• Join over 1.2 million students every month
  • Accelerate your learning by 29%
  • Unlimited access from just £6.99 per month
  1. 1
  2. 2
  3. 3
  4. 4
  5. 5
  6. 6
  7. 7
  8. 8
  9. 9

year 9 sycamore investigation

Extracts from this document...


Name: Ayesha Mirchandani Class: 9A Teacher: Mr.Grady Year 9 Sycamore Investigation Aim: To investigate how the mass of a sycamore seed affects it's landing time. Introduction: Seeds have to be dispersed so that they have space to germinate. There are four ways of dispersal but in this investigation we are going to be examining wind dispersal. Wind dispersal is affected by many factors like mass and shape. I have chosen to study the effect mass has on wind dispersal. I am going to use the shape of a sycamore seed to investigate the effect on mass. The sycamore fruit has two curved "wings" that act like propellers on a helicopter. It's shape is designed perfectly as it helps the wind carry it along. PLANNING (8) Preliminary investigations: 1. Should we make the sycamore seed out of paper or cardboard? We made two sycamore seeds one out of paper and the other out of cardboard. We then dropped both at a height of 155 cm. After dropping both we discovered that the sycamore seed made out of cardboard was the best material to use. ...read more.


The windows, air conditioner and doors will be closed therefore the wind speed will be zero throughout all the experiments. To insure this fact, a anemometer (apparatus that measures wind speed) will be present. * Every time blue- tack is added to the model to increase it's mass it will be added on top of the previous. Apparatus: One anemometer (gadget to measure wind speed) A pair of scissors A glue stick One piece of cardboard A packet of blue tack Two rulers (100cm) Electronic measuring scale One stopwatch An empty room The cut out sheet A pencil A 30cm ruler Method: 1. Copy the diagram on the cut out sheet on to a piece of cardboard. Use a 30cm ruler to make sure the measurements are the same as labeled on the sheet. 2. Cut along the bold lines. 3. Fold along the dotted lines. 4. Fold part A forward. 5. Fold part B backward. 6. Fold in part D . 7. Fold in part C so it overlaps part D. ...read more.


0.89 0.94 0.87 0.82 0.75 0.85 3.08 0.0308 0.92 0.92 0.76 0.72 0.87 0.84 3.93 0.0393 0.76 0.73 0.80 0.52 0.64 0.69 5.24 0.0524 0.74 0.42 0.61 0.90 0.48 0.63 7.69 0.0769 0.59 0.56 0.68 0.66 0.66 0.63 9.56 0.0956 0.56 0.70 0.44 0.50 0.34 0.51 OBTAINING EVIDENCE (8) ANALYSING EVIDENCE AND DRAWING CONCLUSIONS(8) Diagram/Graph and Conclusion EVALUATING EVIDENCE(6) Evaluation of method If I were to do this experiment again I would add shape as a control variable list. I would do this because as we added the blue tack the shape changed, which caused the sycamore to spin differently. I would also add, "same person doing all the experiments" as a control point Evaluation of Results The results were fairly accurate as the differences of results (when repeated) varied from 0.00 to 0.70. However, when I changed the mass of the sycamore seed from 5.24 grams to 7.69 grams both the average time of landing were 0.63 seconds. I think this happened because Susan recorded the time of landing for 5.24 grams and I recorded the time of landing for 7.69 grams. ?? ?? ?? ?? October 2007 ...read more.

The above preview is unformatted text

This student written piece of work is one of many that can be found in our GCSE Living Things in their Environment 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 GCSE Living Things in their Environment essays

  1. Investigating Seed Germination. Hypothesis If there is water, oxygen and a suitable ...

    7. Using a 50cm3 measuring cylinder, pour 50cm3 of oil into set up 3). The layer of oil should submerge the seeds completely so that there will be no oxygen. 8. Place Set up 2) into the refrigerator, which will have a temperature of 4�C.

  2. Branded Bleach is more effective at killing E. coli than Non branded bleach - ...

    To determine which statistical test to use it needs to be confirmed whether or not the data shows a normal distribution. To do this I grouped the data based on the range of the inhibition zones and then plotted that against the frequency of the data groups occurrence for each brand of bleach as below.

  1. Literature Review on Germination of Orchid Seeds.

    endomycorrhizal fungi, it is not known whether the enzymes for digestion are produced by the plant or the fungus. A study done in 1976 showed that the activity of peroxidase, ascorbic acid oxidase, polyphenol oxidase and catalase increased upon mycorrhizal infection and that this was in part due to digestion

  2. An Investigation of the Diversity and Abundance of Ground Flora in Coppices of Different ...

    area, using two tape measures, had been set up in both coppices. Within this area, we had to work in groups of 3 and using a quadrat, 10 squares by 10 squares instrument, we first had to take a representative sample.

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