Cool Science Experiments Headquarters

Make Memories One Cool Science Experiment at a Time!

  • Facebook
  • Instagram
  • YouTube
  • Pinterest
  • Email
  • Home
  • About
  • Experiments
  • Contact Us
  • FREE Newsletter

Science Experiments

Make a Cloud Form in a Jar Science Experiment

Ever wonder how clouds are made? This super fun and simple experiment will help teach your kids about the physical changes and reactions that happen as clouds form within the atmosphere. They will be amazed as they see their own cloud begin to take form while they learn new weather vocabulary.

In addition to creating your own cloud, you can use this chart to explore the different types of clouds and where they form in the sky.

Make a Cloud in a Jar Science Experiment

Below you’ll find our demonstration video, helpful tips to make your experiment successful, printable materials list and instructions, as well as easy to understand explanation of how the experiment works.

Note: Because this experiment requires boiling water, adult supervision is required.

JUMP TO SECTION: Instructions | Video Tutorial | How it Works

Supplies Needed

  • Glass Jar with a Lid (we used a pint mason jar)
  • 1 cup Hot Boiling Water
  • Blue Food Coloring (optional)
  • Aerosol Hairspray
  • 3-5 cubes of Ice

Make a Cloud in a Jar Science Experiment Instructions

Step 1 – Pour 1 cup of hot boiling water into a glass jar. Helpful Tip: Use food coloring to dye the water blue before pouring it into the jar. This is not required, but does help distinguish the cloud from the water. Plus, it makes the water look like the sky.

Step 2 – Quickly spray hairspray into the jar.

Step 3 – Immediately put the lid onto the jar. Helpful Tip: This step must be performed quickly, so have the lid handy. It also helps to have multiple people doing the experiment. One to spray the hairspray and one to put on the lid.

Step 4 – Place 3-5 pieces of ice on top of the lid of the jar.

Step 5 – Now it’s time to observe what happens. Watch the top portion of the jar carefully and write down what happens. As time passes, you will see a cloud begin to form.

Make a Cloud in a Jar Science Experiment

Step 6 – After observing the cloud form in the jar, remove the lid, and watch as it move out of the jar and into the air. Do you know the why the cloud formed? Find out the answer in the how does this experiment work section below.

Video Tutorial


How to Make a Cloud Science Experiment Step by Step Video

How Does the Science Experiment Work

Clouds form when water from Earth’s surface is heated and evaporates (physical change from liquid to gas), rises into the atmosphere, and then cools and condenses (physical change from gas to liquid) onto microscopic particles (ie. dust, dirt, ash) in the air.

In our experiment, the warm water in the jar caused the air inside the jar to heat up. When this happened some of the water evaporated into the air. This evaporation caused water vapor in the jar. Then the warm, moist air (water vapor) rose from the surface of the water to the top of the jar. Once it reached the top of the jar, the warm, moist air began to cool down. This is because of the ice that was on the lid of the jar. The water vapor in the cooling air then condensed onto the particles of hairspray, forming a cloud in the jar!

If you observe the cloud carefully, you’ll notice that it swirls around the jar. This swirling is caused by a convection current of warm air rising and cold air sinking. A convection current is a current caused the rising and sinking of a heated and cooled fluid.

I hope you enjoyed the experiment. Here are some printable instructions:

Make a Cloud - Step 6

Make a Cloud Science Experiment

Materials

  • Glass Jar with a Lid (we used a pint mason jar)
  • 1 cup Hot Boiling Water
  • Blue Food Coloring (optional)
  • Aerosol Hairspray
  • 3-5 cubes of Ice

Instructions

  1. Pour 1 cup of hot boiling water into a glass jar.Helpful Tip: Use food coloring to dye the water blue before pouring it into the jar. This is not required, but does help distinguish the cloud from the water. Plus, it makes the water look like the sky.
  2. Quickly spray hairspray into the jar.
  3. Immediately put the lid onto the jar. Helpful Tip: This step must be performed quickly, so have the lid handy. It also helps to have multiple people doing the experiment. One to spray the hairspray and one to put on the lid.
  4. Place a 3-5 pieces of ice on top of the lid of the jar.
  5. Watch the top of the jar carefully and you will see a cloud begin to form.
  6. After observing the cloud in the jar, remove the lid and watch the cloud escape out of the jar.
© Cool Science Experiments HQ
How to Make a Cloud Experiment Steps

 


3 Comments

Previous Post: « Use a Bottle to Blow-up a Balloon Science Experiment
Next Post: Underwater Volcano Science Experiment »

Reader Interactions

Comments

  1. autumn says

    January 24, 2019 at 3:54 pm

    love it

    Reply
  2. Anna Schmieding says

    January 26, 2020 at 6:43 pm

    Thank you! Love this.

    Reply
  3. Valentin Aguilar says

    September 18, 2020 at 4:17 pm

    I loved the experiment, I would have liked to do it but I did not have all the ingredients

    Reply

Leave a Reply Cancel reply

Your email address will not be published. Required fields are marked *

Primary Sidebar

Recent Experiments

Ruler Changes Size Science Experiment

Pouring Water Experiment - Step 7

Why Does the Water Pour Down the String Science Experiment

Water Doesn't Leak Science Experiment

Why Doesn’t the Water Leak?

Stay updated!

Get weekly science experiments delivered to your inbox!

Science experiments delivered to your inbox each week!

Safety is a priority with every science experiment. Before conducting any of the experiments found on CoolScienceExperimentsHQ.com you must get an adult's permission and help, follow the instructions provided as written and wear the appropriate safety gear (protective eyewear, clothing, etc). Have fun and stay safe!
  • Home
  • Contact
  • Privacy Policy
  • Disclosure Policy

Copyright © 2021 · Find Time for Fun LLC