Question: November 2011 Archives

• January 2013
  • Wed., 9 – Can we be affected by sounds we cannot hear?
     
• December 2012
  • Wed., 19 – Why do our fingers and toes wrinkle up after a long time in water?
     
  • Wed., 12 – Where do butterflies go when it rains?
     
• November 2012
  • Wed., 21 – If an airplane's wings provide the lift that allow it to fly, how can a plane fly upside down?
     
  • Wed., 14 – Why don't fish like tuna and flounder, that spend their whole lives in the ocean, taste salty?
     
  • Wed., 7 – Why would it better to launch a rocket from a site closer to the equator?
     
• October 2012
  • Wed., 24 – Why do turkeys have dark and white meat?
     
  • Wed., 17 – Why do locations that are relatively close have high tide at different times?
     
  • Wed., 10 – If you place a damp paper towel over a dish of salad in the fridge, why does the towel freeze?
     
• September 2012
  • Wed., 26 – Why does lumber rot if you leave it in the ground, but potatoes don't
     
  • Wed., 12 – What would happen if we removed the locks from the Panama Canal?
     
• August 2012
  • Wed., 1 – Why can we tolerate drinking hot liquids when the same liquid would probably scald us if applied directly to our skin?
     
• July 2012
  • Wed., 25 – Can you get sunburn through ordinary glass?
     
  • Wed., 18 – Can fish hear sounds that are made above the water?
     
  • Wed., 11 – Why wouldn't identical twins have identical fingerprints?
     
  • Wed., 4 – How can weeds grow up through 5cm of asphalt in sidewalks?
     
• June 2012
  • Wed., 13 – True or false: The hotter the night, the louder the crickets
     
  • Wed., 6 – Why do bubbles form in a glass of water that's left on the counter?
     
• May 2012
  • Wed., 30 – When you photograph a person with a flash, you might get 'red eye' but if photograph your dog, you might get 'blue eye'. Why is that?
     
  • Wed., 9 – Why are eggs egg-shaped?
     
  • Wed., 2 – Do refridgerators use more energy when they are empty or full?
     
• April 2012
  • Wed., 25 – How do seeds know which direction to send up their shoots?
     
  • Wed., 18 – When you take a cake out of the oven, the air inside the oven doesn't burn you, and touching the top of the cake doesn't burn you but touching the metal pan does. If they're all at the same temperature, why is there a difference?
     
  • Wed., 11 – In large lakes, you see can see the water oscillate from side to side. What causes these seiches?
     
  • Wed., 4 – When you pour some liquids such as oil or honey from a distance onto a plate, the stream will start to circle onto the plate. Why does that happen?
     
• March 2012
  • Wed., 28 – When you pump up a bike tire with a bicycle pump, the valve will heat up. Why is that? (If it because of the air passing through the valve, why doesn't the valve heat up when you fill your car tire at the gas station?)
     
  • Wed., 21 – When an orchestra warms up, the pitch of the wind instruments increases and the pitch of the strings instruments decreases. Why is that?
     
  • Wed., 14 – Why will a heavily loaded raft drift more quickly with the current in a river?
     
  • Wed., 7 – If you place a block of wood in a glass of water, and put that glass in an elevator, will the block float higher in the water as the elevator descends?
     
• February 2012
  • Wed., 29 – The moon experiences the gravitational pull from the earth and the sun, but the sun's pull is twice as powerful as the the earth's. Why then, doesn't the moon get pulled out of our orbit?
     
  • Wed., 22 – When lightening hits a tree, sometimes it scars it, sometimes it blows the bark off and sometimes it blows it up. What accound for those varying effects?
     
  • Wed., 15 – Why do some candles flicker, even if there is no breeze?
     
  • Wed., 8 – Why do the blood vessels in your eyes become more visible when you're tired?
     
  • Wed., 1 – Why does skin dry out in the winter?
     
• January 2012
  • Wed., 25 – Where would you expect a traditional pendulum clock to run the slowest:?
     
  • Wed., 18 – If the earth were a perfect sphere, it would be completely covered by the ocean. From 50 m to 25000 m, how deep would that ocean be?
     
  • Wed., 11 – Why does snow at the base of apple trees melt faster than it does elsewhere?
     
  • Wed., 4 – Does the earth lose heat as it travels through space?
     
  • Wed., 4 – Why does the colour of sunsets vary?
     
• December 2011
  • Wed., 21 – An old wives tale says a paste of bicarbonate soda and water will cool a burn. Is that true?
     
  • Wed., 14 – Why do things smell more when they're wet?
     
  • Wed., 7 – Will a log that's decomposing produce as much carbon dioxide, over time, as a log that is burned?