Education.com
Try
Brainzy
Try
Plus
Anonymous
Anonymous asks:
Q:

WHAT IS THE HYPOTHESIS FOR A HOMEMADE LAVA LAMP

In Topics: Helping my child with science
> 60 days ago

|
fritzr
fritzr writes:
Assuming what you mean to ask is what are the scientific principles demonstrated by a lava lamp, here is the text of a comment I entered to answer similar questions on the homemade lava lamp activity (linked below):

This project demonstrates a number of different principles.  The first is is that the molecules of water do not mix with the molecules of oil no matter how much you shake the bottle.  The food coloring only mixes with the water which is why it doesn't color the oil.  The second principle demonstrated is density.  Water is denser (heavier) than oil which is why the water sinks to the bottom when you pour it in.  It's also why oil floats on top of the water if a ship spills oil in the ocean.
 
Alka-Seltzer reacts with the water to create tiny bubbles of carbon dioxide gas.  The bubbles attach themselves to blobs of colored water and cause them to float upwards.  When the bubbles reach the surface and pop the color blobs sink back to the bottom.

Did you find this answer useful?
5
yes
0
no
dgraab
dgraab , Parent writes:
Hi,

For more information about the scientific method and helping your child with science projects, review the many related articles here:
http://www.education.com/topic/help-child-with-science-fair-projects/
> 60 days ago

Did you find this answer useful?
0
yes
1
no
readyforaeducation
readyforaed... writes:
If we use use different water on one oil uthe we wilgwt different results on the ohers
> 60 days ago

Did you find this answer useful?
0
yes
1
no
Answer this question