Why does oil stay above the water?
Oil is lighter than water.
The World's Easiest
Lava Lamp
What I Need
A clean 1 litre clear soda bottle
3/4 cup of water
Vegetable Oil
Fizzing tablets (such as Alka Seltzer)
I Pour water into the soda bottle.
Then I pour vegetable oil into the bottle. I notice the oil stays above the water because oil is lighter than water.
Then I pour vegetable oil into the bottle. I notice the oil stays above the water because oil is lighter than water.
Next, I add a few drops of colouring.
It passes through the oil and then mix with the water below.
It passes through the oil and then mix with the water below.
I then break a sizzling table. The bubbling lava lamp begins.
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