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Top 100 Questions

  1. Are Sedna and Quaoar two new planets? (more)
  2. I would like to know if the aluminum in antiperspirants... (more)
  3. Why do brown or blue eyes turn green in young adulthood? (more)
  4. In the book Cat's Cradle by Kurt Vonnegut, Jr., there is a... (more)
  5. How does an analog ammeter works and how could I make one? (more)
  6. Is it true that in total a bee's venom is acidic while a wasp's... (more)
  7. Is there a way to make a simple smoke bomb that isn't poisonous... (more)
  8. What is an aluminum lake? Does it contain aluminum? (more)
  9. How can we re-magnetize old magnets when they've lost their... (more)
  10. Are cats left- or right-pawed? What percentage are left... (more)
  11. How many satellites orbit the earth? How many are used for... (more)
  12. What is the amount of force in foot pounds behind the average... (more)
  13. Is the line spectrum that is produced by a fluorescent tube the... (more)
  14. How much liquid is in the stomach? (more)
  15. What is your personal view of global warming? Do you believe... (more)
  16. At a bar a fellow was doing a bar trick in which he asked anyone... (more)
  17. I know that the genes for red hair and for blonde hair are both... (more)
  18. I know that superconducting wires present their zero-resistance... (more)
  19. Why are a duck's feet coloured orange? (more)
  20. How much heat energy (watts) is released from the human body? Is... (more)
  21. Why does salt melt ice? (more)
  22. Do you know of any analysis or test data available to show that... (more)
  23. Is water from a dehumidifier de-ionized? The owner's manual for... (more)
  24. How long would it take for the Earth to freeze if the Sun burnt... (more)
  25. Who REALLY discovered oxygen? According to an National Public... (more)
  26. Are Canadian dimes made out of zinc? What about quarters,... (more)
  27. I was and I still am wondering if there are any really complex... (more)
  28. If Entamoeba Coli is present in the human intestine can other... (more)
  29. Why are soccer balls coloured black and white? I heard it has to... (more)
  30. Why does an ice cube melt faster in tap water than salt water? (more)
  31. Why is the sound of fingernails scratching against a chalkboard... (more)
  32. What is the effect of sound on plants? I have come up with a... (more)
  33. How does medicine (for example, Contact) work in your stomach... (more)
  34. Are we the center of the Universe? Does it always appear to an... (more)
  35. I have spent 4-5 hrs. attempting to magnetize some iron (Fe)... (more)
  36. Why does lemon prevent the browning of apples? When browning of... (more)
  37. I am interested in the transmission of RF through different... (more)

  38. Is it possible for a wild koala bear to ignite as a result of... (more)

  39. Does water affect a magnet's strength? Do magnets lose their... (more)
  40. I have blue eyes and am the mother of a son who has blue eyes as... (more)
  41. In my science 9 class we recently had a discussion about... (more)
  42. What are water's special qualities, and how do they work? (more)
  43. We have an older pop machine at work with canned soft drinks. ... (more)
  44. Is it true that the moon moves away from the earth a few... (more)
  45. What is the efficiency of a typical jet engine? i.e. how much of... (more)
  46. Regarding the behaviour of a high-voltage spark. I have a device... (more)
  47. My son, age 12 is asking for a chemistry set for Christmas. This... (more)
  48. I'm a switcher. On January 7, 2003 Apple announced a new small... (more)
  49. I heard that if you set fire to methylated spirit, it will catch... (more)
  50. Why does a balloon travelling inside a car seem to violate... (more)
  51. I am a year 5 teacher. I was wondering if it would be ok if I... (more)
  52. What is the significance of Science in our society? (more)
  53. What is "time"? Does the word "time" in Physics have the same... (more)
  54. What is inside an atom? In between the electrons and the... (more)
  55. How long would it take for the next Ice Age to develop? (more)
  56. What is sugar? (more)
  57. I understand the concept of dominant and recessive alleles but I... (more)
  58. I would really appreciate it if someone could help me make sense... (more)
  59. Why does a digital camera need a shutter- I think it should be... (more)
  60. Is there a machine that will measure the amount of oxygen that... (more)
  61. How do "bath bombs" work? Why do they fizz when placed in water? (more)
  62. I'm doing a science project in which I'm trying to see if sound... (more)
  63. What are the urgent steps an undergrad must take to start... (more)
  64. I have conducted an experiment with a parachute. I was... (more)
  65. In winter in very cold countries like Canada and Finland, most... (more)
  66. Approximately how many nuclear tests do the americans alone... (more)
  67. Which substance plays the most important role in making a blue... (more)
  68. I do not know if this might relate to Global Warming, but I... (more)
  69. I imagine there must be a gene for lactose tolerance in mammals... (more)
  70. What does cytoplasm do in the cell? (more)
  71. Does the temperature of a magnet affect its strength? (more)
  72. Why does it take nerves so long to grow back, more than for skin... (more)
  73. If the sun is a heat source, and as the sun gets closer to the... (more)
  74. If you could dig a hole from one side of the earth to the other... (more)
  75. How long can someone sustain without sleep? What factors would... (more)
  76. Could you please tell me what is inertia? Will it bring us more... (more)
  77. How did scientists conclude that a major part of our genome is... (more)
  78. I am doing a science fair project to measure which type of... (more)
  79. What are some recent Canadian contributions to research and... (more)
  80. I spilled some iodine disinfectant on my vinyl tile floor. As... (more)
  81. What does the epiglottis do? (more)
  82. Why can't an insect grow large enough to terrorize a city? (more)
  83. When seperating hydrogen and oxygen from water by using... (more)
  84. What experience and education should I get for a career in... (more)
  85. Hi, I was just wondering, I wanted to get into the whole... (more)
  86. If splitting the atom can create a huge amount of energy, then... (more)
  87. I want to know how ascorbic acid (vitamin-c) is metabolised in... (more)
  88. I was just wondering what the ratio is between male and female... (more)
  89. What causes a titanium headed golf club to spark when striking a... (more)
  90. Does a magnetic and/or electric field have an affect on... (more)
  91. Can you really grow plants from the seeds found in Mammoth... (more)
  92. When a nuclear particle radiates either an Alpha, Beta or Gamma... (more)
  93. What it the chemical composition of styrofoam? What raw material... (more)

  94. I'm curious about the possibility of "real" ... (more)

  95. When does your skull reach its full, adult size? (more)
  96. What will happen if we use petrol in a diesel engine or vice... (more)
  97. I am curious. What if two magnetic field lines were to intersect... (more)
  98. Since the Big Bang we see (with Hubert Reeves and other... (more)
  99. Why is it that when calculating the volume of a pyramid, such as... (more)
  100. How many scientists does Canada have? (more)