• Join over 1.2 million students every month
  • Accelerate your learning by 29%
  • Unlimited access from just £6.99 per month

Wave Coursework

Extracts from this document...

Introduction

Physics Coursework Plan

Investigating how the velocity of water waves depends on the depth of water

Background knowledge

Speed (V/ms-¹) = distance (D/m) ÷ time (T/s)

Using this equation I can calculate the speed at which the water wave travels at. The deeper the water, the faster the water wave travels

Aim

I am going to investigate how the velocity of water waves varies on the depth of the water and will find the relationship between these two variables.

Prediction/Hypothesis

 I believe that when the depth of the water is increases the velocity of the water waves will increase in proportion. Average speed = distance ÷ time

Apparatus

  • Tray
  • Support stand
  • Stop watch
  • Ruler
  • Water

Diagram

Variables and constants

The only variables of this experiment are to be:

  • The depth of the water
  • The velocity of the waves

The quantites which will remain constant are:

  • The temperature of the liquid
  • The type of liquid
  • The height at which the tray is lowered from
  • The number of waves recorded
  • The same tray is used

To ensure a fair experiment, I will record my results 3 times. This will also increase the reliabilty of my results.

...read more.

Middle

4.18

4.31

4.22

0.384

2.5

1.62

3.78

3.87

3.81

3.82

0.424

3.0

1.62

3.69

3.50

3.50

3.56

0.455

3.5

1.62

3.35

3.28

3.37

3.33

0.486

4.0

1.62

3.24

3.21

3.18

3.21

0.505

Other results:

Length of tray - 40.50cm

Height lifted to – 13mm

Observations

During the experiment there were a few factors that could have potentially affected the results:

1. The waves curved at edges which means not all of the wave reached the end of the tray at the same time.

2. When I increased the depth of the water a small amount of the water spilled over the side after the tray was dropped.

3. The tray was

...read more.

Conclusion

directly proportional to the velocity squared only as proven satisfied pass the origin.

isdirectly proportional to   Depth

Hence Therefore:   V isdirectly proportional to  √Depth

The straight line shows that wave velocity increases proportionally with √Depth. Where there is a greater depth of water, the water has a greater mass and so, by conservation of energy, when it has a higher mass and height it will have a greater kinetic energy when dropped.

The increase in velocity begins to slow down with a greater depth as it has a greater surface area in contact with the tray; therefore, there is a greater amount of friction. The greater the friction, the quicker the kinetic energy decreases.

Improvements/Changes

If I were to carry out this experiment again, I would make the following improvements/changes:

  • Use a deeper tray so that it can be raised to a reasonable height without splashing over the sides slightly.
  • I could investigate in a greater range of depths which could also increase the reliability of my results.
  • Investigate other factors that may vary a waves velocity.

Bibliography

AS Advanced Physics Salters Horners Heichemann, 2000

...read more.

This student written piece of work is one of many that can be found in our AS and A Level Waves & Cosmology section.

Found what you're looking for?

  • Start learning 29% faster today
  • 150,000+ documents available
  • Just £6.99 a month

Here's what a teacher thought of this essay

3 star(s)

A graph would definitely improve this report but the general approach to gathering data makes sense on first reading. The results are consistent with theory. Some further comments about uncertainties with the timing and measurement of depth could have been included. Overall a good report but missing key information. 3 stars

Marked by teacher Pete Golton 06/06/2013

Not the one? Search for your essay title...
  • Join over 1.2 million students every month
  • Accelerate your learning by 29%
  • Unlimited access from just £6.99 per month

See related essaysSee related essays

Related AS and A Level Waves & Cosmology essays

  1. The aim of this investigation is to examine the effect on the spring constant ...

    The 2 averages are then substituted into the above gradient equation with the 2.5th value being x1 and the 7.5th value being x2. As the gap between x1 and x2 is therefor 0.5g, this value is then substituted in as y.

  2. Experiment B11: Measuring focal length of lenses

    5.8fx 58 46 12 34 9.517 s ? 6.2fx 62 49.5 12.5 37 9.980 s ? 6.6fx 66 54 12 42 9.818 Mean focal length f of the convex lens = = 9.761 cm Uncertainty = = 0.154 cm ? Mean focal length f of the convex lens = (9.761 ?

  1. Investigate any relationship present between the distance between a solar cell and a lamp, ...

    From this, we can deduce that different parts of visible light travel with more speed. By using the formula: v = f ? Where v stands for velocity Where f stands for frequency Where ? stands for wavelength We can find out which parts of light have more/ less energy.

  2. investigate how and why the depth of water affects wave speed

    Examples of transverse waves are light waves and also water waves, which are the waves that we are investigating in this experiment. The vibrations in these waves are perpendicular to the direction of which the waves travel. Transverse waves have very important features which, can be shown in the diagram below.

  1. Free essay

    OCR Physics B Research Project - The Expanding Universe

    If there is an infinite number of stars, an infinitely large amount of light should reach us. From this, it can be concluded that the universe is not infinite in size and age. After the Russian mathematician, Alexander Friedmann, learned of Einstein's Theory of General Relativity, he saw that it implied a changing universe.

  2. How power produced by a solar cell is affected by its distance from a ...

    I did this because the readings that the multi-meter gave varied by quite a wide range so I decided to take more measurements which I can then use together with previous results to find the mean to obtain more accurate view of the relationship.

  1. Hooke's Law / Young's Modulus - trying to find out what factors effect the ...

    I will then stretch the spring a further 15mm and then release the spring and take a time measurement for an oscillation in the spring. This however will be inaccurate due to the response time of starting and stopping

  2. Velocity of a wave in a tank at varying depths of water

    The independent variable was the depth of the water with the dependant variable being the speed of the resulting wave. The equipment 1 x steel ruler: accurate to � 1mm used to measure depth of water, height of drop and length of tray 1 x plastic tray (length 355mm, 35.5cm):

  • Over 160,000 pieces
    of student written work
  • Annotated by
    experienced teachers
  • Ideas and feedback to
    improve your own work