The Water Cycle

• What should you be able to describe by the end of the video?

  The stages of the water cycle
• In a previous video, what abiotic factor was discussed that affects communities?

  Water
• What does abiotic mean?

  Not living
• What are we looking at in this video regarding water?

  How water cycles around ecosystems
• Where is almost all of the water on Earth found?

  In the oceans
• What kind of water is found in the oceans?

  Salt water
• What causes water to evaporate from the surface of the sea?

  Energy from the Sun
• What happens to water vapor as it travels into the air?

  It cools down
• What does water vapor do when it cools down?

  It condenses to form clouds
• What is the water in clouds called when it falls to the ground?

  Precipitation
• What type of water is contained in all forms of precipitation?

  Fresh water
• What happens to some of the water when it hits the ground?

  It evaporates back into the atmosphere
• What does some of the water form when it passes through rocks?

  Aquifers
• What do a lot of the water form when it hits the ground?

  Rivers or streams
• Where do the water in rivers and streams eventually drain back into?

  The sea
• Besides the sun and general geography, what else plays a role in the water cycle?

  Living organisms
• How do plants take up water?

  Through their roots
• Where does the water that plants take up move up the plant?

  In the xylem
• Where does water pass out of the leaf as water vapor?

  Stomata
• What do scientists call the process of water passing out of the leaf as water vapor?

  Transpiration
• How do animals take in water?

  Through drinking and in their food
• How do animals release water?

  In their feces and when they exhale
• What are the stages of the water cycle?

  • Evaporation: Water turns into water vapor due to solar energy.
  • Condensation: Water vapor cools and forms clouds.
  • Precipitation: Water falls back to earth as rain, snow, hail or sleet.
  • Collection: Water gathers in rivers, streams, and aquifers, eventually draining back into the sea or evaporating.
  • Transpiration: Water is taken up by plant roots, moves up the plant in the xylem and passes out of the leaf stomata as water vapor.
  • Animals drink and eat, releasing water in their feces and when they exhale.
• After evaporating from the sea's surface, where does the water vapor travel?

  Into the air
• Where do the rivers and streams eventually drain?

  Back into the sea