Ripple Tank Practical: Wavelength, frequency and velocity

Question 1

General Ripple Tank Practical:

1. _________ the ripple tank with about 5 cm depth of water.
2. Adjust the height of the wooden rod so that it just ___________________ of the water.
3. ________________________________ and adjust until ______________________ can be clearly observed.
4. _______________________ of a number of waves with a photograph of the card with the ruler, then _________________________ to record _________________.
5. Count the number of waves passing a point in ten seconds then divide by ten to record ______________.
6. Calculate the speed of the waves using: _____________________________________.

Answer 1

Set up

touches the surface

Switch on the lamp and motor
low frequency waves

Measure the length
divide by the number of waves
wavelength

frequency

wave speed= frequency x wavelength

Question 2

To find out frequency,
you must use a __________ to count the number of ______ passing a point in a ______ time period.

Then ________ the time by the number of waves for one wave: __. Then work out frequency using __=______

Answer 2

stopwatch
waves
fixed
divide
T
f=1/T

Question 3

To find out wavelength, use a ___________ to _______ an image and a _____________ to measure the distance _______________________.

Then count the number of _________________.

___________________________________

Answer 3

camera
freeze
metre ruler
between two wave fronts
waves in-between
wavelength=distance/ number of waves

Question 4

To find out velocity, determine the mean ____________ and mean ______________.

Then measure the _______ it takes one wave to travel the _____________________.

Then use __________________ for velocity.

Answer 4

frequency
wavelength
time
length of the screen
speed=distance/time