Definition of atom for Students. 1  1 : the smallest particle of an element that can exist alone or in combination carbon atoms. 2  2 : a tiny particle : bit âI don't believe there's an atom of meaning in it.â â Lewis Carroll, Alice's Adventures in Wonderland.
How Did Mount Everest Get Its Name? The highest mountain in the World, Mount Everest in Nepal was named after and in honour of Sir George Everest who was a British Surveyor General. In 1852 he found it to be the highest peak in the World during the Great Survey of India. It was originally called Mont Everest.
Mount Everest is called the world's highest mountain because it has the highest elevation above sea level . We could also say that it has the highest altitude. The peak of Mount Everest is 8,850 meters (29,035 feet) above sea level. No other mountain on Earth has a higher altitude.epending upon how you define highest mountain, Mount Everest has some rivals! Highest Altitude: An altitude of 8,850 meters (29,035 feet) above sea level makes Mount Everest the mountain on Earth with the highest altitude. Highest altitude means that it has the highest elevation above mean sea level.