The thermosphere layer is called the thermal layer as it is the hottest layer of the atmospheric envelope. It is the fourth layer of the atmospheric envelope, The temperature of the thermosphere layer increases...
The mesosphere layer is the third layer of the atmospheric envelope, It is the middle layer, It is the coldest one, The atmospheric pressure in the mesosphere layer decreases as we go up, until...
The stratosphere layer The stratosphere layer is the second layer of the atmospheric envelope, It is called the ozonic atmospheric envelope, The atmospheric pressure in the stratosphere layer decreases as we go up until...
The atmospheric envelope The atmospheric envelope consists of four layers above the sea level which are the troposphere layer, the stratosphere layer, the mesosphere layer and the thermosphere layer.
The elements The scientists classified the elements according to their properties to facilitate their study and to find a relationship between the elements, and their chemical and physical properties.
The sound waves The human ear differentiates between the sounds that reach it through the different factors which are the sound pitch, the sound intensity and the sound quality. The sound pitch The sound...
