Wednesday, February 25, 2009
Cat Paw Preference
To test feline handedness, or pawedness as you prefer, Professor Cole had 60 randomly-selected cats reach into a glass tube for some rabbit meat. Of the 60, 35 showed a noticeable preference for one paw over the other (i.e., same paw used in at least 75 out of 100 tries). Of the 35, two-thirds were left-pawed. Cecil finds this interesting because he himself is a lefty, a much-oppressed minority. I haven't previously had much use for cats, but when I see one now I'll think: "Hey, bro!"
Paw/claw/whatever preference is actually pretty common in the animal world, having turned up in most species tested, including parrots (mostly lefties) as well as rats, monkeys, and chimpanzees (50-50 right versus left). Why should there be a preference? One plausible guess is that it helps the animals learn faster. Professor Cole noticed that cats with a dominant paw figured out how to get the rabbit meat out of the tube faster than the ambidextrous cats. Presumably if you practice constantly with one paw, you become more skillful than if you squander your playing time on two.
— Cecil Adams
Paw/claw/whatever preference is actually pretty common in the animal world, having turned up in most species tested, including parrots (mostly lefties) as well as rats, monkeys, and chimpanzees (50-50 right versus left). Why should there be a preference? One plausible guess is that it helps the animals learn faster. Professor Cole noticed that cats with a dominant paw figured out how to get the rabbit meat out of the tube faster than the ambidextrous cats. Presumably if you practice constantly with one paw, you become more skillful than if you squander your playing time on two.
— Cecil Adams
Bouyancy
Fingerprints
Hi! My name is Sara! And I am doing my project on Fingerprints.
There are three main types of fingerprints. The Loop, the Whorl, and the Arch. The Loop looks like a sideways loop. A Whorl looks like a bunch of bigger and bigger circles. And the Arch looks like a mountain. What type of fingerprint do you have?
I am trying to find out two things. One, what percentage is there of each fingerprint? I am gathering 100 fingerprints and seeing how many of each are there. Two, can a person have more than one type of fingerprint?
Well, that is all I know for now. Bye!!!!
There are three main types of fingerprints. The Loop, the Whorl, and the Arch. The Loop looks like a sideways loop. A Whorl looks like a bunch of bigger and bigger circles. And the Arch looks like a mountain. What type of fingerprint do you have?
I am trying to find out two things. One, what percentage is there of each fingerprint? I am gathering 100 fingerprints and seeing how many of each are there. Two, can a person have more than one type of fingerprint?
Well, that is all I know for now. Bye!!!!
Radio Waves
Air Pressure
Wind Power Generation
im going to build a wind power generator, it will generate energy by wind or by turning a crank. I am hoping to power a small lightbulb with my generator.When you turn the crank it will move a series of gears that will produce energy.
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