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kumar sah from Davis Ca. asks

I want to explain to my 6 year old daughter, why the rainbow appears bent/arched in a semicircle in...

Paul Hosking from Brisbane, Australia asks

We are having a debate at work that we hope you can settle. The father of one of my workmates has...

Gabby Stec from Harrisburg asks

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

Kiana Stewart from Blacksburg asks

If Virginia sees a full moon in the daytime then do places like Australia see no moon at night?

Jonathan Weiler asks

If atoms are so small, how can we split them?

RR from Toronto asks

How do electric kettles work?

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...

Linda VonCino from the Internet asks

Is there a "litmus paper" like test that can be used for testing for the amount of caffeine in a...

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...

julie from Soledad asks

What is the polar nature of water?

David from the Internet asks

During cellular respiration, why can't NADH pass its electrons to NAD+ across the inner membrane of...

Roman Tanisis from Coquitlam, BC asks

Hi was always wondering if it is ok to use a higher voltage power supply for a lower voltage...

Mauro Mavrinac from Ottawa asks

Given: a horizontal rigid tube with one end on an axis at a constant rotation. Insert a solid ball...

Ruben from Miami asks

I would like to know if there is any way to magnetize a 6x4x1/2 inch ceramic 8 non magnetized...

John Wood from Binmaley, Philippines asks

Why do (nearly) all birds move in a jerking motion as compared with other animals that move...

Dawn from Santa Clarita asks

Is a seed a living thing? If so, how do you prove it? Is it living before you add water?

Zulfikar Yassim asks

A black hole is created when a planet collapses and forms into a powerful vacuum sucking everything...

Kirandeep from Ludhiana asks

Why do proteins form lather on making their solutions?

Arnaldo from montreal asks

Is it possible make the aluminium transparent ?

Linda Sanders from Catonsville MD asks

Why does my coffee flow more freely from a to-go cup when there are two holes in the lid instead of...

James from Hamilton asks

If 'O' (oxygen) is an element and CO2 is a compund...what is O2, or Cl2?

Ava Gabourel from New York asks

Who discovered High Blood Pressure and what year?

deepak singhal from Bangalore (India) asks

Before getting married should we consider blood groups of both individuals? Is there any...

Betsy Kirk asks

What is happening when someone plays a song on wine glasses? They are filled with different...

Ali from Pakistan asks

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

Sarah Bosquet from Issoudun asks

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

Edward from Mississauga, ON asks

I have a wierd thinking question regarding electricity. When we have a positive charge or a...

D Selman asks

Why do I see green and orange lines in a sodium ion when my flame is the color of yellow?

Olivia from Sydney asks

I was wondering about planet orbit paths and if they change. I read that a change in the Earth's...

Cynthia Everhart from Leesburg asks

My neice is being tested for an unknown cause to her developemental delay. She has recently been...

Anton St-Jacques from Kingston asks

I heard that all cells only come from existing cells. If this is true, how did the first cells...

Al Ullman asks

What is "route dependent toxicity"?

Donna Creighton from Havre de Grace MD asks

Do noses and ears continue to grow throughout the lifetime?

Aime Roger from Halifax asks

I am quite confused with temperature scales! i would like to know the link between the degree...

Dave from the Internet asks

Hi, I am looking for a procedure that I can use for a science investigation. We are testing water...

Justin Murphy from Coquitlam asks

How does what we smell affect what we taste?

Nijin from KHD asks

Is there any living thing that doesn't need water to survive in the whole life? If there is...

Becca Thompson asks

What are the names and locations in the universe of known black holes?

Andrea from London asks

In chemistry, how do you know what the formula of a compound is? For example, how do you know if it...