When do scientists believe the earth formed?
The earth was formed 4.6 billion years ago.
The highest elevation is Mount McKinley, Alaska, at 20,320 feet. The lowest is Death Valley, California, at 282 feet below sea level. The average elevation of the United States is 2,500 feet.
According to Albert Einstein’s law on the equivalence of mass and energy, the energy (E) of a quantity of matter is equal to the product of the quantity’s mass (m) and the square of the velocity of light (c).
Point Barrow, a city in Alaska with a 1980 population of 2,207, mostly Eskimo. It was the site of the 1935 air crash that killed Will Rogers.
At least two people have been hit by a meteorite. In September 1954, Mrs. Hewlett Hodges of Sylacauga, Alabama, was hit by a meteorite as she napped in her living room. The rock from space weighed about 10 pounds. In the late 1930s, a Japanese girl was also hit by a small meteorite.
According to the Report of the Postmaster General, 106,311,062,000 pieces of mail traveled through the system in 1980. On a given day, therefore, approximately 291,263,000 items passed through the country’s post offices. What’s more, this prodigious amount of mail traveled through many fewer post offices than at the turn of the century. In 1900, there…
Contrary to dormitory fears, it does not inhibit sexual desire. Instead, saltpeter, or potassium nitrate (KNO3), is a diuretic. Another form of saltpeter is Chile saltpeter, or impure sodium nitrate (NaNO3). Lime, or Norwegian saltpeter, is calcium nitrate. It is used to make explosives.