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Francis from Ottawa asks

When a ball is rotated at the end of a string in a horizontal circle (parallel to the ground) what...

Matt from Mississauga asks

I have been reading and learned that electrons flow from negative to positive in the external...

Willam Lockie asks

What is the protocol used to determine where each country is allowed to put its satellites to avoid...

John Douglass asks

Hexane seeps out of the ground at old sites of underground gasoline storage tanks. Can I smell...

Matt from Ottawa asks

Knowing the basic functions of magnets (dipoles, domaines...) I still don't understand WHY two...

Sherri from Baltimore asks

Does Henna (a plant based hair dye) contain any aluminum in its substances?

M Harish from Mumbai asks

Why does a bar magnet repel when it breaks?    n====|====s

missy cunningham from portsmouth asks

Every time we go to our local grocery store and get a buggy that does not have a chain hanging from...

tina from the Internet asks

Will pea seeds germinate slower in a liquid substace other than water? why? I am conducting an...

Michelle from San Jose asks

What are vinyl erasers made of?

Jessica Muller from Hamilton, Canada asks

I have heard that some one discovered that the atom is actually made up of sound waves. Is there...

Josh from New York asks

If hydrogen peroxide is bad for cells, why is it good for cuts? Also, how is it a good treatment...

Ali from Pakistan asks

In microwave transmission sometimes we use power in positive e.g +13db and sometimes in negative...

Steve from Honolulu, HI asks

I'm interested in commerical lightsticks... I understand it is hydrogen peroxide and oxalate ester...

C.L.Bridger asks

What chemical additives can be used to increase the octane rating of unleaded gasoline?

Dallin Shaner from the Internet asks

What is the scientific explanation of why a magnet's magnetism would decrease or increase when its...

Gabby Stec from Harrisburg asks

Why, specifically, do ferrite magnets gain strength in low temperatures?

Anonymous from Queens, NY asks

I would like to know why the bananas has that semi circular shape. I wonder if it is because the...

Cristina asks

How far is the Sun from Pluto? How long does it take for sunlight to travel to Pluto?

Kim Monin from Nepean, Ontario asks

I am trying to make natural beeswax into an ivory colour. Some people say they use natural dyes. ...

Alexis Rolling from Nampa, Alberta,Canada asks

Why was Mars formed?

A F Jenks from Nelson, NZ asks

When a laser is bounced off the reflector Apollo crew placed on the moon, or any light is reflected...

Tom Henson from Bettendorf, Iowa asks

I am doing a science project on how light affects plant growth. If you could answer my 10...

Base from Ontario asks

Why is vegetable oil viscous?

erin asks

Can you explain how those bright sticks work, the ones that glow for hours with a snap and a shake?

Fern Marques from North Bay, Ontario asks

How can planetary angular momentum be tranferred from one body (Earth's rotation) to another...

Teresa Golebiewski asks

Why doesn't oil freeze? Would it freeze at -270 degrees?

Josh from niagara falls asks

What is the ingredient used to make "hair gel" stiff and hold?

Sarah Bosquet from Issoudun asks

I'm writing a science-fiction novel and need information about black holes, gravitation and...

Daniel from Singapore asks

Is there such thing as an Ice Bullet? A bullet that melts into the target so that there will be...

John Crowe from Dublin asks

If I knew the centre of the universe and began to travel toward it, would I begin to decrease in...

Thomas Seltsam from Austria asks

Is glass an amorphous mass? Old glass, for example the glass found in old churches, is much thicker...

Ava Gabourel from New York asks

Who discovered High Blood Pressure and what year?

Holly asks

What is the difference between a dolphin and a porpoise?

Richard Hart from Victoria, BC, Canada asks

My wife asked me, "What does the sun burn and why doesn't it burn out?" I told her about helium...

Shaun Carney from the Internet asks

What keeps electrons from eventually falling into the nucleus of an atom if they are attracted by...

samantha from Sarnia asks

Is it true that only female bees can sting you? And if it is, why is that?

Ahmad asks

What are neutrinos and positrons?

Abhinav from Delhi asks

Why do all planets revolve in elliptical orbits around the sun? I mean in nature there existis...

Shane Harrison from England asks

I was watching a short documentary on how the Earth first came about. The part that was puzzling me...