Science experiments for children – Lava lamp- an experiment on the density and specific gravity of great effect, for children of kindergarten and primary school.
Science experiments for children – Lava lamp
What do you need?
A bottle of glass or transparent plastic one-liter,
a cup of water,
seed oil,
food coloring,
an effervescent tablet (like Alka Seltzer).
Science experiments for children – Lava lamp
What to do?
Pour the water in the bottle.
Use a measuring cup or a funnel to slowly pour the vegetable oil in the bottle up to fill it almost completely.
Let stand until water and oil do not remain clearly separated.
Add about ten drops of colorant, and finally enter into the bottle half effervescent tablet.
photo credit: Sciencebob
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Science experiments for children – Lava lamp
Video
Science experiments for children – Lava lamp
Other links:
http://www.sciencekids.co.nz/experiments/easylavalamp.html
http://www.physicscentral.com/experiment/physicsathome/makeshift-lava-lamp.cfm
