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

Explain what is meant by thermal pollution and discuss the implications for life if a body of water is affected by thermal pollution

Extracts from this document...


CHEMISTRY Explain what is meant by thermal pollution and discuss the implications for life if a body of water is affected by thermal pollution Thermal pollution is the degradation of water quality by any process that alters the temperature of a natural water body. This state predominantly arises from the waste heat generated by industrial processes, such as the generation of electricity. Water when used as a coolant for electrical power systems is simply returned back to the water source, affecting the dissolved oxygen (D.O) levels as well as water temperature, as shown in the diagram, posing significant implications for aquatic life. ...read more.


This is fatal for stenothermic organisms, like the Rainbow Trout, that rely on enzyme systems that operate in only narrow temperature ranges. Process and present information from secondary sources to assess the limitations of calorimetry experiments and design modifications to equipment used A Calorimeter is an instrument that measures the amount of heat released or absorbed by the contents during a reaction. Laboratory Calorimeter Bomb calorimeter - The predominant limit of the laboratory calorimeter is keeping the system enclosed, as the heat that the experiment aims to capture is susceptible to loss to the external environment, making it immeasurable - Even with the design modification of a tightly sealed lid, heat still escapes - ...read more.


A Bomb calorimeter. - Bomb calorimeters are usually used to attempt to ensure complete combustion of the sample, as they use a large volume of water as a heat sink for insulation, with a stirring rod to keep the water temperature homogeneous. Heat loss however cannot be fully eradicated - Bomb calorimeters cannot withstand reactions which liberate more than a set amount of energy, thus limiting the amount of sample that can be used - Accurate experimentation must also calculate the heat capacity of the reaction vessel, and their thermal conductivity, as heat liberated by the reaction is also absorbed by the calorimeter Reference list http://www.eoearth.org/article/Thermal_pollution?topic=49471 http://www.pollutionissues.com/Te-Un/Thermal-Pollution.html http://www.join2green.com/ThermalPollution.aspx http://www.chem.duke.edu/~bonk/EnvSupp/Chp10/Chp10.html http://www.ehow.com/info_8290898_calorimeter-its-limitations.html http://www.scribd.com/doc/27259289/Introduction-to-Bomb-Calorimetry http://abundantbrain.com/2010/05/is-a-calorie-a-calorie/ Jacaranda HSC science : preliminary course by Geoffrey Thickett ...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. Science Chemistry Casestudy

    Childhood brain cancer has also been linked to the use of some pesticides. Symptoms of short-term exposure to pesticides include: dizziness, vomitting and nausea, headaches, difficulty sleeping, skin rashes, muscle twitches and pain, flu-like fever and breathing difficulties. Exposure to a high concentration of pesticides could result to death.

  2. Air Pollution

    Many gasses are produced naturally by many processes that take place on earth. The table below shows figures for gas production. Gas Source Amount produced per year in the world (millions of tonnes) Carbon Monoxide (CO) forest fires, biological processes 2000 Sulphur Dioxide (SO2)

  1. Does life exist on other planets?

    Planets Planets offer a possibility of life; they usually contain an atmosphere and depending on how it was formed, what it was formed from and how closes is it to its nearest star, it could provide water, heat, and possible nutrients.

  2. An Investigation into the water quality of the River Banwell in

    Non-point sources are indirectly deposited in the river for example, if fertilisers are put down on a field in wet weather the fertiliser will be washed into the water body by a process called run off. * Non-point source This way of polluting is associated with rain events.

  1. Students at Solano Community College often conduct studies of freshwater macroinvertebrates in Suisun Creek ...

    After reading up on their report, I found out that they found more conductivity in one body of water than the other due to one of the locations having easy access to minerals or materials that pollute the water. Therefore, my hypothesis is to compare and contrast the biodiversity of

  2. The comparison of bacterial content in a range of milks.

    Exposure to exterior bacteria-results in contamination and inaccuracies. To prevent this the samples must be kept well away from possible sources of contamination-e.g food products or yeasts (that could increase the bacterial growth) etc. Also, it would be a good idea to wash your hands before each experiment, to eliminate contamination when handling the equipment.

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