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The Water Attracting Candle
Discrepant Events Research
LEGO Timeline
LEGO Story
A LEGO Lesson
Evaporation Activity
Condensation Activity
Raindrop Activity
Mass/Weight Misconception
Dissolving Misconception
Living Things Misconception
Air/Oxygen Misconception
Planetary Orbit Misconception
Surface Tension Demonstration
Air Pressure Paradox
Iodine/Starch Paradox
Air Pressure Paradox
Daytime Star Paradox
Mouse Simile
Rabbit Simile
Giraffe Simile
Bear Simile
Air Speed/Flight Demonstration
Cohesion Demonstration
Optical Illusion Demonstration
Lightning Demonstration
Twinkling Star Demonstration
Density Paradox

Science Area:  Earth Science
Concept:  Oxygen In The Air

How much Oxygen is in the air?



-A wide mouthed jar

-Baking pan



-Water to fill the dish halfway up

-Food coloring for the water (optional)


Safety Considerations:

- Be careful not to spill water on the floor.

- Be careful not to burn yourself or others with the matches and candle.




1.  Light candle, set candle on melted drippings in the center of the dish or pan.

2.  Fill pan half full of water.

3.  Turn jar over and place it over the candle.

4.  Observe results



1.  What are the components of air? 

2.  Why does the candle go out?

3.  Why does the water rise in the jar?




The candle needs oxygen to burn.  When the jar is placed over the candle the amount of oxygen available becomes limited and the candle consumes all of it. 


The candle flame has removed most of the oxygen from the air in the jar.  The pressure of the air left inside the jar has been reduced below that of the air outside.  The water rises in the jar approximately one fifth of the way up.  Therefore we assume that air is made of approximately 1/5 oxygen. 


Laurie Graba