daily taks connection: wave types, characteristics, and interactions ipc(5): the student knows the...
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Daily TAKS Connection:Wave Types, Characteristics, and Interactions
IPC(5): The student knows the effects of waves on everyday life. The student is expected to:
(A) demonstrate wave types and their characteristics through a variety of activities such as modeling with ropes and coils, activating tunings forks, and interpreting data on seismic waves..
(B) demonstrate wave interactions including interference, polarization, reflection, refraction, and resonance within various materials.
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Foldable Instructions
Construct a two door, shutter fold foldable Materials:
Foldable handout Scissors Pen Colored
pencils/crayons
Instructions: Fold the paper along the
solid fold lines (front side facing you)
Record your name, date and period on the reverse
Color the 2 doors (transverse wave, compression wave) each a different color
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Compression Waves
rarefaction-the less dense region of a compression wave compression-the more dense region of a compression wave wavelength-measured from the start of one compression to
the start of the next compression TASK: Match the letter with the corresponding wave
characteristic under the compression wave door.
wavelength
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Transverse Waves
has crests and troughs crest – high point of the wave trough – low point of the wave
wavelength – from crest to crest or trough to trough Amplitude is distance from crest or trough to the resting position of the wave
larger the amplitude, the greater the energy
TASK: Following the instructions on the LH side under the transverse wave door of your foldable
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Velocity of a Wave
Frequency - number of waves that pass a fixed point per second measured in hertz (Hz); waves/second (1/s) for sound waves, determines the pitch of the
sound (how high or how low a note sounds) Velocity – speed and direction of a wave
measured in meters per second (m/s) Wavelength
Measured in meters (m)
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Tasks
Using the velocity of a wave equation found on the formula chart, solve the problem shown under the compression wave door, RH side
Answer the question under the transverse wave door, RH side
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Let’s review Interactions
Constructive Interference waves add up
Destructive Interference waves cancel each
other
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Reflection
Reflection incident beam normal reflected beam the law of reflection states that the angle of
incidence equals the angle of reflection
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Refraction
Refraction bending of light when changing mediums
depends on speed of light in each medium light bends toward normal when slowing down
and away from normal when speeding up.
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Resonance
Resonance the ability of an object to vibrate at natural
frequency when it absorbs energy standing waves vibrate at natural frequencies
example: rim of glass, strings on a violin, bells
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Polarization
Polarization when light vibrates in one direction
Ex. Polarizing sunglasses
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Apply Your Knowledge
Using the cards, match the wave interaction with its definition and the picture that shows that type of interaction.
Begin Matching Now!!
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Question
When trying to catch a fish in water, a bear needs to take into account the way light bends as it moves from water into air or it will miss the fish and go hungry. The bending of light as it passes from one medium into another is known as –
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Question
Diverging lenses are useful to people who
suffer from nearsightedness because the
lenses can cause images of distant objects to
be focused on the retina. Lenses allow images
to be focused on the retina because of —
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Question
One tuning fork is struck and placed next to an identical fork. The two forks do not touch. The second tuning fork starts to vibrate because of –
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Question
A guitar player is seated next to a piano. The piano player strikes an E key on the piano. The guitarist reports that this causes the E string on his guitar to vibrate. What is the name of this phenomenon?
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Question
The image on the screen is inverted because light rays –
A. condense as they pass through the pinhole
B. travel through the opening in straight lines
C. refract as they strike the screen
D. are polarized by the materials of the screen
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Question
When a DVD is read, laser light touches the DVD surface and is then measured at location A. What allows light to return to location A after striking the DVD surface?
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Question
An empty cup was tightly covered with plastic
wrap, and a few grains of salt were sprinkled
on top of the plastic. When a tuning fork was
struck and placed slightly above the plastic
wrap, the salt began to move. Which
characteristic of waves does the movement
of the salt best demonstrate?
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Last Question!
Calculate the velocity of the wave shown?