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

Chesil Beach Investigation

Extracts from this document...


Chesil Beach Investigation Hypothesis 1. The size of the pebbles will get BIGGER as you move to the LANDWARD side of Chesil Beach. Hypothesis 2. The slope angle will INCREASE as you move to the LANDWARD side. Hypothesis 3. The pebble size at the western end of Chesil Beach (Abbotsbury) will be BIGGER than the eastern end (Fortuneswell). Our aim when we got to Chesil Beach was to: - 1. Look for a change in the size of the pebbles along our transect and, 2. To look for a change in the slope angle along our transect. To achieve these aims we inserted two ranging rods, five metres apart from each other with the tape measure, along our transect (making sure that the top of the aluminium spike, where it meets the rod, was at ground level). We decided to put them 5 metres a part, as going to Chesil Beach before to carry out an initial inspection; from this initial inspection we also decided that we should measure the pebble size every metre. We then aligned the gun clinometer, which is a device used to measure slope angles, with the bottom of the top marker on the foresight rod. ...read more.


After this initial inspection we concluded that we should measure the slope angle every 5 metres. The reasoning behind this is that if we measured every 1 or 1/2 a metre it would be difficult to detect variations, as the slope angle does not change that much over 1/2 a metre; furthermore it would be too arduous and time consuming. The point of this exercise was to generate a general outline of the slope profile, not an impeccable interpretation of the beach profile. Also if we surveyed the slope angle every 50 metres we would fail to notice the subtle variations in the slope profile and as Chesil Beach is only approximately 100 metres wide we would produce a triangular shape for our profile. Along with the above if we measured to this degree we would increase the margin of error as in more instance the summit of Chesil Beach may obscure the backsight from the line of sight, preventing us from measuring accurately. We concluded, in addition to the above, that we should measure the pebble size every 1 metre, because if we measured every 5 metres insufficient quantities of data will be collected, impeding us from acquiring a credible average. ...read more.


But as with any data gathering process there will always be disadvantages; this process lacks structure, if you were using systematic sampling you could explain how and when and why you are going to measure, but with random sampling all you can see is that you will pick and measure the pebbles in any order. This is dangerous as it may put across the sense that your work is disorganised and that you have not put any thought into your data collection. Furthermore it is harder to plot data using random sampling because if you used systematic sampling you could say that you will measure the pebbles every metre and this means that when you plot a graph/chart your axis will have regular intervals. But if you use random sampling the axis could go like this 0.3, 2.76, 50.65. Some people argue that random sampling is time consuming, others say it's not. It could be seen as time consuming as you will have to measure where you are selecting your pebbles every single time you select them, and this measurement will not always be a round number. But it could also be seen as quicker compared to other ways as you can pick the pebbles from anywhere and not bother about measuring every metre or so. ...read more.

The above preview is unformatted text

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

Found what you're looking for?

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

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 Coastal Landforms essays

  1. "An investigation into the methods of coastal management along Brighton's Coastline and the reasons ...

    The waves act as claws and dig away the beach material. This was why the beaches in four sites were steep. Some were steeper than others because in some paces sand was much deeper and the waves were more fearsome so they were able to claw away more beach material.

  2. Geographical Investigation of Chesil beach.

    The reason why we used the poles was mainly for ease of use if we decided to continue our investigation another day. The fact that they were one hundred metres apart was a bonus which meant that there was sufficient distance between our measurements to ensure some change.

  1. How and why does Beach Characteristics

    Permeable - Orange Sand 450000 years ago during the Anglican glaciation 3-5 Divided up into layers, each deposited at different times, consists of sands, gravels and clays. Permeable - Red Sand 1-2 million years ago 2-5 A conglomerate of sands, shingle.

  2. An investigation into how beach material varies in shape and size up the beach.

    pebble was found near the shore, as opposed to near the cliffs. I selected this technique as it allowed me to accurately measure the pebbles features in a short space of time. I also took some photos that I have annotated in my project as they allowed me to explain

  1. Investigation into the Pebble Ridge at Westward Ho!

    21.29 25.96 21.18 24.08 18.77 20.45 23.17 Middle 25.14 25.39 21.23 19.6775 8.97 12.375 29.12 21 8.3 26.73 16.42 15.41 20.57 20.06 16.82 End 25.25 27.2575 19.57 21.77 18.99 20.21 23.71 23.97 24.8 30.66 19.33 20.38 29.41 24.21 16.67 Figure 5 shows that mean pebble length at the base, middle

  2. I am going to study Camber Sands and Fairlight to see if the hypothesis ...

    Beach Profile Data: Camber Sands - Set 1: Distance Up the Beach (m) Up or Down (U/D) Angle (Degrees) Distance Up the Beach (m) Up or Down (U/D) Angle (Degrees) Distance Up the Beach (m) Up or Down (U/D)

  1. Hengistbury Head investigation.

    To support my investigation I collected my data by going out to Hengistbury Head for 2 days and taking down various pieces of information about the site. I will use the data I collected as primary data and I will get my data and put it in to a information table to show it in a structured and systematic way.

  2. My pilot study and extended investigation is to be conducted at Hunt's Bay, Gower.

    The speed at which the tide covers and uncovers the shore is described as the 'rule of twelve'. In the first hour the tide rises and falls by 1/12th of its range, 2/12th in the second hour, 3/12th in the third hour, 3/12th in the fourth hour, 2/12th in the fifth hour and 1/12th in the sixth hour.

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