Brightest_Kidz: A Place 2 Learn

I am not a sun worshipper. I don't like to lay out in the sun or even spend much time doing anything under a hot burning sky. I like what we call "sweater weather" - early spring and late fall are typically my favorite seasons. I do not like "sweat-er" weather so any temperature over 70 degrees F does not sit well with me. I also like storms. Big thunder storms with brilliant flashes of lightning and pouring rain. Of course I enjoy these from the safety of my home. Here's a couple of neat activities that allow you to make your own weather.
 

What you need

Black paper  

Gallon jar

Colored warm water 

Matches 

Gallon size bag of ice

What you do 

1. Tape the black paper on the back of the jar, so you can't see through the jar.

2. Fill one third of the jar with colored warm water.

3. Light the match and hold it over the jar opening.

4. After a few seconds, drop the match into the jar and cover the top of the jar with the bag of ice.

5. Record your observations.

Can you see anything happening inside the jar?

You should see a little cloud form. Repeat the experiment until you do.

Why does the cloud form?

The warm water heats the layer of air that it touches. Some of the water evaporates into the air forming water vapor. The warm air containing water vapor rises, and then cools, as it comes in contact with the air cooled by the ice. When the water molecules cool, they slow down and stick together more readily. The particles of smoke act as nuclei for “bunches” of water molecules to collect on. This process is called condensation. As the atmosphere (air) cools, water vapor suspended in the atmosphere condenses into water droplets around condensation nuclei (tiny particles of dust, ash, pollutants, and even sea salt).

From: Web Weather for Kids