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What are some ideas for ninth grade science fair projects?

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Some sample ninth grade science fair projects include examining the effects of chewing gum on people's concentration, determining which direction solar panels should face, using an acid test to tell some chosen minerals apart and conducting a test to determine whether ants prefer cane sugar or artificial sweeteners. Ninth grade science projects may be related to such areas as physical science, astronomy, life science, earth science, applied science, computer science and health science.

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Those interested in computer science might write a computer program or study the reach of wireless networking. Some other project ideas include the following:

  • Finding out how product packaging influences children
  • Determining if certain foods can boost people's moods
  • Investigating whether denser fruits are healthier to eat
  • Testing to see what types of household objects form crystals the best

The chosen science fair project should follow the scientific method's process, which involves coming up with a question, doing some research on the background of the topic, making a hypothesis (or educated guess), conducting an experiment to test the hypothesis, analyzing the data, coming up with a conclusion and communicating the results.

One topic to explore for a ninth grade science fair is whether or not eye color determines the scope of a person's peripheral vision. The hypothesis is that people with a darker iris color have pupils that widen more to red light. The question to answer is whether or not a widened pupil leads to better peripheral vision. This project requires multiple test subjects with several different eye colors. It is important to record the field of vision observed from each subject in varying degrees of light saturation to get an accurate answer to the hypothesis.

Another project explores how a magnetic field affects living organisms. The test subjects would be small animals, such as brine shrimp or fruit flies. Materials include strip magnets and containers for the test subjects. There are two or more groups of subjects tested to make note of the differences and similarities of each test group. One group would not have magnetic strips attached to the containers, while the other group would. Any other groups might test the affect of varying distances of magnetic field exposure.

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