from San Antonio, Texas
What is the volume of breathable air on the earth? Perhaps as one atmosphere?
I am in grade 7 and attempting to do a Science Fair Project. I would like to know how I could test...
Is there any evidence that the Green House Effect is not caused by industral gas emissions?
If air is a gas, and gas explodes when heated (in an eclosed space, the atmosphere), does that mean...
Why does lake water change temperature at a slower rate than the ground?
from Chesapeake, VA
I teach moon phases to my third graders. On posters, in textbooks, and online, I have seen...
from Glandorf, OH
Can you please tell me what the basic preservatives are in the following breads: white, wheat,...
from San Diego/California
Why does Aspartame taste so sweet? What is the chemistry involved in something that tastes sweet?
How did dinosaurs die? If they died due to a comet impact on the Earth there will be dust...
I would like to know how much oxygen is in our breathable air, and also if it has ever been 50%. If...
from Antigonish, Nova Scotia
How does the earth stay in the same place in space?
How does the sensory memory help us to hear, read and understand whole sentences? For example. when...
How does a atom split and how does it create such a big explosion? Also how can I split an atom at...
I heard that mountain chains (from continental collisions) could (thanks to their weight +...
from Bakersfield, CA
Do neutron stars evolve further? Charts of star evolution always show the neuton star as the last...
What are the globes which, when you puts your hand close to them, display electrical energy...
from Port Hardy, BC
Where did Albert Einstien live?
Last year a friend of mine widened and deepened an existing pond on his property. A considerable...
from the Internet
Many people add mustard to salad dressing (oil and vinegar) in order to render the two usually...
from Oakville, Ontario
I was watching a program about sleep-walking and they were saying something about how dreams were...
Do all antibacterial soaps kill bacteria? How do you test if they do?
How do split ends affect the way your hair grows? Why do people say that when you have split ends,...
from Withernsea, Yorkshire, England
Many people say there are 5 senses in the body but I am arguing with my mum here that there are...
from the Internet
Can any plants regenerate after they are totally dried - I don't mean somatic embryogenesis: can...
My son is doing a herptiles of ontario project and this a missing link question: Do you think...
What would be the appearance of the moon if it were in the western sky just after sunset? Why would...
from Melbourne (Australia)
Is blood more complex than just the four groups? How?
Also, what structures allow humans to have...
Why do some people use salt to kill weeds? What does salt do that makes the weeds die?
When a baby is formed it starts out as one cell then splits and reproduces and forms perhaps...
Is the air we exhale pure carbon dioxide? If not, then what is it?
from Staten Island
How much energy did the highest energy neutrino detected so far have?
Why do magnets erase magnetically recorded data? Are there some generally accepted guidelines for...
Why does uracil replace thymine in RNA?
from the Internet
Why doesn't pepsin break down gelatin on developed photographic film or does it just take a very...
Why do batteries behave differently when kept at different temperatures?
In my science project a...
from Mississauga, Ontario
I am really interested in chemistry and I was wondering where I would be able to purchase some of...
What is the difference between fats and cholestrol?
What's a gathering of frogs called? What's a gathering of toads called?
from Berkeley, CA
I understand why magnetism is a relativistic effect, "caused" by Lorenz contraction effectively...
from West Vancouver
(Re: E=Mc^2) Why does E/M=c^2 rather than simply c^1 (which is an altogether respectably large...
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