PRESENTATION OUTLINE
Evaporation
The "first" step in the water cycle is when water in oceans, lakes, or
other bodies/collections of water is warmed up by the Sun. Heat adds
energy to matter. This causes the molecules in the water to move
faster and farther apart, until they move so far apart that they become a gas instead of liquid.
Condensation:
Condensation is the process by which water vapor in the air is changed into liquid water. Condensation is crucial to the water cycle because it is responsible for the formation of clouds.
Sublimation is when a solid turns directly into a gas, instead of first
becoming a liquid. In the water cycle, this is seen when ice or snow is
heated up enough to turn directly into water vapour. See the image
on the right for an example.
Precipitation
When enough water droplets form 'inside' clouds, they become heavy enough to
fall towards the Earth. This is usually observed as rain, but Precipitation
can also occur as snow, hail, sleet, etc., depending on temperatures
and humidity.
Transpiration is the process by which moisture is carried through plants from roots to small pores on the underside of leaves, where it changes to vapor and is released to the atmosphere. Transpiration is essentially evaporation of water from plant leaves.
Surface runoff is water, from rain, snowmelt, or other sources, that flows over the land surface, and is a major component of the water cycle. Runoff that occurs on surfaces before reaching a channel is also called overland flow.
Infiltration is the process by which water on the ground surface enters the soil.
Run off is a major pollution to water due to the fact that water washes waste and other pollutants into sewers or gutters which lead to more bodies of water and it damages water
