Seventh Grade Science Fair Ideas
Seventh grade science focuses on advanced scientific subjects, but does so in an easily comprehensible way. Science fair ideas for seventh grade students should address these advanced topics using scientific methods. There are many angles you can take for a seventh grade science fair project, so choose the one that you feel you can perform best.
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Investigation
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An investigation project should showcase your ability to employ research methods to answer a question of interest. You begin such a project by posing a question and giving a method with which to answer that question. For example, certain brands of candy come in packages that contain many different colors of the same candy. You may wonder if the colors of candy in these bags are equal. You can perform a statistical investigation by purchasing many bags of this candy and using statistical methods to evaluate whether some colors of the candy are more common than others.
Model
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Models make fun and informative science fair projects for seventh-grade topics. A model project should mimic a scientific phenomenon, but on a small scale. Your model should give viewers a good idea of how the phenomenon occurs. For example, you can model global warming's effect on the ocean levels by putting a block of ice in a bowl of water. Measure the water level before and after the ice melts. Explain what this predicts about the world's ocean levels after glaciers melt.
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Correlation
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A correlational study investigates how two variables are related. The word "correlation" implies that when one thing changes, so does the other. Such a project should investigate the relationship between two phenomena. For example, you may believe that a food's pH level affects the taste of the food. You can create a correlational study project for your science fair by using a pH kit to measure various foods' pH levels, and then tasting them. Rank the foods in terms of a variable (sweetness, for example) and see if there is a relationship between the variable and its pH level. Report your findings.
Observational
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Your observations of scientific phenomena or objects can make a fun science project. This type of science fair project should allow you to answer a question simply through observation and note-taking. Since you have likely learned of many different scientific phenomena during the seventh grade, you may try combining sciences to see what happens. One example would be combining biology and physics by observing how organisms react under magnetic fields. You can create a magnetic field using what you learned in physics, and observe single-celled organisms such as amoeba and flagellum under a microscope. Observe how the organisms react under different conditions and report what you find.
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