Science Fair Project Topics

1. Is plant growth affected by how closely together the seeds are planted?

2. Which type of light (fluorescent, incandescent, black light, candle, sunlight) is most effective for the growth of plants?

3. What kind of soil is most effective for plant growth?

4. Do plants grow better with tap water or distilled water?

5. Does the depth a seed is planted affect its ability to sprout?

6. Which brand of fertilizer is most effective for the growth of plants?

7. Do vitamin pills dissolved in water affect the growth of plants?

8. Which concentration of aspirin is most effective for keeping cut flowers fresh?

9. Does seed size affect the rate of germination (how quickly they sprout)?

10. Is hydroponics (growing plants in water) as effective as growing plants in soil?

11. Which brand of diaper is the most absorbent?

12. Which type of egg (jumbo, grade A, brown, etc.) can support the most weight?

13. Which brand of fishing line is the strongest?

14. Which type of fabric (wool, cotton, nylon, polyester) is best for liquid absorption?

15. Which type of fabric (wool, cotton, nylon, polyester) is the most durable?

16. Which type of fabric (wool, cotton, nylon, polyester) is the most flammable?

17. Which type of fabric (wool, cotton, nylon, polyester) insulates heat most effectively?

18. Which materials (plastic, glass, paper, metal, styrofoam) work best for keeping liquids hot?

19. Which geometric shape can support the most weight?

20. What color crayon melts the fastest?

21. Which type of wood is the strongest?

22. Which type of light (incandescent, black, fluorescent) emits the most heat?

23. Which truss bridge design holds the most mass?

24. Which kinds of soils will absorb the most water?

Science Fair Project Topics

25. Which type of wood burns the fastest?

26. How will slope affect the distance a match box car travels?

27. Which parts of the human body (lips, forehead, cheeks, neck, arms, hands, back, abdomen, legs, feet) are the most sensitive to touch?

28. Which type of baseball bat will hit a baseball the farthest?

29. Does temperature affect the strength of an electromagnet?

30. Does the type of metal affect the strength of an electromagnet?

31. Does the number of wraps of wire around an electromagnet affect its strength?

32. What is the effect of the size of the metal core on the strength of an electromagnet?

33. Does the length of string affect the period of a pendulum?

34. Does the weight of the bob affect the period of a pendulum?

35. To what extent does air pressure affect the height that a basketball will bounce?

36. What is the effect of different detergent solutions on the surface tension of water?

37. Does water temperature affect the spread of an oil spill?

38. Which brand of antacid (Tums, Rolaids, Pepto Bismal, Peptid AC) works best for the neutralization of stomach acid?

39. Which brand of plastic wrap is the strongest?

40. Which liquids hold heat the longest?

41. Does weight affect the speed at which an object falls?

42. Which brand of aluminum foil is the strongest?

43. What is the effect of temperature on the viscosity of liquids (how quickly they flow)?

44. Does the color of a candle affect how long it will burn?

45. What is the effect of different colored food colorings on the absorption of heat of water?

46. Can eggs withstand a greater force from one direction than from others?

47. How does wetting paper affect its strength?

Science Fair Project Topics

48. Does the amount of solute affect the rate of evaporation of a solution?

49. Does the type of solute affect the rate of evaporation of a solution?

50. What is the effect of caffeine on blood pressure?

51. How strong is human hair of different thickness?

52. Which brand of pen lasts the longest?

53. How hard/durable are different nail polishes?

54. Which brand of toilet paper is the strongest?

55. Which engine oil reduces friction the most?

56. Which brand of engine oil has the greatest viscosity (quickness of flow)?

57. What is the effect of left/right handedness on reaction time?

58. How can you fold paper to make it support more weight?

59. Which brand of soda contains the most carbonation?

60. Wind vs. light: Which causes quicker evaporation of water?

61. Which materials are best for cleaning muddy / polluted water?

62. Which material (soil, sand, clay) erodes the fastest?

63. Does music affect a person’s ability to concentrate / memorize?

64. Which material (sand, soil, wood chips) will melt ice the quickest?

65. Which brand of aspirin dissolves the fastest?

66. Does the temperature of water affect the rate of erosion?

67. Under which conditions (sunny, dark, humid, cold) will food decay the fastest?

68. Which type of wire (copper, steel, brass, aluminum) is the strongest?

69. Which material on a hockey stick blade (plastic, wood, or fiberglass) will hit a hockey puck the farthest distance?

70. Which brand of tennis balls (Penn, Wilson, hardcourt, indoor only, etc.) will bounce the highest?

71. Which brand of plastic garbage bags can withstand the most weight?

72. Which type of cooking oil (coconut, sunflower, vegetable, etc.) is the most effective lubricant?

Science Fair Project Topics

73. Which brand of paper towel is the strongest?

74. Which brand of clear tape is the strongest?

75. How does the angle of a ramp affect how quickly a ball will roll down it?

76. What effect does the weight of a bat have on how far a ball can be hit?

77. Which type of skateboard bearing spins the longest amount of time?

78. Does the color of a liquid contribute to its ability to absorb heat?

79. How does surface area affect the evaporation rate of liquids?

80. What is the most effective material for a parachute (paper, plastic, fabric, etc.?

81. How does heat affect the dissolving rate of Alka-Seltzer tablets?

82. The effect of shampoos on the strength of human hair.

83. Which materials are most effective in a sandbag for blocking floodwaters?

84. Which material will best protect an egg that is dropped from a roof?

85. Does the speed of a ball rolling down a ramp change with different ramp surfaces?

86. Does the voltage applied to an electromagnet affect its strength?

87. Which brand of glue is the strongest?

88. Which brand of golf balls bounce the highest?

89. How is paint drying affected by temperature changes?

90. Which holds heat the longest; water, sand, or soil?

91. Does the concentration of salt water affect buoyancy (how much/easily an object floats)?

92. Does heat affect the expansion of different materials?

93. Does the temperature of water affect its weight?

94. Does temperature affect the expansion of a balloon?

95. Which snowboard wax is the most slippery?

96. Will the type of surface affect how high a ball bounces?

97. Do additives affect the rate at which water evaporates?

Science Fair Project Topics

98. Does the size of a container affect the rate at which water evaporates?

99. Does the material from which a sponge is made affect the amount of water being absorbed?

100. Is the amount absorbed by a sponge affected by the type of fluid being absorbed?

101. Does the speed of a cart rolling down a ramp change with the mass of the cart?

102. Does the speed of a cart rolling down a ramp change with the size of the wheels?

103. Does the speed of a cart rolling down a ramp change with the placement of mass in the cart?

104. Is recycled paper as strong as paper in its first use?

105. Does temperature affect the strength of rubber bands?

106. Does temperature affect the strength of different types of glue?

107. How do different soils affect the stability of trees?

108. Which brand of facial tissue is the strongest?