This type of equilibrium describes a condition in a system where the distribution of mass and energy moves towards maximum entropy . Thermodynamic Laws Laws that describe the physical processes, relationships and phenomena associated with heat . Thermometer Device used to measure temperature . Thermosphere Atmospheric layer above the mesosphere where temperatures rise rapidly with height. The thermosphere is the hottest layer in the atmosphere.
Heat is generated from the absorption of solar radiation by oxygen molecules.
Temperatures in this layer can get as high as 1300-1800 degrees Celsius. Threatened Species Species that is still plentiful in its natural range but is likely to become endangered because of declining population numbers. The level of magnitude of a system process at which sudden or rapid change occurs. A small change in environmental conditions that exceeds limits of tolerance and causes harmful or fatal effects on an organism or population of a species. Threshold Velocity Velocity required to cause entrainment in the erosional agents of wind, water or ice.