7th Grade Science Fair Projects take a more realistic and in-depth approach, necessitating more complicated experiments that address realistic questions or issues through experiments. Topics may include solar systems, glow-in-the-dark experiments, unexpected chemical reactions and more!
Does caffeine really increase productivity in workers? This experiment tests it with mild forms of caffeine.
Balloon Car
Recycle recyclable materials into an air-powered car! Learn physics concepts while competing against your friends and family members.
Examine your cars on smooth surfaces like tile or short nap carpet to determine how far they can travel before extra friction hinders their progress. Experiment with different materials for wheels and axles for an added challenge.
This fun science fair project helps students grasp Newton’s third law of motion – that for every action there is an equal and opposite reaction – while testing force of air through straw nozzle against resistance of car’s resistance. They may also experiment with changing variables like diameter of straws to enhance results.
Geodesic Dome
Geodesic domes are approximately sphere-like or partially sphere-like structures composed of interconnecting triangles. A well-known example is EPCOT’s Spaceship Earth dome at Walt Disney World in Florida; climbing domes also commonly appear on playgrounds. This project offers students an excellent way to learn geometric shapes and structures while simultaneously demonstrating the strength of triangles.
Children can make geodesic domes out of materials found around the house to use as houses for action figures or dolls, garages for their trucks and cars or decorative sculptures. As part of this activity, they gain an understanding of how size affects strength-to-weight ratio of domes.
Parachutes
Parachutes have many applications in space exploration, dropping cargo from aircraft, and extreme sports. In this science fair project, you’ll test various sizes of parachutes to ascertain whether increasing air resistance increases with canopy size or decreases descent speed.
Gather all the materials and prepare to conduct the experiment. Select a high surface such as a secure balcony or playground platform for testing the parachutes, taking along a stopwatch to time results, then dropping one parachute at a time from equal height and testing its slowest fall by dropping weighted objects onto it to see which slows it the most smoothly.
Oven
Students in 7th grade can learn heat transfer concepts with this simple solar oven science fair project for 7th grade science fairs. Not only will they understand more about renewable energy and sustainability; but this hands-on experiment can even make tasty treats!
Students construct a solar oven using cardboard boxes, foil and plastic wrap in order to harness the sun’s energy and understand thermal energy, reflection, convection and other physical concepts such as thermal convection. This culinary science experiment also serves as a great learning opportunity.
Kids can explore microbial growth on everyday objects with this engaging science fair experiment. By swabbing household and school supplies, students will uncover what lives on these everyday touches; maybe in time they’ll text like scientists!
Water Swing
Explore buoyancy through this straightforward experiment using household items. Students observe which objects sink and which float, and can even observe which can both float and sink simultaneously.
This experiment requires adult supervision and offers children a hands-on opportunity to explore gravity and water movement through glassware, while helping them gain a better understanding of capillary action.
Explore centripetal force with this enjoyable science fair project, in which children try to safely swing glasses of water over their heads without spilling (we recommend doing this outside as it could get messy!). Additionally, students can test how different bag materials affect how far someone can bend a stream of water.
Instant Ice
Through this intriguing experiment, students discover how instant ice forms. This science fair project requires minimal supplies but makes a big impactful statement about instantaneous freezing processes.
This science experiment seeks to test how various materials behave as insulators on an ice cube and prevent its melting. Students will also investigate how temperature and mass influence how quickly an ice cube melts.
To perform this experiment, students will need to supercool water bottles in the freezer using a timer and one small action will trigger ice crystal formation in one or more bottles.