Some easy investigatory science project ideas include attempting to purify used cooking oil, making biodegradable plastic and increasing the shelf life of fruits and vegetables. An investigatory science project is any project that starts out with a question and uses the scientific method to attempt to answer that question.Know More
One easy experiment is to investigate possible strategies for purifying used cooking oil. Cooking oil typically goes to waste and is not disposed of properly, but this experiment researches ideas for filtration or purification. Different processes of purification are tested on used oil samples, which are then tested against samples of fresh oil in terms of color, odor, cleanliness and viscosity.
Another easy experiment is to test different materials as effective components in a biodegradable plastic bag. Plastic bags can take up to 1,000 years to degrade completely, causing serious threats to the environment. This project attempts to find effective starches to use in a more biodegradable bag. Different starch components can be tested in terms of biodegradability, tensile strength, bendability and other properties.
Finally, examining factors that increase the shelf life of fruits and vegetables is another easy investigatory project. This experiment attempts to find a coating or other solution to more effectively maintain freshness in certain fruits or vegetables. Other experiments have focused on bananas with a Chitosan coating, but students can try different combinations of solutions, fruits and vegetables.Learn more in K-12
One idea for a fun middle school science project is investigating which ratio of vinegar to baking soda produces the best chemical volcano eruption. Other ideas include examining whether different brands of soda spew the same amount when shaken equally, whether different brands of potato chips are equally greasy and whether different types of bread grow different types of mold.Full Answer >
The National Science Fair, know as the Intel International Science and Engineering Fair since 1997, lists past winners and their projects on the Intel ISEF page of the Society for Science website. As of 2015, the website lists the winners from 2011 to 2014.Full Answer >
The best science fair projects for seventh graders are challenging and inspiring, such as, determining if weather affects a person's mood, how stress affects the body or how to make a cloud. Any project that answers a question that has to be conducted with a series of tests or shows how to duplicate a natural occurrence is considered a good science fair project for a seventh grader.Full Answer >
According to Parenting, some of the top 10 best science fair projects include an experiment examining which type of soda is most damaging to teeth, the relationship between taste and smell, creating a fabric that can conduct solar electricity and looking at the way worms help create compost. Other good science fair projects include looking at the relationship between cars and pollution, and separating out ink colors.Full Answer >