The Top 70 Science Fair Projects From Kindergarten to High School

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The science fair is a great opportunity for children of all ages to get their toes wet in the wonderful world of science. In fact, it can be a very fun and rewarding experience for kids. However, the hardest part is probably deciding what to do for your science fair projects. First and foremost it is important to choose something that is age appropriate. With that in mind, check out below for the top 70 science fair projects from kindergarten to high school.

Kindergarten – 1st Grade Science Fair Projects

Kindergarten and 1st grade are a great time to get kids into science. In fact, it is never too early to introduce science to young kids. Obviously, as the kids are still young, you need to scale the projects to their ability level. In addition, adults should help supervise the activities. However, this doesn’t mean doing the whole science fair project for them. Rather let them explore and lead, and just be there to help them along. With that in mind, check out below for several great science fair projects for kindergartners and 1st graders.

70. DIY Bouncy Balls

Learn about polymers and have a lot of fun at the same time by making your own bouncy balls!

69. Exploring Density with Salt

Learn about density in liquids by exploring why oil and water don’t mix.

68. Lemon Volcano

Instead of doing the same vinegar volcano that everyone does, try a lemon volcano! In the process learn about chemical reactions!

67. Regrow Vegetable Scraps

Teach young kids about plants and how they grow with vegetable scraps.

66. Shiny Pennies

Learn about oxidation. Try using different acids such as lemon juice, lime juice, salsa, and vinegar. Also, try keeping the pennies in the acid for differing times.

2nd – 4th grade Science Fair Projects

65. Bleeding Blossoms

Explore capillary action and absorption in this science fair project idea.

64. Cartesian Divers

Learn about the concept of buoyancy with this classic science fair project idea.

63. Chromatography Art

Learn about the science of the separation of colors.

62. Density Tower

Learn about density when you can stack different liquids on top of each other without them mixing!

61. Dry Erase Figure

Learn what a hydrophobic substance is with this science fair project idea.

60. Kinetic Sculpture

Learn about cams and gears.

59. Magic Rollback Can

Learn about the relationship between kinetic and potential energy in the science fair project.

58. Magical Plastic Bag Experiment

Learn about the science behind polymers.

57. Magnetic Field Sensory Bottle

Learn about the relationship between metals and magnets.

56. Spinning Tops

Learn about centrifugal force and friction by building a spinning top.

5th Grade Science Fair Projects

55. Articulated Hand

This is one of the best science fair project ideas for kids who are interested in biology. It gives them a great opportunity to learn about the human anatomy, joints, and how the hand moves.

54. Coffee Can Camera Obscura

This science fair project gives kids the opportunity to make a simple camera obscura out of an old coffee can.

53. Crystal Landscapes

Open up kids imagination by growing advanced crystal structures.

52. Electromagnetic Train

Introduce students to the idea that electricity and magnetism are closely related.

51. Fake Lung

Similar to the articulated hand, this science fair project is great for kids interested in biology and learning how the lungs work.

50. Tiny Dancers

A great introduction to simple electromagnetic motors.

The ideas for the kindergarten to 5th grade science fair project ideas were taken from the following source.1)Babble Dabble – 20+ Science Fair Project That Will Wow The Crowd

Middle School Science Fair Projects

When kids get into middle school, they have the opportunity to also step up the level of their science fair projects. With that in mind, check out some great age appropriate science fair projects below.

Science Fair Projects for 6th Grade

49. Balloon Hovercraft

This is one of the best science fair projects to teach students the concept of friction. As long as their is air in the balloon and it is blowing, they can easily push it across a table. However, when you run out of air, the hovercraft quickly stops.

48. Graphite Circuit

A graphite circuit is a simple, safe, and great way to introduce kids to electricity. Since graphite is a weak electrical conductor, it is a great science fair project to allow kids to test the effects of different amounts of graphite, thickness of graphite lines, as well as length of the lines.

47. Lava Lamp Science Project

By making your own lava lamp explore the scientific concepts of density and polarity.

46. Pop-Top Rockets

This simple experiment shows the power of chemical reactions in action by launching a rocket into the air.

45. Skittles Science Fair Project 

This is a great science fair project to show the concept of diffusion as well as concentration in a liquid. In addition, it looks really cool to see the colors of the skittles spread!

Science Fair Projects for 7th Grade

44. Copper Plated Coins

By using some simple ingredients such as vinegar and copper coins,  mixed with a bit of electricity, this science fair project helps introduce the principle of electrolysis.

43. Paper Airplane Launcher

Discover the ideas of lift and aerodynamics through this simple science fair project idea.

42. Rubber Band Helicopter

Similar to the airplane launcher, kids can discover the concepts of aerodynamics. What makes it even better, is that if they add two propellers that they will get double the lift force!

41. Splitting Water

This simple science fair project idea is a great way to introduce kids to the idea that water is actually made up of two parts (hydrogen and oxygen).

Science Fair Projects for 8th Grade

40. Carbon Sugar Snake

Using simple ingredients, this science fair project introduces students to chemical reactions dependent on heat.

39. Dancing Salt

This science fair project introduces kids to the idea that music creates waves and vibrations. In addition, it is cool to watch the salt “dance” to different genres of music.

38. Penny Battery

Discover the magic of electrochemical reactions, by making batteries with pennies, felt, and a simple salt water solution to power a digital clock in this great science fair project idea.

37. Plant Light Maze

Learn the relationship between light and plants. Try creating different style of mazes to see how the plants weave around to get to the light.

Ideas for the middle school science fair projects were taken from the following source.2)Kiwi Co – Middle School Science Fair Project

High School Science Fair Projects

High school science fair projects are the next level up for kids to explore science. Now they have the chance to bring in more original ideas into the mix. With that in mind, the following science fair project ideas should be used as starting points. Use them to brainstorm some new and wonderful ideas. Perhaps what ever you discover might be of a great benefit to society!


36. Test the effects of the pH level of a solution on the corrosion of iron and copper. You can expand on this by exploring different methods of corrosion prevention.
35. Compare the efficiency of various octane fuel levels.
34. Investigate the role of enzymes and yeast in the fermentation or cheese-making process.
33. Test the chemical properties and physiological impact of saturated, unsaturated, and trans fats.
32. Compare the properties and effects of artificial sweetener vs. sugar or other natural sweeteners.
31. Experiment with types, effectiveness, and the impact on the nutritional value of preservatives in food.
30. Analyze the by-products of gasoline.
29. Use indophenol to test the effect of different cooking methods on the depletion of vitamin C in food.
28. Experiment with different methods of water purification.

Earth Science

27. Experiment with methods of flood management and containment.
26. Work with methods for forecasting weather.
25. Determine chemical makeup of rain in your area and the possible hazardous effects.
24. Explore methods of erosion prevention.
23. Investigate the effects of sunspots on weather patterns.

Environmental Science

22. Work with methods of processing/recycling non-biodegradable items.
21. Experiment with expanded uses of solar energy.
20. Which type and color of roofing material provides the most energy efficiency?
19. Investigate methods of improving home insulation.
18. Test methods for cleaning up and neutralizing the effect of oil in salt water with this oil spill cleanup kit.
17. Compare or develop methods of hydrogen production and storage for use in fuel cells.
16. Test for harmful effects of pesticides.
15. Experiment with design and function of wind turbines or water wheels.

Life Science

14. Test the effect of different temperatures on mold growth.
13. Compare the effect of antibiotics on bacteria.
12. Experiment with plant genetics such as through plant hybrids and cross-breeding.
11. Test factors like smoke or pollution that might affect transpiration rates for plants.
10. Investigate the effects of increased oxygen or carbon dioxide concentration on plant germination.
9. Test the effect of ultraviolet radiation on bacteria growth.
8. Find out the differences in properties and effects of organic vs. chemical fertilizers.
7. Test the effect of different types of bread on mold growth.

Physical Science

6. Study acoustic models and methods of noise control.
5. Experiment with the effect of storage temperatures on batteries.
4. Compare the bending strength and durability of different building materials.
3. Test the effects of magnetic and electromagnetic fields on living organisms such as brine shrimp.
2. Experiment with building materials that are fire-preventative.
1. Design a project in advanced robotic programming.

Ideas for the high school science fair projects were taken from the following source.3)Home Science Tools – HIGH SCHOOL SCIENCE FAIR PROJECT

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