sun
provides what almost everything on Earth needs to go---energy or heat
precipitation
rain, snow, hail
condensation
As warmer air floats up into the sky where it is cold, this happens and tiny liquid particles form...clouds.
groundwater
water that fills the cracks and pores in underground soil and rock layers
evaporation
changes liquid and frozen water into water-vapor gas, which then floats up into the skies to become clouds
runoff
water running off the land surface
transpiration
tiny holes in a plant's leaves that allow water to leave the leaf into the air
water vapor
the invisible, gaseous form of water
river
a natural stream of water of fairly large size flowing in a definite course or channel or series of diverging and converging channels
water cycle
the continuous process by which water moves through the living and nonliving parts of the environment
pond
a body of water smaller than a lake
clouds
a visible mass of condensed water vapor floating in the atmosphere, typically high above the ground
infiltration
water on the ground surface enters the soil
ocean
the vast body of salt water that covers almost three fourths of the earth's surface
lake
a body of fresh or salt water of considerable size, surrounded by land