Essay on e ava
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Evaporation is the process in which a liquid turns to a vapor without its temperature reaching boiling point. The rate of evaporation rises if the liquid is warmed up. The temperature of a liquid decreases as it evaporates because the evaporating molecules remove energy from the liquid. ¨Water is the most ordinary substance on Earth. It covers 70 percent of the world’s surface. Each water molecule is made up of two atoms of hydrogen and one of oxygen. Water freezes at 32°F (0°) and boils at 212°F (100°). Ninety-seven percent of Earth’s water is in the oceans and two percent is in the form of ice or snow. The movement of water around the Earth is called the water cycle. Water vapor in the atmosphere condenses to fall as rain, flows through rivers…show more content…

¨Evaporation is the primary pathway that water moves from the liquid state back into the water cycle as atmospheric water vapor. A very small amount of water vapor enters the atmosphere through sublimation. Sublimation is the process by which water changes from a solid to a gas, bypassing the liquid phase. The process of evaporation removes heat from the environment, which is why water evaporating from your skin cools you¨. Evaporation is all about the energy in single molecules, not about the average energy of a system. The average energy can be low and the evaporation still continues. All liquids can evaporate at room temperature and normal air pressure. Evaporation is one of the two forms of vaporization. It is the process whereby atoms or molecules in a liquid state (or if the substance sublimes) gain sufficient energy to enter the gaseous state. It is the opposite process of condensation. Therefore evaporation proceeds more quickly at elevated temperature, at higher flow rates between the gaseous and liquid phase, and in liquids with lower surface tension. All liquids evaporate when some of their molecules/atoms fly off the surface into the nearby

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~courtney

every of the four river valley civilizations, religion played an enormous role in shaping and cultivating each civilization. this essay will briefly discuss how religion formed the river valley people’s government and view on geography. religion dictated how the peoples of the river valley civilizations managed government and geography.

            religious leaders played prominent roles in every river valley civilizations form of government. from ancient egypt and mesopotamia to china’s historic empire and the indus river valley, all the river valley civilizations had significant religious figures. in ancient egypt, the pharaoh was revered as a god and therefore was given his right as supreme governing authority in the eyes of the people. the elusive emperors of china gained there governing rights by a mandate of heaven creating long lines of dynasties until the common people of china felt the dynasty had lost the favor of the gods. chinese emperors were not only governing leaders but also the spiritual leaders of ancient china. mesopotamian and indus river valley priests were referred as has head officials who had vast amounts of authority in these two civilizations primitive forms of democracy. religion shaped the structure and social caste of the four river valley civilizations.

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