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Peter Baum asks

How can I measure how much liquid is in an apple, lettuce, a potato, and an orange?

kristi from hurricane w.v asks

If a person or infant is going to get freckles, at what point or age do they appear?

Sandra Diaz asks

What wind speed would be enough to blow somebody away?

Rick Morrison from Sudbury On asks

What makes certain surfaces such as highway lane markings, reflective strips on clothing and...

Shauna from the Internet asks

How long can a vehicle typically run without oil or antifreeze before the engine seizes?

Marty Ellis from Pittsburgh asks

Can a sintered ore magnet be re-magnetized in a different configuration of its poles? Does it need...

Karla asks

What causes the bends?

Ian Gordon from Exeter UK asks

Why are sounds so much louder downwind, even when the wind is light?

Alain Goulnik asks

Can nuclear tests produce earthquakes? India started nuclear testing, then Pakistan followed in...

Peter Schmuecking from Roetgen nr Aachen/Germany asks

My son, 13 y, has found a really good idea to prove the four colour map problem without computers,...

umit koseoglu from the Internet asks

how would i go about making some dry ice at home or in the school lab?

Mike Starry from Fresno, CA asks

How and when will hydrogen fuel cells be used to provide electricity for my home? What would it...

bree kissner from kingsville asks

why does soda pop fizz when it is poured over ice

Raymond J. Sucgang from Manila, Philippines asks

Hi, Could you please clarify: Does an increase in precision mean a decrease in accuracy? Does a...

Eduardo from Pembroke Pines asks

Is it true that gas particles at higher altitudes are farther away from each other than at lower...

Marcos Chimenti from Rio de Janeiro asks

Does air act as an insulator against lightning on flying airplanes? I know the aluminum case is...

Ken from Vancouver asks

If one could increase the flow of air into a jet engine,would this increase the efficiency of the...

DeeCee from Indianapolis asks

How does vacuum insulation work and can an R Value be assigned to it? Does the depth of the vacuum...

Laura from Earlton asks

How come on a warm clear day clouds form at night?

Linda O\'Neill from Dartmouth asks

How can you define the pressure of 5 g. on a person? This would be done with the fingers. I am...

Natasha Jackson from leaf river asks

How many skin cells would be in a square inch?

Dennis Nolivos asks

What is your opinion on the ethics of transplant farming and what is your opinion about genetic...

Saw Mui asks

Why does the Periodic Table of the Elements have two separate tables - one above and one below?

Kim Yonda from Winnipeg, Mb asks

I'm doing a project on mercury in water. I was wondering if and how you get mercury out of lakes. ...

Thalia Parcs from Toronto asks

I have noticed in Toronto for the past two years, that the weather has been abnormally cloudy in...

Kim from the Internet asks

When metal scrapes metal such as two spoons, it makes the edges of my teeth feel numb. Why is that?

Sara asks

Is invisiblilty possible? Is it possible to alter an object so it can't be seen? Could people's...

Tony Sousa asks

How do hot packs work? My wife purchased a reusable hot pack for keeping our baby warm when we go...

Hannah from North Bay, Ontario asks

My Dad told me about bioluminescence you know, the stuff that makes living organisms glow? Anyway,...

Phil from Ottawa asks

Are there some materials that shrink faster that other materials in cold? If yes, which ones?

D. Tolenaar asks

How does air conditioning work?

Ryan from Toronto asks

I am in grade 7 and attempting to do a Science Fair Project. I would like to know how I could test...

Helina from Shakespeare asks

What two liquids combine that gives you a solid instantly?

darioush asks

What is thought? Is it matter or energy? And how does the brain create a thought?

Nikki May from Erie asks

How does heated vinegar react with powdered milk to create the result of plastic like curds?

Yogesh Patil asks

Can you provide a detailed structure and working of the magnetron tube used in microwave ovens?

Amanda from Thunder Bay, Ontario asks

What is colour? How does the brain perceive colour?

Brian from Jersey City asks

How are mountains created?

Lia Cassanego asks

I am experimenting with microwave reboil caused when you microwave coffee or water and add sugar,...

prashanth kumar aitha from delhi asks

why is BERMUDA TRIANGLE'S MYSTERY unsolvable?