Requirement 7 of 12

Water Cycle

Draw and label the water cycle and explain how water moves through evaporation, condensation, precipitation, and collection.

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Water cycle explanation

Prepare a labeled diagram of the water cycle and be ready to explain each major process.

Big picture

  • The water cycle is the continuous movement of water through Earth's surface, atmosphere, and living things.
  • Energy from the sun drives much of the cycle by warming water and causing it to evaporate.
  • Gravity helps pull water back to Earth as precipitation and moves it downhill as runoff toward streams, lakes, and oceans.

Major processes to label

  • Evaporation: liquid water changes into water vapor and rises into the air.
  • Condensation: water vapor cools and turns into tiny droplets that form clouds.
  • Precipitation: water falls back to Earth as rain, snow, sleet, or hail.
  • Collection: water gathers in oceans, lakes, ponds, rivers, soil, and glaciers.
  • Runoff: water flows across the ground into streams, rivers, and lakes.
  • Infiltration: some water soaks into the ground and becomes groundwater.
  • Transpiration: plants release water vapor from their leaves into the air.

How rain forms

  • The sun warms oceans, lakes, rivers, and wet ground, causing water to evaporate into the atmosphere.
  • As warm moist air rises, it cools. Cooler air cannot hold as much water vapor, so the vapor condenses onto tiny particles in the air.
  • These tiny droplets gather into clouds. When droplets or ice crystals grow large and heavy enough, they fall as precipitation.

What to include in your diagram

  • Draw a body of water such as an ocean or lake, land, clouds, and falling precipitation.
  • Use arrows to show evaporation rising, condensation forming clouds, precipitation falling, and runoff moving downhill.
  • If you want a more complete diagram, also label infiltration into the soil, groundwater, and transpiration from plants.

How to explain it to your counselor

  • Start with the sun as the main energy source for evaporation.
  • Then trace one drop of water through the cycle: it evaporates, condenses into a cloud, falls as precipitation, and returns to a body of water or the ground.
  • Explain that the water cycle never really stops. Water is always moving and changing form between liquid, vapor, and sometimes ice.

Why the water cycle matters

  • The water cycle helps create clouds, rain, snow, and much of the weather we experience.
  • It supplies fresh water for drinking, farming, ecosystems, and daily life.
  • Too much or too little water moving through the cycle can lead to floods, droughts, or changing water supplies.

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