Deserts form in general from the high atmospheric pressure and cold air that comes from the upper altitudes nearby. The heat from the sun causes high ground temperatures with low humidity.
The fact that glaciers have been retreating during the past 8,000 to 10,000 years is a major contributing factor to the formation of deserts. The land that previously had been covered with a great deal of water for thousands of years has since dried out. Leaving the area arid and dry. Deserts are formed in several ways. One type is formed by a "rain shadow," which occurs to land is between two mountain ranges. The precipitation falls on the other side of the mountains, leaving the land in-between dry. Deserts have been around for approximately 125 million years, according to evidence that has been found.Learn More
Rainbows form when water in the air reflects and refracts sunlight and disperses the normally white sunlight into colored light. White light is composed of colored light that bends at different angles when reflected and refracted, separating the white light into the distinct colors of a rainbow.Full Answer >
Thunderstorms form when rapidly rising warm air brings moisture to higher parts of the atmosphere, then water vapor cools and condenses into droplets that fall to the Earth as rain. The process of rising warm air is called convection, which occurs when the atmosphere above the surface of the planet is unstable due to sudden changes in air pressure and temperature.Full Answer >
A glacier forms when a specific environment gets consistent snowfall throughout the year, causing the snow to accumulate rather than melt. The accumulation and compacting of snow by pressure eventually becomes glacial ice. Thus, sufficient moisture in the air and cold air are instrumental in the formation of glacier.Full Answer >
Fossils form when a dead animal or plant is covered by sediment. Eventually, the organic matter in the bone or plant, such as the blood vessels and tissue, slowly turns into rock, which becomes known as a fossil.Full Answer >