I'm doing a senior project on recycling, and I'm curious if it uses more energy to mine and convert...
from hurricane w.v
If a person or infant is going to get freckles, at what point or age do they appear?
Why does a saturated solution of calcium acetate gel when either ethanol or isopropanol is added to...
from the Internet
How long can a vehicle typically run without oil or antifreeze before the engine seizes?
Can a sintered ore magnet be re-magnetized in a different configuration of its poles? Does it need...
from Sudbury On
What makes certain surfaces such as highway lane markings, reflective strips on clothing and...
from Roetgen nr Aachen/Germany
My son, 13 y, has found a really good idea to prove the four colour map problem without computers,...
from the Internet
how would i go about making some dry ice at home or in the school lab?
What causes the bends?
from Fresno, CA
How and when will hydrogen fuel cells be used to provide electricity for my home? What would it...
from Exeter UK
Why are sounds so much louder downwind, even when the wind is light?
Can nuclear tests produce earthquakes? India started nuclear testing, then Pakistan followed in...
why does soda pop fizz when it is poured over ice
from Rio de Janeiro
Does air act as an insulator against lightning on flying airplanes? I know the aluminum case is...
Raymond J. Sucgang
from Manila, Philippines
Hi, Could you please clarify: Does an increase in precision mean a decrease in accuracy? Does a...
If one could increase the flow of air into a jet engine,would this increase the efficiency of the...
from Pembroke Pines
Is it true that gas particles at higher altitudes are farther away from each other than at lower...
How can you define the pressure of 5 g. on a person? This would be done with the fingers. I am...
How does vacuum insulation work and can an R Value be assigned to it? Does the depth of the vacuum...
from leaf river
How many skin cells would be in a square inch?
from Winnipeg, Mb
I'm doing a project on mercury in water. I was wondering if and how you get mercury out of lakes. ...
How come on a warm clear day clouds form at night?
What is your opinion on the ethics of transplant farming and what is your opinion about genetic...
Why does the Periodic Table of the Elements have two separate tables - one above and one below?
I have noticed in Toronto for the past two years, that the weather has been abnormally cloudy in...
I am in grade 7 and attempting to do a Science Fair Project. I would like to know how I could test...
Is invisiblilty possible? Is it possible to alter an object so it can't be seen? Could people's...
from the Internet
When metal scrapes metal such as two spoons, it makes the edges of my teeth feel numb. Why is that?
How do hot packs work? My wife purchased a reusable hot pack for keeping our baby warm when we go...
from North Bay, Ontario
My Dad told me about bioluminescence you know, the stuff that makes living organisms glow? Anyway,...
Are there some materials that shrink faster that other materials in cold? If yes, which ones?
What two liquids combine that gives you a solid instantly?
How does air conditioning work?
What is thought? Is it matter or energy? And how does the brain create a thought?
Can you provide a detailed structure and working of the magnetron tube used in microwave ovens?
How does heated vinegar react with powdered milk to create the result of plastic like curds?
from Thunder Bay, Ontario
What is colour? How does the brain perceive colour?
from Jersey City
How are mountains created?
I am experimenting with microwave reboil caused when you microwave coffee or water and add sugar,...
What is the highest and lowest canadian recorded air temperature?
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