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Home » Early Years Science » Preschool Science » Evaporation and the Water Cycle

Evaporation and the Water Cycle

Modified: Jan 27, 2023 · Published: Jul 13, 2012 by Emma Vanstone · This post may contain affiliate links · 5 Comments

A few weeks ago, when we had a brief hot spell, we added water to some sand and left it outside to see what would happen. This activity is a great, easy way to learn about evaporation, the water cycle and changes of state too!

Evaporation and the Water Cycle

Separating sand and water - science for kids  - evaporation and the water cycle

Within 36 hours, the water had disappeared!

sand with evaporated water - science experiments for kids

How can you separate sand and water?

The water evaporated because of the heat from the sun. Evaporation is when a liquid vaporises.

Many factors affect evaporation, but the main driving force is solar energy from the sun.

Make it an experiment!

If you wanted to set this up as an experiment or investigation, one way to set it up is to leave the wet sand in different places ( sun, shade, indoors etc.) and observe how the sand in each area changes over a period of time.

Evaporation is an important part of the water cycle

Water Cycle Diagram - evaporation and the water cycle #watercycle

Condensation – this is when a gas turns back into a liquid. The water vapour in the air gets cold and turns back into a liquid to form clouds.

Precipitation is when so much water condenses that the clouds get heavy, and water falls back to earth as rain ( or snow ).

Collection – this is when rain collects in rivers and oceans, and the cycle starts again.

Try pouring a cold drink into a glass on a hot day, and watch what happens on the side of the glass. What do you think this is an example of?

More water cycle experiments for kids

Make a Mini Water Cycle with a bowl, cup, water and clingfilm.

Learn about The Water Cycle and Flooding.

We’ve also got a fun collection of weather science experiments for kids, including a rain gauge, barometer and storm in a jar!

Evaporation and the water cycle - easy science for kids  #watercycle #evaporation

Last Updated on January 27, 2023 by Emma Vanstone

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Safety Notice

Science Sparks ( Wild Sparks Enterprises Ltd ) are not liable for the actions of activity of any person who uses the information in this resource or in any of the suggested further resources. Science Sparks assume no liability with regard to injuries or damage to property that may occur as a result of using the information and carrying out the practical activities contained in this resource or in any of the suggested further resources.

These activities are designed to be carried out by children working with a parent, guardian or other appropriate adult. The adult involved is fully responsible for ensuring that the activities are carried out safely.

Reader Interactions

Comments

  1. Ann

    July 13, 2012 at 2:23 pm

    Oh! That was going to be my second guess! Great simple experiment to try with kids!

    Reply
    • ScienceSparks

      July 13, 2012 at 7:04 pm

      Thank you, glad you liked it!

      Reply
  2. Carrie

    July 19, 2012 at 3:16 pm

    What a great idea!! Thank you for sharing at Sharing Saturday!!

    Reply
  3. Ticia

    July 20, 2012 at 10:05 pm

    Back when I was teaching we had a whole song about the water cycle. I’m thinking your idea of a hot spell is not quite the same as ours here though……

    Thanks for linking up to Science Sunday!

    Reply
    • ScienceSparks

      July 23, 2012 at 6:49 am

      Ha ha, i’m sure its not! 🙂 I’d love to know the song. xx

      Reply

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