The Best Science Fair Projects

Best Science Fair Project Ideas

DNA Extraction
Genetic study has been the subject of choice of many students and you can carry out the process of DNA extraction in many ways. DNA extraction projects are done for proving polymorphisms and for comparing various strands of DNA of different specimens. Quantitative and qualitative analysis of DNA is also a good topic for science fair project. Here we shall depict the quantitative analysis of DNA by the technique of Polymerase Chain Reaction (PCR). First, extract the DNA sample from the selected specimen (leaves or animal parts) by the given protocol. Follow the process step by step and make sure the chemicals are mixed in accurate quantity. A specific time is also allotted for extracting DNA. Now the sample is set in a PCR machine where the strands get multiplied. After completion of PCR, the sample is run on an electrophoresis gel bed. A standard is used for recognition of the DNA bands on the gel bed when viewed under a UV spectrometer. Thus, quantity of DNA present in the specimen is analyzed by the number of bands produced. Note down the procedures while performing the experiment so that you do not lose the data. End your project with a logical conclusion and with a good presentation.

Dry Ice Experiment
Experiments with dry ice are interesting and easy to perform. When carbon dioxide is frozen and compressed, it transforms itself to a state known as dry ice. Dry ice is usually kept in laboratories for performing different types of experiments for detecting pressure and change in state of matter. First we shall explain the formation of smoky water with dry ice and then proceed with some more experiments. Boil water in a container and place dry ice in it with the help of tongs. When dry ice comes in contact with heat, it gradually starts to sublime and in the process, a lot of carbon dioxide is released. A smoky cloud hangs over water giving the impression that smoke is coming out from water. Thus, you can conclude that dry ice will continue to sublimate when exposed to heat. You will be amazed to know that dry ice could be used for inflating a balloon. Stretch the mouth of a flaccid balloon and insert a few cubes of dry ice in it. Rub the balloon with your palm or keep it under the sun. You will notice that the balloon gradually inflates due to evaporation of dry ice and generation of carbon dioxide in gaseous form.