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Physics Experiments for Class 9

Students in the ninth standard should undertake experiments in Physics to be able to understand the basic Physics concepts better and to hone their communication skills and presentation skills. Below is given a list of interesting Physics experiment ideas that 9th standard students can carry out in their schools or at home:

  1. Can You Hear Me Now: to determine the relationship between air pressure and sound. The hypothesis is that as the air pressure decreases sound will decrease at a faster rate. The project is about identifying the relationship between air pressure and sound by adjusting the air pressure in a vacuum chamber while the sound remains constant.
  2. How Temperature Affects Magnets: this project is to find out if temperature would affect magnetism. After testing the magnets in four different temperatures, it was found that when the temperatures were made lower, the magnets picked up more paper clips.
  3. Catching Rays
  4. Creating Electric Current with a Magnet
  5. The Invisible Force
  6. Buoyancy 101: to determine whether a change in water density, as its temperature is raised from 5 degrees C to 95 degrees C, will cause a model boat hull to sink lower in the water to a measurable degree.
  7. Does the Rate of Heating Have an Affinity for Salinity
  8. Ott or Not: To determine which light bulb (150, 100, 75, 60, 40, 25 watt Incandescent, 13 and 27 watt Fluorescent or 13 watt Ott light) produces the most heat.
  9. Singing Goblets
  10. How to make a simple electric motor
  11. How to make a solar oven
  12. Does a longer paper airplane fly farther than a wider one?
  13. Does hot water freeze faster than cold water?
  14. Fastest way to cool a soda
  15. Kinetic Energy
  16. Experimental Investigation of High Frequency Plasma
  17. Ringing Saturn
  18. Exploring Evaporation through Colors
  19. The Focalization of Sound
  20. Specific Heat in Materials
  21. Quantifying the Effect of Tungsten Illumination on Color Rendering of Low-Pressure Sodium
  22. Swing of Pendulum: to find out whether the length, amplitude, or weight of a pendulum affected its period of motion.
  23. Creating Sound with Heat: to understand and demonstrate the thermo acoustic phenomenon which uses heat to initiate the oscillation of gas without moving parts.
  24. How Do Various Nonwoven Medical Gowns Compare as Barriers Against UV Radiation
  25. Chemiluminescence
  26. Effect of Ammonia Gas on Copper Nano wire Sensors
  27. Brass Instruments and Artificial Lips
  28. Which metal is the best conductor of heat?
  29. How fats does light travel in air vs. water?
  30. What happens to a current-carrying wire in a magnetic field?
  31. How Accurate Is Parallax
  32. Doppler Effect and the Fiber Gyroscope
  33. Radioactive Attenuation and the Inverse Square Law
  34. Effect of Color on the Characteristics of a Heat Barrier Material
  35. Effect of Electric Fields on the Heat of Vaporization of Water
  36. Direct Solar Pool Heater: to demonstrate the feasibility of heating a pool using a Direct Solar Pool Heater (DSPH). The hypothesis seeks to see whether a pool of water with the DSPH in place will warm up to a higher temperature than the same without the DSPH because the black fabric of the DSPH absorbs more and reflects less solar energy than the light colored pool walls or bottom.
  37. Wood Business
  38. How to make a rubber band car
  39. How to reduce friction
  40. Measuring sugar in soda
  41. Nonlinear Oscillations in Mechanical Systems
  42. Cooler Roofing: to show that white plastic roofing reached the lowest maximum temperature while white bitumen reflected the most light.
  43. Does Horizontal Speed Help
  44. Effect of a Magnetic Field and Applied Voltage: The main concept in MHD is the interplay between an electric field and magnetic field. Both act on a moving conductive fluid and cause it to rotate by creating Lorentz force on this fluid.
  45. Effects of Rotational Inertia on a Fastball: to see what effects rotational inertia would have on the velocity of a softball pitched fastball
  46. Across the Universe
  47. A Dying Star
  48. Analysis of Voice Frequency across Ethnic Identities
  49. Simulation and Animation of the n-Body Problem in Two-Bodies
  50. Effect of UV Light on Depressions on CH Plastic Films
  51. Cosmic Ray Shower Array Reconstruction
  52. Effect of Reduced Pressure on the Yield Volume of Popcorn
  53. Study of the Qualities that Determine Maximum CPU Cooling Efficiency
  54. Evaporation Sensation
  55. Glassic Music: the goal of this experiment was to determine whether objects of greater mass would fall through air at a faster acceleration rate than objects of a lesser mass.
  56. How Do Varying Amplitudes affect pendulum motion: to determine how amplitude, weight, and length affect the period of motion of a pendulum.
  57. The Gauss Rifle: When angled in an upward position the speed gradually decreased because the force of gravity was acting against it. When angled in a downward position the speed increased gradually as the force of gravity added on to the acceleration form the device.
  58. Tired of Noise: to find out the best sound absorbing pattern.
  59. Long and Short Wavelength Colors
  60. Insulation Value
  61. Living Color
  62. Light Reflection and Refraction off Liquids
  63. Photo-electrochemical Cell
  64. Photometric Study of Eclipsing Binary Stars
  65. Proving Universal Gravitation by Warping Space-Time
  66. Reflections on Reflection
  67. How Do Different Color Filters Affect the Energy of a Laser Beam
  68. Effect of Bottom Reflectivity on Solar Pond Performance
  69. Using Sound to Measure Temperature
  70. How Temperature Affects a Magnet’s Strength
  71. Relativistic Stress
  72. Rubens Tube
  73. Seeing Through the Haze
  74. Selective Isolation and Manipulation
  75. Semi-classical Method to Predict Helium
  76. Sink or Float
  77. Solar Cells
  78. Sta-Netic
  79. Do Acoustic Tiles Really Block Sound
  80. An Analysis of Black Hole Thermodynamics
  81. Quantifying the Effect of Sky glow on the Visibility of Stars
  82. The Most Efficient Automobile Sunshade
  83. The Mathematics of Sympathetic Vibrations
  84. The Metal Meltdown
  85. Tricky Curie
  86. Which Diameter String Has the Purest Tone: to discover which set of violin strings will create the purest tone by testing three different sets of strings; results show that thinner diameter strings will create the purest tone.
  87. Frequency Relationship of Notes in Musical Harmony
  88. Radioactive Attenuation and the Inverse Square Law
  89. Observations of magnetic permeability of different materials
  90. Impact force of falling object
  91. The effect of solar activity on radio propagation
  92. Index of refraction of liquids versus amount of additive
  93. Making a static electricity bell
  94. Crystal growth rates versus solution strengths, temperature, etc
  95. Egg Floatation
  96. The mathematics of snowflakes
  97. Index of refraction of liquids versus temperature
  98. Plane Mirror Reflection Experiment
  99. Effects of temperature on bounce
  100. What effect does wind have on a baseball game?

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