Pictured here is the formula we used in our resonance lab with the PVC pipes:
Explain each part of the formula, and why it was needed.
Question 15
15.
A blue light wave approaches a mirror at 30degrees, which means that the light wave will reflect off the mirror at _____ degrees.
Question 16
16.
Describe light Diffraction.
Question 17
17.
What did the Double Slit Experiment demonstrate about electrons?
Question 18
18.
Question 19
19.
Where is the longest wavelength in this spectrum?
Question 20
20.
Explain why a sticky note would appear blueish green when hit with ROYGBIV light.
As a transverse wave travels through a rope from left to right, the parts of the rope _____.
move along a sine-wave like path from left to right
oscillate back and forth about a fixed location
move along a line from left to right
The frequency of a wave describes _____.
how far particles move away from their normal resting position
how fast a point on the wave moves along the medium
how often particles of the medium oscillate back and forth
The wavelength of a wave increases if the ______.
speed decreases
amplitude speed increases
frequency increases
frequency decreases
amplitude speed decreases
speed increases
A sound wave is a pressure wave; regions of high (compressions) and low pressure (rarefactions) are established as the result of the vibrations of the sound source. These compressions and rarefactions result because sound
vibrates longitudinally; the longitudinal movement of air produces pressure fluctuations.
is like all waves; it is able to bend into the regions of space behind obstacles.
is able to reflect off fixed ends and interfere with incident waves
waves have a speed that is dependent only upon the properties of the medium.
is more dense than air and thus has more inertia, causing the bunching up of sound.
A sound wave is different than a light wave in that a sound wave is
produced by an oscillating object and a light wave is not.
capable of existing with a variety of frequencies and a light wave has a single frequency.
not capable of diffracting and a light wave is.
not capable of traveling through a vacuum.
Two musical notes that have a frequency ratio of 2:1 are said to be separated by an octave. A musical note that is separated by an octave from middle C (256 Hz) has a frequency of _____.
128 Hz
258 Hz
254 Hz
none of these
345 Hz
Drag and drop each of the following items to the correct category.
considered 'nodal'
an upward and downward pulse traveling in opposite directions within a medium
an upward and downward pulse traveling in the same direction within a medium
considered 'anti-nodal'
two downward pulses traveling in the same direction within a medium
two upward pulses traveling in opposite directions within a medium
Constructive Interference
Destructive Interference
Neither
Sound is not a transverse wave, but it can still interfere because...
...the pitch of two waves will always be percevied to be quiet and loud in different areas.
...we can measure it with a loudspeaker, convert it into electromagnetic representations of compressions and rarefactions, and see them interfereing with it ourselves.
...the change in pressure of the particles is converted into waves so that we can see them, and they interfere because that's how our interpretation of transverse waves works.
...when two or more sound waves occupy the same space, their pressures affect one another. The waves do not bounce off of each, but they move through each other.
The frequency or frequencies at which an object tends to vibrate with when hit, struck, plucked, strummed or somehow disturbed.
Scale
Natural frequency
Timbre
Noise
Music
Octave
A harmonic ...
is created at any frequency within an object
has a pattern of nodal and anti-nodal meeting at the same spots in the standing wave
is created at specific frequencies within an object
can be represented as a standing wave
What seperates noise from music?
whether or not there was a forced vibration
there is no seperation; everything can be and have musical qualities
a mathematical relationship between frequencies produced by the obect
it's a generational thing, in that anyone older than you always thinks your music is noise
Where could you find all of the visible light in the EM Spectrum?
