Answer to Question 1
The latent heat of vaporization is the energy needed to convert liquid water to water vapor. Quantitatively, the latent heat of vaporization is 2260 kJ/kg at 100C. Thus, it takes 2260 kJ of energy to convert 1 kilogram of water at 100C to water vapor. When the process is reversed and the water changes from a gas back to a liquid, this same amount of energy is released to the environment.
Answer to Question 2
The monsoon flow over Southeast Asia. (a) Summer heating of the Tibetan Plateau produces intense convection and low surface pressures, drawing in moist air from the Indian Ocean to the south. (b) The reverse occurs in winter, when low temperatures and extensive snow cover on the plateau produce high surface pressures, subsidence, and outflowing air.
In most ecosystems, sunlight provides the ultimate source of energy to power all biological activity
Energy budget for a temperate deciduous forest (data from Gosz et al. 1978).
Figure 7.1 shows the rapid decline in the trust of Americans in government since the 1960s. This de
Remote sensing and GIS are important tools
The growth in demand for energy use is met by burning fossil fuels
An athlete stretches a spring an extra 40.0 cm beyond its initial length. How much energy has ...