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Ripple tank
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ariyan
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Cards (23)
What piece of equipment is used to observe the features of water waves?
A
ripple tank
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What is a ripple tank?
A shallow tray of water with a
vibrating bar
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What is the vibrating bar in a ripple tank connected to?
A
power pack
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What happens when the bar in a ripple tank vibrates?
It creates
waves
across the surface of the water
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Where is the lamp positioned in relation to the ripple tank?
Above
the
ripple
tank
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Where is the sheet of white paper positioned in relation to the ripple tank?
Below
the tank
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What does the image on the paper represent when light shines through the water in a ripple tank?
The image of the
waves
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What is the easiest way to record waves in the ripple tank experiment?
Using a
mobile phone
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Why is it useful to record the waves using a mobile phone?
Allows
playback
at different speeds or
freezing
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What is the first step in measuring the wavelength of waves in a ripple tank experiment?
Place a
ruler
on the paper
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What is the next step after placing a ruler on the paper to measure wavelength?
Freeze
the image of the waves
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How should you measure the wavelength in the frozen image of the waves?
Measure the
distance
between one wave and
10
waves further
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If 10 wavelengths equal 26 centimeters, what is one wavelength in meters?
0.026
meters
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What is frequency?
Number of waves passing a point each
second
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How can you accurately find the frequency of the waves?
Count waves in
10 seconds
and divide by 10
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If 24 waves pass a point in 10 seconds, what is the frequency?
2.4 Hertz
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Why is it helpful to record the frequency measurement?
To watch it in
slow motion
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What is the formula to determine the speed of waves using wavelength and frequency?
Wave speed =
frequency
x
wavelength
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If the frequency is 2.4 Hz and the wavelength is 0.026 meters, what is the wave speed?
0.0624
meters per second
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What is an alternative way to determine the wave speed?
Measure time to move
length of tank
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How do you calculate the speed by measuring the time it takes for a wave to travel the length of the tank?
Divide
the
distance
traveled by the time taken
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Why might the two methods of calculating wave speed yield slightly different results?
Due to
measurement errors
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What type of errors are likely to occur in this experiment?
Timing errors
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