EVERYDAY SCIENCE

Detailed explanation-1: -Exosphere . Located between about 700 and 10, 000 kilometers (440 and 6, 200 miles) above Earth’s surface, the exosphere is the highest layer of Earth’s atmosphere and, at its top, merges with the solar wind.

Detailed explanation-2: -Exosphere. This is the outermost layer of the atmosphere. It extends from about 375 miles (600 km) to 6, 200 miles (10, 000 km ) above the earth. In this layer, atoms and molecules escape into space and satellites orbit the earth.

Detailed explanation-3: -The stratosphere starts just above the troposphere and extends to 50 kilometers (31 miles) high. The ozone layer, which absorbs and scatters the solar ultraviolet radiation, is in this layer. The thermosphere starts just above the mesosphere and extends to 600 kilometers (372 miles) high.

Detailed explanation-4: -The thermosphere is often considered the “hot layer” because it contains the warmest temperatures in the atmosphere. Temperature increases with height until the estimated top of the thermosphere at 500 km. Temperatures can reach as high as 2000 K or 1727 ºC in this layer (Wallace and Hobbs 24).

Detailed explanation-5: -The thermosphere is above the mesosphere but is actually the hottest layer due to the absorption of intense x-rays and ultraviolet radiation. Thus, the mesosphere lacks radiation absorption from below and above, making it the coldest layer.