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Science Experiments for Class 9

For students studying in the ninth standard, the following list of Science-related projects can be very useful. These will help them to learn more about the topics in general, allowing them to improve their presentation skills in the process.

  1. Study of accuracy of calculators
  2. The mathematics of snowflakes: to identify the basic forms of ice crystals that ultimately forms each snowflake and understanding the design and calculations of snowflake fractals.
  3. The effect of sound on plants
  4. Plants in different environments
  5. The effect of nicotine, air, yeast on mold growth
  6. Factors affecting the strength of hair
  7. Factors affecting the growth of bacteria
  8. Factors affecting the growth of molds or yeast
  9. The effect of solar activity on radio propagation
  10. Experimental exploration of the photoelectric effect
  11. Observations of magnetic permeability of different materials: to observe the magnetic permeability and use it to compare the magnetic permeability of different metals and nonmetals that you have access to.
  12. Magnetic Relaxation
  13. Index of refraction of liquids versus temperature
  14. Electrolysis of Water Without a Hoffman Apparatus
  15. Making and Testing a Simple Galvanic Cell
  16. Tracking Electrons
  17. The Chemistry of Copper Plating
  18. Production of Synthetic Fiber (Polymer)
  19. Index of refraction of liquids versus amount of additive
  20. Crystal growth rates versus solution strengths, temperature etc
  21. Experimenting with various separation techniques
  22. Make a universal reflector: A universal reflector is a mirror set that always reflects the light to its original source. You can use a laser pointer and show that regardless of where you stand in a room, reflection of the laser beam that hits your mirror set will always come back to you.
  23. Efficient methods of breaking down crude oil in seawater
  24. Experimenting with microbial degradation of petroleum
  25. Experimenting with biodegradability
  26. Find an ink that would decompose for recycling paper: design and perform experiments to compare different inks to find out which decomposes easily.
  27. Using solar energy to purify polluted or salt water
  28. Study of diffusion through cell membranes
  29. Growing plants and animals by cloning
  30. Regeneration in sponges, Paramecia, Planaria, etc.
  31. Salivary Amylase and Starch Digestion
  32. Study and experiment with Milk
  33. Do green plants need light to produce starch?
  34. Comparison of the Effects of Inorganic Catalysts and Enzymes on Peroxide Decomposition
  35. Comparing types of artificial light on plant growth
  36. Conditions necessary for the life of a brine shrimp
  37. Producing mutations in bacteria
  38. Producing mutations in yeast
  39. Best conditions for mushroom production
  40. Best conditions for the growth of ferns
  41. Determine the Thickness of Zinc on a Piece of Galvanized Metal
  42. Distillation of Water from an Aqueous Solution Using a Disposable Apparatus
  43. Candy Chromatography
  44. A Comparison of the Solubility of Carbon Dioxide in Water at Various Temperatures
  45. Determination of the Molar Volume of Carbon Dioxide
  46. A Penny’s Worth of Hydrogen
  47. Preparation and Properties of Oxygen
  48. Determination of the Relative Viscosities of Liquids
  49. Discover a Good Antifreeze
  50. Reactions Between Ions in Solution Using Consumer Materials
  51. Physical Properties and Intermolecular Bonding in Solids
  52. The effects of ultrasonic on bacteria count
  53. The effects of antibiotics on bacteria count
  54. Make Iron Sulfate, Hydroxide, Oxide
  55. A study of saponification reactions
  56. A study of esterification reactions
  57. Electrolysis of Potassium Iodide
  58. Magnesium Research
  59. Which fruits contain the most vitamin C?
  60. Compare fruits for their sugar content
  61. The effects of surface temperature on fingerprints:to investigate the effect of surface temperature on the quality of fingerprints obtained. The testing was done by extracting fingerprints from drinking glasses at various temperatures.
  62. How do different Types of Soil Affect the Growth of a Pinto Bean?
  63. What environmental factors favor decomposition by soil microbes?
  64. How hand-Eye coordination is influenced by age: to find out how hand-eye coordination improves as we grow older.
  65. Do singers have a larger lung capacity than non-singers: to find out if the members of a choir group have a bigger lung capacity than non-singers of the same age group.
  66. Cold water and your voice: to find out how drinking cold water will affect the ability of a person to sing; it is done by comparing the high notes a person can reach before and after drinking cold water.
  67. Effect of carbonated drinks on the erosion of tooth enamel
  68. Our ability to identify natural and synthetic scents: this experiment is conducted to determine if a person can differentiate between a natural scent and a synthetic scent.
  69. Effect of propeller size on thrust produced: to determine how the size of a propeller will affect the amount of forward thrust produced by it.
  70. How do magnetic fields affect the rate of flow of water?
  71. How does the bounciness of a golf ball affect the distance that it will travel?
  72. Relationship between the shape of a parachute and its drop velocity using triangular, square, rectangular and round parachutes.
  73. Analysis of soil samples for their components, ability to hold moisture, fertility and pH
  74. Will Nepenthes (pitcher plant) extracts contain enzymes that digest insect proteins?
  75. Test the effects of salt on canola and its transgenic lines (seed germination and plant growth).
  76. Which medium results in effective mould growth? Synthetic, semi-synthetic or natural?
  77. Test the effectiveness of antibacterial substances on E. coli.
  78. Determine if boiling water and the use of chlorine will kill coliforms to safe level
  79. Determine if energy released during chemical reactions can be stored by stopping it.
  80. Geothermal energy efficiency and negative effects on the environment
  81. Effects of temperature of a PEM fuel cell and electrolyser system
  82. Does chewing gum help you concentrate?
  83. Acid Test to tell minerals apart
  84. Do Plants grow better with sunlight or artificial light?
  85. Do Cooked Beans Grow?
  86. Make Electricity from a Potato
  87. What Foods Contain Starch What effect does music have on plant growth?
  88. Will vitamins affect the growth of a plant?
  89. Why Do Leaves Change Color in the Fall?
  90. How does table salt affect the boiling temperature of water?
  91. How is paint affected by temperature changes?
  92. How does temperature affect the elasticity of rubber?
  93. How does temperature affect the strength or adherence of glue?
  94. Plant tropisms and growth hormones
  95. Transpiration rates for different plants and conditions
  96. Sugar level in plant sap at different times and dates
  97. A study of territoriality in mice
  98. Study of the relation between vegetation and insects
  99. Study of air purification methods
  100. Efficient methods of breaking down crude oil in seawater

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