Why did the Tunguska event change atmospheric pressure? What does air pressure affect? Why does pressure decrease down the arterial tree? Why does air resistance increase with speed? Why do airplanes fly in a certain area of the atmosphere?
Why does a piece of white paper appear white in white light, red in red light, blue in blue light and so on for every color? Why do objects illuminated by moonlight lack color? Is White a colour? Explain How are the colors in a spectrum from an atom different from those in a rainbow?