Can you do real air science at your kitchen table?
Yes! With cups, ice, water and a grown-up helper, you can see the same science that keeps your house cool in summer and warm in winter.

Scientists ask a question, try something, and watch closely. You can do that too. Every lab on this page uses things from your kitchen. Pick one, find a grown-up, and start.
The lab rule
Pick a lab
Each card tells you about how long it takes, how messy it is, and what the grown-up helps with.
Cloud in a Glass
Why does a cold cup get wet on the outside? Your AC does the same trick.
⏱ 10-15 minutes. 💧 A little wet. Grown-up helps: getting ice.
Cool by Evaporation
A wet cloth and a breeze. Find out why drying water makes things cooler.
⏱ 15 minutes. 💧 A little wet. Grown-up helps: a room fan, if you use one.
Warm Goes Up
Watch warm water and cold water with food coloring. Which way does warm go?
⏱ 15 minutes. 💧 Can drip. Grown-up helps: warm tap water.
Static Balloon
Rub a balloon and make paper bits jump. It is the same pull that helps some filters grab dust.
⏱ 10 minutes. 💧 No mess. Grown-up helps: blowing up the balloon.
Dust Detective
Shine a flashlight in a dark room and see what floats in the air. Then build a tiny filter.
⏱ 15 minutes. 💧 A little wet. Grown-up helps: the dark room.
Keep It Cold Race
Wrap ice cubes in different coats. Which one melts last? Your attic has a coat too.
⏱ 30-60 minutes. 💧 Melty. Grown-up helps: timing.
Science Fair Ideas
Need a project for your school science fair? Here are home air questions you can test.
⏱ A few days. 💧 Depends. Grown-up helps: planning.
How to be a great scientist
- Guess first. Before you start, say what you think will happen. A guess like this is called a hypothesis (hi-POTH-uh-sis).
- Change one thing at a time. If you change two things, you will not know which one made the difference.
- Watch closely. Look, listen and feel. Write down or draw what you notice.
- Do it again. Real scientists try more than once to be sure.
- Surprises count. If something does not happen, that is a result too. Write it down.
- Share it. Tell someone what you found and what you think it means.
Fun fact: Your refrigerator and your air conditioner work in a very similar way. Both move heat from inside to outside. That is why the back or bottom of a fridge feels a little warm.
My lab notes
Two pages: your lab plan, then a page to write what you measured.
Two pages: your lab plan, then a page to write what you measured.
Want to learn more first?
These pages help explain what you see in the labs.

