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physics required practicals*
paper 2
ripple tank
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Created by
marjan
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Cards (16)
What is the purpose of a ripple tank?
To observe features of
water waves
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What equipment is used in a ripple tank?
A shallow tray of water and a
vibrating bar
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How is the vibrating bar powered in a ripple tank?
It is connected to a
power pack
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What happens when the bar vibrates in the ripple tank?
It creates
waves
across the water surface
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How is the image of the waves produced in the ripple tank?
Light shines through the
water
onto
paper
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What is the easiest way to measure the waves in a ripple tank?
Record the waves using a
mobile phone
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How do you measure the wavelength of the waves?
By placing a
ruler
on the paper
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What is the method to find one wavelength from ten wavelengths?
Divide
the
total distance
by 10
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If 10 wavelengths equal 26 centimeters, what is one wavelength?
0.026
meters
0.026 \text{ meters}
0.026
meters
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How is frequency defined in the context of waves?
Number of waves passing a
point
each
second
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What is the more accurate method to find frequency?
Count waves
in
10 seconds
, then divide
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What is the frequency if 24 waves pass in 10 seconds?
2.4
Hertz
2.4 \text{ Hertz}
2.4
Hertz
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How do you determine the speed of the waves?
Use the wave equation: speed =
frequency
×
wavelength
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What is the wave speed if frequency is 2.4 Hertz and wavelength is
0.026
meters
0.026 \text{ meters}
0.026
meters
?
0.0624
meters per second
0.0624 \text{ meters per second}
0.0624
meters per second
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What is another method to determine wave speed?
Measure time
for a wave to travel the tank
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Why might results differ using two methods to measure wave speed?
Due to
measurement errors
in timing
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