles in the antinode region?
4.
Standing
wave and frequency - C. K. Eng - Hong Kong
INSTRUCTIONS: 1.
Select "Show Ruler"
a) Increase the frequency. At what frequency do
you produce 3 nodes in the string?
b) At what frequency do you produce 4 nodes in
the string? What is the wavelength of this wave?
c) 5 nodes?
Doppler Effect
1. Doppler
Effect and Sonic Boom - (Soundry)
a) When the plane moves the frequency of its
sound wave is changed. How does the frequency of
the planes wave changed on the right
hand side of the plane?
b) ... how is the frequency changed on the left
side of the plane?
c) Describe how the frequency the observer
hears as plane approaches is different than when the
plane departs.
d) Check out the planes motion at higher speeds.
Describe what happens when the plane travels
faster than the speed of sound
(Mach 1.5 and Mach 2)
2.
The
Doppler Effect II -
Colorado University
Which way would the car have to move so that people
on the left side of this street scene would
hear a higher frequency than the people on the right side of this street scene?
Wave Interference
1.
Young's
Double Slit Interference Experiment -
Serge G. Vtorov
a) Which color produced the greatest distance
between the central maxima and the first order
bright line?
b) What happens to the distance between the central maxima and the first order bright line
when you:
- increase the slit distance
(d) ______________
- increase the distance
between the slits and the screen ? (L)_______________
2.
Classic Two-Slit
Experiment - Colorado University
INSTRUCTIONS:
Turn the light cannon on. (green button)a) Slowly decrease the slit
separation. What happens the distance between the central
maximum (middle band of light) and the first order bright lines (band of light on either
side
of the central maximum)?
3.
Polarizing
Lenses - Colorado University
Turn any one of the polarized filters until the light on the way to the camera is blocked.
What angle do you have to turn the
filters so that the light is blocked?
4.
Polarizers
INSTRUCTIONS:
Select 2 from the polarizer menu on the
left. Move 2nd filter until
all the light is blocked.
What angle on the 2nd filter blocked ALL
the light?
Check this one out:
Superposition
Principle of Waves
The Electromagnetic Spectrum
1. Vibrating
Charges and Electromagnetic Waves - Physics 2000
INSTRUCTIONS: Pull
the charge on the right down with your mouse arrow.
a) How does increasing the spring tension
alter the wave?
2.
Electromagnetic
Wave
3.
Spectrum
Click on different parts of the scale shown to
reveal which wave is associated with
each wavelength/frequency.a) Do the dangerous waves tend to have bigger or
smaller wavelengths?___________
... bigger or smaller frequencies?
__________________
b) What is the mathematical relationship between
frequency and wavelength?
_______________________________________________________________________
Fluoroscope
(X-Rays) In which part of your hands are the smallest bones found?
Light
Refraction
INSTRUCTIONS:
Set the top medium's index of refraction to 1.5 and the 2nd mediums to 1.
a. Grab the incoming ray and alter the angle
until you get an angle incidence that produces
no refraction. What is the
smallest angle that produces no refraction
?_______
b. Set the top medium's index of refraction to 1.99
and the 2nd mediums to 1.0. What is the
smallest angle of incidence that
will produce total internal reflection.
____________
2.
Refraction
a) Which indices of refraction produce total internal
reflection?
b) Set the index of refraction to 1.2. Drag the corners of the
rectangle and try to create
total internal reflection. Were you able to do this?
3.
Reflection,
Refraction, and Diffraction
a) Reflection, refraction and diffraction.
Which of theses three brings about a change in the
wavelength of the wave?
4.
Lasers,
frequency, and wavelength
a) How are the following pairs of light the
same and how are they different?
Light from a light bulb and sun light -
sketch each below
Monochromatic light and laser light -
sketch each below
Angles,
Reflection and Refraction - Check it out! -
Author Fu-Kwun Hwang, Dept. of physics, National Taiwan Normal University
Refraction (Angle, Index of refraction)
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Molecular Expressions - FSU
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