Get ready to WOW your kids with a super EASY science experiment for kids! This simple rising water experiment uses common household items to demonstrate a couple scientifc principles such as fire and oxygen as well as air pressure for kids. This burning candle in water experiment is fun for preschool, pre-k, kindergarten, first grade, 2nd grade, 3rd grade, 4th grade, 5th grade, and 6th graders. Olders students will benefit using the free printable burning Candle in Water Experiment Worksheets as they explore why does the water rise in the candle experiment.
Rising Water Experiment
Have you ever looked through experiment ideas for kids on google, Facebook, or Pinterst and thought it looked cool, but were convinced it was too difficult and wouldn’t work. I get it! I have been there too! This rising water experiment is NOT one of those science experiments. This the burning candle experiment is actually super simple and uses common things you have in your kitchen already! So gather a few supplies and start learning with this air pressure experiment for preschoolers, kindergartners, grade 1, grade 2, grade 3, grade 4, grade 5, and grade 6 students. Whether you are a parent, teacher, or homeschooler – you will want to try this super neat candle experiment that is quick and easy. Plus there is a free science worksheet to help teach the scientific method with older elementary age students too.
Burning Candle in Water Experiment
All you need to try this super cool science experiment are a few simple materials you probably already have on hand:
- plate with raised rim ro bowl
- ligther or matches
- mason jar or glass
- food coloring (we used blue to see it better)
- playdough (optional for holding the candle in place)
The Burning Candle Experiment
Start out by putting the candle on plate or bowl with a lip. I suggest using a chunky tall candle so the water won’t overwhelm the candle and it has some stability. If you use a tall tapered candle, you may want some playdough to hold it in place.
Mason Jar Experiments
The amount of water used will really depend on the height of your candle and the lip on your bowl. But I’d say 1/2 cupr or so was right for us. We mixed our water with food coloring first and then poured it on the bottom of the dish.
I suggest filling out the pdf science worksheets at this point to help students make educated guesses or hypothesis!
Burning Candle Rising Water Experiment
Please do a trial before you light it to make sure your candle will fit under the mason jar or glass. Light the candle and put a mason jar over the top of the candle.
WARNING: Fire is dangerous and this should only be done under the carefuly observation of a responsible adult. Please use common sense when completing this science activity.
Have students watch carefully. The candle will start lit, but won’t stay that way for long!
CAUTION: The glass will become hot to the touch. Please wait for it to cool down completely before touching; it should be handled by an adult with care.
Air Pressure for Kids
You will observe the candle going out, some bubbles forming around the bottom of the mason jar, and then the jar will begin filling up with water.
Why does the water rise in the candle experiment
The candle went out in the jar because it ran out of oxygen. Fire needs oxygen to live. When the oxygen ran out in the upside down mason jar the candle went out without us blowing on it. But something else happened when the candle was burning, the flame heated up the air inside the glass. The hot air expanded quickly and created higher air pressure inside the glass than outside the glass. To restore equilibrium, some of the high-pressure air inside escaped from under the glass. You may have seen tiny bubbles escaping from underneath the glass. When the flame extinguished, the air inside the glass began to cool down. Cooling air contracted, which in turn lowered the air pressure inside the glass.
The remainder of the blue water was sucked in to the mason jar.
Why does water rise in burning candle experiment
Burning Candle in Water Experiment Worksheets
Students filled out the remaineder of the burgning cande in water experiment printable showing the results. After you explain what happened, ahve children write their conclusion.
- Try using hot water or cold water instead of room temperature water; did it make a difference?
- Use more or less water? Does that make a difference?
- Use a larger candle or smaller candle; does the size of the candle matter?
- What if you use multiple candles? Multiple candles would make the jar hotter and use up the oxygen quicker; did that make a difference?
- Use milk or vinegar instead of water. Does the type of liquid change the outcome?
- Will using a bottle with a more narrow neck change the results?
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Looking for lots more fun, science experiments for kids? You’ve GOT to try some of these outrageously fun science experiments for kids! We have so many fun, creative and easy science experiments for elementary age children:
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Science Experiment for Kids
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