Water Cycle
It rains. Some water is immediately evaporated from ground surface.
It rains. Water is taken in by plants and then transpired back to the atmosphere.
It rains. Some water infiltrates the soil, is sent through the groundwater, reaches the oceans and is then evaporated back to the atmosphere.
It rains. Some water runs off, on the surface of the ground, reaching streams and rivers. These link to the ocean, and this water is evaporated back to the atmosphere.
Water Cycle Transfers
•Water moves unchanged as H₂O through different parts of the environment.
•Evaporation transfers liquid water from oceans, lakes and soil to the atmosphere as water vapour without altering its molecular structure.
•Transpiration transfers water vapour from plant leaves into the air.
•Precipitation transfers atmospheric water back to land and oceans.
•Runoff transfers water across the surface into streams and seas, while infiltration transfers it into soil and groundwater.
•Organisms transfer unchanged water through drinking, circulating it within tissues, and releasing it again through excretion and respiration.
Water Cycle Transformations
•Water transforms only by changing physical state while remaining H₂O.
•Evaporation transforms liquid water into vapour.
•Condensation transforms water vapour into liquid droplets in clouds.
•Freezing transforms liquid water into ice, and melting transforms ice back into liquid water.
•Sublimation may also occur when ice transforms directly into vapour.