• 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
  10. 10
  11. 11
  12. 12
  13. 13
  14. 14
  15. 15
  16. 16
  17. 17
  18. 18
  19. 19

IB GR4 Project / Global Warming

Extracts from this document...


IB SCIENCE GROUP 4 PROJECT GLOBAL WARMING Does acid rain cause hardness in water? Does carbon dioxide affect plant growth? Is there a difference between the convection current of acid rain and distilled water? Ali Ercing�z Burcu Erdogan Deniz Kiratlioglu Can Atalay Ege Zorlu Arman Onart Subjects and Group Members Chemistry: (Ali Ercing�z, Can Atalay) Does acid rain cause hardness in water? Biology: (Burcu Erdogan, Ali Ercing�z, Ege Zorlu) Does carbon dioxide affect plant growth? Physics: (Can Atalay, Deniz Kiratlioglu, Arman Onart) Is there a difference between the convection current of acid rain and distilled water? GLOBAL WARMING Global warming is the effect of greenhouse gases on the earth. Greenhouse gases are the emissions that rise into the atmosphere and trap the sun's energy, keeping the heat from escaping. Because of the global warming, the air temperature near the earth's surface rose by 0.9�C during the last 100 years. This causes the sea levels to rise, increase the intensity of extreme weather events and increases the amount of acid rain. As a result of these newly formed conditions, unprecedented natural disasters and damages the natural life such as agricultural yields, species, extinctions and the range of disease vectors arise. While these are occurring, people are trying to defend their future both socially and politically. To be able to take steps upon stopping the effects of global warming, people need to be aware of this natural danger. We as a science fair group, investigated the effects of global warming under three specific titles. Water, carbon dioxide, methane, ozone gases are heading to global warming. This is because of them preventing escaping of radiation out of the atmosphere. Atmospheric carbon dioxide increases the energy input of earth's atmosphere, due to increase of radiation. The increasing amounts of these gases also increase the amount of substances which dissolve in water and this causes hardness in water because of acidity. ...read more.


If leather produced after boiling the water this shows that the water only had temporary hardness; because the hardness of the water could be removed by boiling. However if the water did not produce leather when tested with soap after being boiled, this showed that the water was permanently hard and that this hardness can not be removed by boiling, and can be removed through the use of an ion exchange resin. I predict that if the calcium ions being dissolved in the rain water is calcium carbonate, then the water produced will be temporarily hard. This is because calcium carbonate is insoluble, meaning after being dissolved in the acid rain sample, and after boiling this sample, this calcium carbonate can be removed by boiling: Ca(HCO3)2 --> CaCO3 + CO2 + H2O By boiling temporary hard water, the water's softness and purity can be restored again, as the calcium ions will have been removed. Apparatus Apparatus Justification Soap To test for the hardness of the water sample, by seeing whether lather is produced when soap is added to each sample of water. Calcium Carbonate To be dissolved within each water sample (rain and distilled) to see if hard water is produced. Bunsen Burner To boil the sample of rain water if it is was found to be hard, in order to determine whether it is permanently or temporarily hard. Test Tubes To contain a small sample of the water sample after the calcium ions have been dissolved within it (inside the beaker). This is where the sample will be tested for hardness by the soap, so as to see the amount of lather produced more clearly (if the water is soft). Distilled water 1) To dissolve calcium ions, to see if hardness can be caused in pure water. 2) To dilute hydrochloric acid, which will be used instead of rain water (because it would have been unpractical to wait for rain and collect it). ...read more.


The plants inside this container, without much carbon dioxide grew more in days 1-2 than the plants in the container with the carbon dioxide grew for the entire experiment. The data shows clearly just how much difference there was in the growth between the growth of the beans inside the container with the carbon dioxide being produced and the growth of the beans inside the other, control container. Our findings, show that carbon dioxide really does have an effect on plant growth, and has the ability to (when in high concentration), to stop plant growth completely (as was seen in this experiment). This experiment highlights just what a danger a greenhouse gas like carbon dioxide is to the atmosphere in high concentrations, and what is more worrying is that the amount of carbon dioxide and other harmful greenhouse gases are gradually increasing in the atmosphere. Even in low concentrations, carbon dioxide and other polluting gases can be held accountable for the increasing number of human diseases such as asthma. It is also a great danger to plants and can be very harmful to them, as clearly demonstrated by this experiment. As, we have also learned from this experiment, it also traps heat rays from the Sun, prevents it from re-entering space and keeps it within the Earth's atmosphere, causing global warming (the greenhouse effect). Another problem arising from excess carbon dioxide being present in the atmosphere is that it causes acid rain once the carbon dioxide gets dissolved in atmospheric precipitation to form dilute carbonic acid (which is acid rain). Acid rain affects the pHs of soil, lakes, rivers etc. and has a negative effect on architectural structures due to its corrosive nature. This experiment clearly emphasizes just how important it is for the world to reduce these carbon dioxide emissions, and some of the long-term problems that may arise if carbon dioxide continues to be released into the atmosphere at the rate that it is being produced today. ?? ?? ?? ?? 1 ...read more.

The above preview is unformatted text

This student written piece of work is one of many that can be found in our International Baccalaureate Group 4 Projects 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 International Baccalaureate Group 4 Projects essays

  1. Personal project - I have chosen Human Ingenuity as my Area of Interaction because ...

    turned out to be rather hard and a lot more difficult than I expected. For example: I looked at the world record for fastest time to eat 3 soda crackers which seemed rather easy, but it was actually rather challenging as soda crackers are really salty and are hard to chew fast and swallow fast too.

  2. Environmental Impacts of Bowling in the past and in the future. Originally, bowling balls ...

    Among the alternatives developed were urethane, urethane/epoxy combinations, high-flash point solvents, and water-based systems. Each of these coatings was designed to replace the nitrocellulose lacquers and provide an added measure of safety.

  1. Why is alcohol considered to be a serious problem? As many 33,000 people ...

    In 1920 the US passed a law forbidding the manufacture, import or export or sale of alcohol; however this ban was cancelled in 1933. Today, alcohol is a major industry which gains many millions of pounds in profits and contributing to the US economy (see pie chart below): In today's

  2. homeostasis and sports - experiments measuring the effects of exercise on the body

    As for volunteer 2, she had a normal breakfast and so her glucose level was relatively normal. However as she played, her blood glucose fell and so negative feedback occurred in order to regulate the glucose level in her blood.

  1. Personal Project - creating a website to educate people about the history of the ...

    can alter to my exact specifications, it has an easy to use interface so I can navigate and edit my website design easily and it is free. These aspects make Wix the perfect website designer for a novice like myself.

  2. Supply Chain Management for Kinley Project

    Considering trade off among those three potential locations we ended to one conclusion to put distribution centre in Germany. 3. MAKE OR BUY ANALYSIS Decision for make or buy is very sensitive due to related to cost and brand image of the company.

  1. Research Report Time management strategies among HKU SPACE Community College students".

    19 of them felt never, included 10 males and 9 females. There were different trends between two genders in the feeling of too much time. For males, who had a planning habit were more likely to feel having too much time than who did not have.

  2. Determine the presence of reducing sugar, protein and starch in the food products by ...

    This basically means that Biuret test is used to determine the presence of protein in the substance. The reagent has a color of light-blue, and it includes sodium hydroxide (10% NaOH) and copper (II) sulphate (1% solution of CuSO4). The indicator-color is purple.

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