from Davis Ca.
I want to explain to my 6 year old daughter, why the rainbow appears bent/arched in a semicircle in...
from Brisbane, Australia
We are having a debate at work that we hope you can settle. The father of one of my workmates has...
Why, specifically, do ferrite magnets gain strength in low temperatures?
If Virginia sees a full moon in the daytime then do places like Australia see no moon at night?
If atoms are so small, how can we split them?
How do electric kettles work?
A F Jenks
from Nelson, NZ
When a laser is bounced off the reflector Apollo crew placed on the moon, or any light is reflected...
from the Internet
Is there a "litmus paper" like test that can be used for testing for the amount of caffeine in a...
Why do all planets revolve in elliptical orbits around the sun? I mean in nature there existis...
I was watching a short documentary on how the Earth first came about. The part that was puzzling me...
What is the polar nature of water?
from the Internet
During cellular respiration, why can't NADH pass its electrons to NAD+ across the inner membrane of...
from Coquitlam, BC
Hi was always wondering if it is ok to use a higher voltage power supply for a lower voltage...
Given: a horizontal rigid tube with one end on an axis at a constant rotation. Insert a solid ball...
I would like to know if there is any way to magnetize a 6x4x1/2 inch ceramic 8 non magnetized...
from Binmaley, Philippines
Why do (nearly) all birds move in a jerking motion as compared with other animals that move...
from Santa Clarita
Is a seed a living thing? If so, how do you prove it? Is it living before you add water?
A black hole is created when a planet collapses and forms into a powerful vacuum sucking everything...
Why do proteins form lather on making their solutions?
Is it possible make the aluminium transparent ?
from Catonsville MD
Why does my coffee flow more freely from a to-go cup when there are two holes in the lid instead of...
If 'O' (oxygen) is an element and CO2 is a compund...what is O2, or Cl2?
from New York
Who discovered High Blood Pressure and what year?
from Bangalore (India)
Before getting married should we consider blood groups of both individuals? Is there any...
What is happening when someone plays a song on wine glasses? They are filled with different...
In microwave transmission sometimes we use power in positive e.g +13db and sometimes in negative...
I'm writing a science-fiction novel and need information about black holes, gravitation and...
from Mississauga, ON
I have a wierd thinking question regarding electricity. When we have a positive charge or a...
Why do I see green and orange lines in a sodium ion when my flame is the color of yellow?
I was wondering about planet orbit paths and if they change. I read that a change in the Earth's...
My neice is being tested for an unknown cause to her developemental delay. She has recently been...
I heard that all cells only come from existing cells. If this is true, how did the first cells...
What is "route dependent toxicity"?
from Havre de Grace MD
Do noses and ears continue to grow throughout the lifetime?
I am quite confused with temperature scales! i would like to know the link between the degree...
from the Internet
Hi, I am looking for a procedure that I can use for a science investigation. We are testing water...
How does what we smell affect what we taste?
Is there any living thing that doesn't need water to survive in the whole life? If there is...
What are the names and locations in the universe of known black holes?
In chemistry, how do you know what the formula of a compound is? For example, how do you know if it...
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