Does light exert force?
from Morris Plains, NJ
Why is the helical content higher in gelatin with higher molecular weight. In other words, it seems...
I would like to know the chemical compostion of the venom in a yellow jacket wasp sting, the dosage...
Why are there no penguins in the Arctic, or anywhere in the Northern Hemisphere?
I heard there was a woman named Rosy involved in the discovery of the DNA double helix. Who was she...
How does sugar conserve food?
If a sound is played to a person over a period of time, is there a way to work out (or to estimate)...
I've been doing a science fair project testing the effectiveness of Lactaid(TM) lactase. From a...
If we are making a perfume and we pour alcohol on an orange peel; why would the smell increase the...
How does a lightstick work, and what are the chemicals involved?
Why do we yawn when we see someone else yawn? Why is it contagious?
Why do wet objects shine?
Loubelle I. Depita
from Koronadal City, South Cotabato, Philippines
Why are egg & milk used as antidotes for heavy metal poisoning and what other household remedies...
My grade 10 biology teacher tells us that blood comes in different shades of red (dimmer and...
Jerry E. Allen
Is it possible to freeze water in a vacuum? Is there a chart that shows water temperature vs....
At what speed does the world's slowest living thing travel? And what is the world's slowest living...
How much does a person's head or skull grow every year? If I'm 16, how much would it grow until it...
If neutrinos have mass, as now seems to be the case, they cannot travel at the speed of light …...
justine van der Werf
I have read that when oxygen is condensed to a liquid state, or indeed to a solid state it becomes...
In science fiction it is common to see P-P fusion, but my reading seems to indicate it is...
from Guwahati, Assam, India
Just like 1 mole of water contains Avogadros number of molecules and has the same mass as that of...
Can air in the pleural cavity cause the lungs to expand more fully than they normally would?
Can you tell me what the exact pH of the acid in our stomach?
from Andradas-MG- Brazil
When you squeeze out a piece of orange-peel on a flame, it catches fire violently. Why? What is...
What kind of weather is on Mercury and Saturn? Does it rain or snow on these planets?
Are light and matter the same thing? Can you get matter from light?
In Chemistry today, we learned that when HCl is ionized in water, the H2O becomes H3O+, because of...
Can absolute zero (0 degrees Kelvin or -273.16 degrees Celsius) be registered on a thermometer,...
Which would hit a baseball further - a wooden bat or a aluminum bat? Why??
When and how was the kaleidoscope made?
I have a physics paper here (don't worry i am not asking you for the answers!) that says each U-235...
When does each organ system of the human body reach full maturity?
Why do we have five fingers? My idea is that one of nature's themes is "having enough." It's like a...
How can I find out whether it takes more effort (work by pump) to increase the air pressure in a...
How would Giant Pandas being killed off affect my life?
I've a question about solublity, water, and cyclohexanone. Water has a certain solubility in...
How do scientists modify a virus so that it can be beneficial to a host cell? For example, during a...
from Los Angeles
Why do dry cell batteries (rechargeable) need to be fully drained before they can be recharged?
from lahore, pakistan
There is a controversy among my collegues that during agarose gel electrophoresis the band that...
Grade One, Chesterville Public School
from Chesterville, Ontario
What do you feed baby praying mantises? We found a mother praying mantis who laid an egg sack on a...
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