The oldest rocks in the earth's crust were once molten, and came from deep inside the earth. The molten rock, called magma, spewed out in volcanic eruptions during the earth;s early life and solidified into hard rock's called
Options: whenever the normal decrease of atmospheric temperature, when the decrease in temperature or moisture or both takes place, whenever the normal decrease of atmospheric temperature or moisture or both change with height over a short vertical interval, All of the above
William Frederick is credited with the invention of the modern frisbee in the mid 1950's. In 1957 the Wham-O Company bought his idea and the rest is history. They named the toy after William Frisbie who was a ________?
Options: Pie maker, Owner of a pizza parlor, Student at Yale, Ceramic plate designer
Options: a club or a local sport association for remarkable achievements, amateur athlete, not necessarily an Olympian, National Olympic Committee for outstanding work, None of the above
Planets do not twinkle because
Options: they emit light of a constant intensity, their distance from the earth does not change with time, they are very far away from the earth resulting in decrease in intensity of light, they are nearer to earth and hence we receive a greater amount of light and, therefore minor variations in the intensity are not noticeable