Why does the sky appear blue? plus 10 more videos..

Tyndall Effect - Why does the sky appear blue?
Density - Why does oil float on water?
Centrifugation - How is the principle of centrifugation helpful in blood banks?
Balanced and Unbalanced Forces - Why don't we fall into the center of the earth?
Solubility - Why does soda fizz when you shake it?
Thermal Expansion - Why are gaps left between railway tracks?
Mitosis - Why does a lizard's tail grow back?
Atmospheric Pressure - Why don't we get crushed by atmospheric pressure?
Newton's First Law of Motion - Why do you fall backwards when a bus starts suddenly?
pH Value - Why is soil pH important to farmers?
Sound - Why can't we hear sound in space?