Water Cycle

• All living things require water to survive.
• Water moves between the ocean, atmosphere, and land.
• Sun powers this cycle, 84% of vapor comes from the ocean.
• Warmer air holds more water.
• Wind and air masses transport water around the Earth.
• Precipitation: rain water falls to the ground.
• Evaporation: the process of turning from liquid into vapour.
• Condensation: The process of water vapor condensing to form liquid water.
• Percolation: water goes through soil until it reaches ground water.
• Transpiration: when water leaves the leaves of plants via the stomata.
• Humans can influence the water cycle by withdrawing large quantities of fresh water from the surface and ground water, like aquifer depletion and saltwater intrusion.
• Humans can influence the water cycle by clearing vegetation for agriculture, mining, & construction, which increases runoff, flooding, erosion and decreases infiltration.
• Humans can influence the water cycle by modifying water quality, like adding nutrients, and changing natural processes.