Density is the measurement of how compact a substance is how much of it fits in a certain amount of space.
Build your own lava lamps.
This is a safe and fun science experiment you can do at home or in a classroom.
Fill the bottle two thirds full of oil.
It s a lot of fun if you have a group of children and each child can have their own supplies.
Watch your lava lamp erupt into activity.
Children should show an adult these instructions and ask for help and not attempt this on their own.
Fill the rest with water leaving a little of space at the top.
First fill the empty water bottle about 2 3 full with vegetable oil.
You can also add some glitter for some extra bling.
How to make the lava lamp.
Oil and water just do not mix.
Lava lamps are both mesmerising and beautiful to look at and in this daily dose we re going to make our own.
Remember that the colors will blend together so be careful of your mix.
As the reaction slows down simply add more alka seltzer.
Then add water until there s around an inch remaining at the top.
Notice that the water sinks below the vegetable oil.
I ll show you two different ways to make your la.
Leaving it in longer will give a darker color but will also increase the tendency to bleed into the brine.
The alcohol and oil used in this lamp are flammable and must be treated with care when heating them to get the lava moving.
Commercial lava lamps use a proprietary combination of melted waxes.
A lava lamp works because of two different scientific principles density and polarity.
I just made two different lava lamps using one color for each bottle.
Make your own lava lamp.
Watch what happens to the water with your kids.
It will sink slowly beneath the oil layer creating lots of bubbles.
Easy to make lava lamp science experiment.
The food coloring droplets will fall through the oil and rest on top of the water.
The oil floats on the surface because the water is heavier has a higher density than oil.
What you will need to make your lava lamp science experiment is in this picture.
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Make this lamp only with adult supervision.
Make your own lava lamp instructions.
When the bubbles have stopped dribble a couple drops of food coloring into the bottle.
Break open an oil soluble marker or pen and place the inked felt into a container of benzyl alcohol.