Science is so interesting!I'm sure you'll like this experiment!
What do you need?
·a candle
·a candle holder
·a big glass jar
·a shallow dish
·some water
·a lighter or matches
What do you do?
1.Put the candle in the candle holder.
2.Put the candle holder on the dish.
3.Fill the dish half full with water.
4.Light the candle.
5.Let the candle burn for two or three minutes.
6.Carefully put the jar over the candle until the top of the jar rests on the dish.
7.Examine the water in the jar.What can you see?
Can you see the candle holder in this picture? The candle is pink.The candle holder is grey.The candle holder is “holding” the candle!
What is happening?
As the candle burns, it uses the oxygen in the air.When the candle stops burning,it has used up all the oxygen in the air.The water inside the jar rises.How far does the water rise?Because about one fifth of the air is made up of oxygen,the water rises and fills about one fifth of the jar.
Can you do this experiment？