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How to Make a Solar Still — Simple Summer STEM Activity

May 30, 2020 by OneMommy

Summer is the perfect time for some simple science experiments using the sun.  After all, there are plenty of warm, sunny days ahead!

There are so many fun solar science activities you can do with the kids.

This solar still experiment is one of our favorite STEM activities for summer.

solar still for kids

 

Learning how to make a solar still isn’t just a fun summer science experiment.

Solar stills are also a simple way to purify water for drinking, making it a great survival skill to learn.  You could use it as part of a survival themed camp, along with our buddy burner tin can stove.  

Or, try it along with some of our other fun summer backyard camp activities for kids.

 

How to Make a Solar Still

Affiliate links have been provided below.  See my full disclosure for more details. 

Materials Needed:

  • Clean Glass Jar
  • Wide Plastic Bucket or Bowl 
  • Plastic Wrap
  • Small Rock
  • Rubberband or Tape
  • Water

Find a sunny spot to place your solar still.  It should be a spot that gets sun almost all day.

Start by pouring an inch or two of water into your large plastic bucket.

To really demonstrate how a solar still can be used to clean and purify drinking water, we decided to use water from our pond.  You could also add a bit of dirt to tap water or just use clean water to begin with. The choice is yours.

Place your clean glass jar in the center of your bucket.  Be careful not to get any of the dirty water inside the jar.

Cover the bucket with plastic wrap.  

Your plastic wrap needs to form a good seal around the bucket.  Some brands of plastic wrap will cling tight, but if yours doesn’t want to stay put try using a large rubberband or a bit of tape.

Finally, place a small rock on top of the plastic wrap, right over the jar.

Then let your solar still sit undisturbed for several hours.

Use the time to learn trail marking in a no-prep scavenger hunt with the kids.  Or, try to make s’mores with a solar oven!

how to make a solar still; simple summer science experiment for kids -- how to purify water

With the help of the sun, the water will evaporate and then collect on the plastic wrap.

The water droplets will then run towards the center because of the rock and fall into the jar, producing clean water that is safe to drink.

survival skills for kids -- how to purify water with a DIY solar still

Another fun twist to this experiment is to try it using salty water.  The water that collects in the jar won’t taste salty and will be perfect for drinking.

While this isn’t the fastest way to purify water, this DIY solar still is effective.

We let our solar still experiment sit in the sun all day and wound up with about an inch of drinkable water.

solar still science experiment

 

If you enjoyed this post, you’ll also like:

  • How to Build a Shelter
  • Make Solar Oven S’mores
  • Summer Science: Make a Soda Pop Geyser
  • Fun and Foamy Elephant Toothpaste Experiment 
 

First published on July 17, 2017.

Filed Under: STEM Activities Tagged With: hands on learning, science experiment, STEM activity, summer

Comments

  1. Lydia F says

    July 20, 2017 at 9:48 am

    Great project for demonstrating essential survival skills. Thanks for sharing with us at Creatively Crafty #ccbg 🙂

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