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 about K-12
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.Full Answer >
According to Science Buddies, good ideas for environmental science fair projects are "The Big Dig" and "Air Particles and Air Quality." "The Big Dig" measures whether materials that are dumped into landfills are biodegradable. "Air Particles and Air Quality" determines the quality of air pollution in different city locations.Full Answer >
Some ideas for middle school science projects include finding out what plants grow in which soil pH level and discovering the electrical conductivity of certain soil types, says Live Science. Other science projects include discovering natural water filters and the most effective plastic wrap to prevent evaporation, according to About.com.Full Answer >
Ideas for a 7th grade science project include using common household materials to make clouds or self-inflating balloons. Interesting projects can be made with very little expense.Full Answer >