Reaction Times.
AQA Coursework: Reaction Times Grandad told Simon that some people have slower reactions than other people. Simon decided to test the reaction times of some of his friends. To determine whether this hypothesis is correct, I could test the following; Girls vs. Boys Sports teams vs. Non-sports teams Top sets vs. Lower sets Test taken in the morning vs. Test taken in the evening Children vs. Adults I have decided to concentrate on a comparison between different age groups. I believe that year seven's reaction times will be faster than those of year elevens because they are genuinely not as tired or slowed down by examination, college and career worries. Once I have studied in depth this hypothesis I shall then extend my investigation to another factor previously mentioned above. To collect my data I used the ruler test in which a 300mm ruler was dropped from the 0mm mark at a set point and wherever your hand landed in catching it was the length of their reaction time (e.g.; 10mm being very fast, 300mm being considerably slow). Although I collected some of the data myself, some was taken by a teacher in secondary data format. The test was taken 3 times to find a personal average by each pupil in year seven and year eleven. I then used random sampling in which I labelled every pupil with a number and then used the random key on my calculator to
Sociology Coursework
Sociology Coursework - Chapter 1 Topic area: Stereotyping by Sexuality I have chosen this topic area because it is something which has had a lot of media attention. I personally do not know about the area in great detail so I would like to learn more. It is a relatively taboo subject, not spoken or thought about out rightly by many people; therefore I would collate some very individual and new information from different types of people. There are many areas of my topic which people will be able to talk about within my investigation methods. Also, sexual stereotyping is something which I will be able to research fully and gain a lot of information about to fulfil my aims for my coursework. It will be possible to make the most of my subject area so as to complete the coursework to the best of my ability. Sexual stereotyping is an unexplored subject which I would love to venture into. My question: What are the attitudes differences between ages and sexes of people towards homosexuality? From this question I will be able to investigate and research many different kinds of people and their attitudes towards homosexuality therefore giving me a good amount of information. In this question I will try and focus on the differences in attitude between age groups and sex towards homosexuality. This will give me a wide range of people to try and interview and give questionnaires to
Parachute Investigation
Parachute Investigation Task To investigate the decent rate of a parachute dropped from various heights, other variables could be - * Weight * Shape of canopy * Weather - temperature, wind * Released from hands or thrown into the air * Strings * Material * Surface area Method To be able to keep it a fair test I needed to use the same parachute all the time also the weight had to be kept the same at all time. I assembled a few parachutes and investigated which material for the canopy would be most suitable, to perform the investigation, for instance different materials may be heavier than others and will descend much quicker making it hard to record the results, also different materials will have different air resistances making it hard again to record the results. I have now created the canopy using plastic as this is the most effective with a surface area of 38cm x 34.7cm = 1318.6cm . The size of the canopy is very important this determines how fast or slow the parachute will fall for example if the surface area was only 2cm x 2cm the parachute would fall very quickly as they is little air resistance to slow down the parachute. The size of the strings I decided to use is 4.30cm on which to attach the weight that will not be changed. The strings also play an important part of the rate of decent if the strings were too small the parachute would descend very
Obtaining Zinc Oxide from calamine.
Obtaining Zinc Oxide from calamine Theory Calamine is a mineral that contains Zinc Oxide. Its composition is quite complicated but it can be considered to contain zinc carbonate (ZnCO3). Upon heating it decomposes as follows: ZnCO3 ZnO + CO2 (C=12, O=16, Zn=65) The equation allows you to calculate a theoretical conversion of the calamine into zinc oxide but how close to this can be achieve in practice? In the chemistry industry they need to be able to calculate %yields in order to make sure that their processes are economical. Aim This Experiment will try to produce a conversion chart which will show how much zinc oxide can be made by experimenting by heating different masses of zinc carbonate. These thus can be compared to the theoretical values worked out from the equation. Prediction I predict that the results in the test will not match those in the theoretical results. They will be either a little above it due to the efficiency of the experiment. Plan Safety The safety factors in which we have to consider are the Bunsen Burner. We must also wear goggles at all times and must make sure not to pick up the mineral wool, as it is an irritant. Fair Testing In order this ensure that this experiment is accurate and fair, we need to take into consideration the factors effecting whether this experiment will be fair. The first concern is when burning
Investigation in to the relationships between IQ results, Key stage 2 results and gender in secondary school students
Maths Coursework - Statistics Introduction We are going to investigate the relationships between IQ results, Key stage 2 results and gender in secondary school students. The school that we are using to gather information for our sample from, Mayfield, is a fictitious high school. However, the data that is presented is still based on a real school and real students. Hypothesis I predict that this investigation will prove that girls are more intelligent than boys. There are plenty of surveys that show that key stage 2 results are higher for girls than boys. Although these surveys may be questionable, as there would be some exceptions. Plan By comparing the differences between the 3 factors, for girls and boys, we will be able to determine which gender is more intelligent. We will be using a random sample of 100 students - 50 boys and 50 girls. These 100 students will be selected randomly from year 7. We will then use this sample to analyse the information and make judgements about it. We will make graphs and charts to show our results, which we will use to draw our conclusions on our information. In order to obtain our sample, we did some stratified random sampling. This means that we took 50 boys and 50 girls form year 7, but used the random numbers generator on our calculator to pick which students would be selected for our sample. We did this so that the information