EVERYDAY SCIENCE

Detailed explanation-1: -The lowest portion of the atmosphere is the troposphere, a layer where temperature generally decreases with height. This layer contains most of Earth’s clouds and is the location where weather primarily occurs.

Detailed explanation-2: -The troposphere is the lowest layer of Earth’s atmosphere. Most of the mass (about 75-80%) of the atmosphere is in the troposphere. Most types of clouds are found in the troposphere, and almost all weather occurs within this layer.

Detailed explanation-3: -Troposphere hosts the water cycle. Friction between air and the Earth’s surface propels dust particles in the air. Their coming in contact with moisture leads to cloud formation, further leading to precipitation in the form of rains or snow.

Detailed explanation-4: -Gravity, combined with the compressibility of air, causes the density of an atmosphere to fall off exponentially with height, such that Earth’s troposphere contains 80% of the mass and most of the water vapor in the atmosphere, and consequently most of the clouds and stormy weather.

Detailed explanation-5: -The stratosphere is very dry air and contains little water vapor. Because of this, few clouds are found in this layer and almost all clouds occur in the lower, more humid troposphere. Polar stratospheric clouds (PSCs) are the exception. PSCs appear in the lower stratosphere near the poles in winter.