Simple Science Experiments
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HOMEMADE LAVA-SPEWING VOLCANO
MATERIALS
•\tEmpty 2-liter bottle /jar
•\tSalt dough or soil
•\tTray
•\tBaking soda
•\tLiquid dish soap
•\tWhite vinegar
•\tRed food coloring
METHOD
1.\tUse a large tray to make the base, to prevent the lava from staining surfaces during eruptions.
2.\tUse salt dough or soil to form a mountain around an empty 2-liter bottle placed upright at the center of the tray. Be sure to leave the lid off.
3.\tForm the model volcano's open top tightly around the mouth of the bottle.
4.\tMix 1 tbsp. liquid dish washing soap, 1 tbsp. baking soda and a few drops of red food coloring in a cup.
5.\tPour the mixture carefully into the bottle.
6.\tSet the volcano in an open area, preferably outside.
7.\tPour 1/4 c. white vinegar into the bottle and stand back to watch their volcano erupt!
p/s can also skip step 1-3.
The chemical reaction
NaHCO3 + CH3COOH --> Na+ + H2O + CO2 + CH3COO-
Carbon dioxide is released creating the fizz.
(Also actually released from Volcanos)
I would like the children to enter this virtual simulation website together to create and explore their own volcanic eruptions by varying the conditions (viscosity and gas) of a volcano.
http://kids.discovery.com/games/pompeii/pompeii.html
For additional information, this very informative website will be provided to children for exploring the topic – VOLCANO at their own time.
http://www.volcanolive.com/index.html -
Enjoy!! When I have time I load up some more of my collections.. stay tuned..
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buds:
Oh really..haha.. i thought kids here would learn a lot from it.A tad?
A lot lah...
Especially the much
later episodes. :roll:
Some are funny too. -
Hi All
With regards to the experiment on surface tension of water, might be good to teach your child to apply that concept instead of just learning it. In Science exam nowadays, application of concepts is v important.
For e.g., how does spraying insecticide on water kill the mosquito larva and pupa? It's a common misconception among kids that the breathing tubes are blocked so the larva and pupa died because they cannot take in air, but in actual fact, it's because insecticide lowers the surface tension and cause the larva and pupa to drown.
Plus you can also introduce the idea of how some insects seem to be able to float or walk on water surface like the water skater. Hope this information is helpful to you.
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Thanks for the ideas! i will try out some of them during the hols!
Some months ago, I did some simple experiments with my girl too. of course, the classic volcano, crystal formation and density.
Growing crystals
http://preciouscheryl.blogspot.com/2009/10/growing-crystals.html
Density
http://preciouscheryl.blogspot.com/2009/10/does-egg-float.html
Volcano
http://preciouscheryl.blogspot.com/2009/09/volcano.html -
Sounded really cool.
Since its holiday, I will give it a try with my kids.
Thanks for the info -
Any1 know where we can find books on simple science experiments for kids age 7-10? Thanks.
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notknow11:
Any1 know where we can find books on simple science experiments for kids age 7-10? Thanks.
Libraries should have some in the kids' non-fiction section. Or you can google for ideas. Science textbooks also have a few you can get started on.
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