NOV 19, 2015 9:07 AM PST

Check Out This Density Experiment

WRITTEN BY: Anthony Bouchard


This density experiment is an excellent representation of how denser fluids fall to the bottom of a cup, while lighter fluids float to the top of a cup. In this experiment, a type of syrup, water, and a type of oil are used to represent different densities. The syrup is the densest, while the oil is the lightest.

After the fluids separate themselves, because the differences in density keep them from mixing, it is then possible to experiment with solids. Solids that are denser than the oil and water, but not the syrup, will fall through the oil and water, but float on the surface tension of the syrup, but solids that are lighter than everything, including the oil, float atop the oil.

For example, a metal nut has a higher density than syrup, so it falls to the bottom of the cup. A grape has a higher density than water, but not syrup, so it floats atop of the syrup and sinks to the bottom of the water. A plastic cap as higher density than oil, but not water, so it sinks to the bottom of the oil and floats atop the water. And finally, a sponge, which is lighter in density than even oil, floats at the top of the cup.

Pretty nifty, eh? - Try this with the kids and watch their mouths drop!

About the Author
Fascinated by scientific discoveries and media, Anthony found his way here at LabRoots, where he would be able to dabble in the two. Anthony is a technology junkie that has vast experience in computer systems and automobile mechanics, as opposite as those sound.
You May Also Like
NOV 06, 2020
Space & Astronomy
300 Million Planets in the Milky Way May Be Habitable
NOV 06, 2020
300 Million Planets in the Milky Way May Be Habitable
Researchers have found that there could be at least 300 million habitable worlds in the Milky Way galaxy. This could mea ...
JAN 17, 2021
Space & Astronomy
Astronomers Discover Planet with 3 Suns
JAN 17, 2021
Astronomers Discover Planet with 3 Suns
Having just one star in our solar system makes us an outlier in our galaxy. However, while most solar systems in the Mil ...
MAR 05, 2021
Plants & Animals
Scientists Heal Diseased Corals
MAR 05, 2021
Scientists Heal Diseased Corals
The world's coral reefs face numerous threats, including climate change, pollution, and habitat loss. Since 2014, an ...
MAR 18, 2021
Space & Astronomy
There May Be More Water-Rich Planets than Previously Thought
MAR 18, 2021
There May Be More Water-Rich Planets than Previously Thought
Researchers have hypothesized that a certain mechanism may mean there are many more water-rich planets with atmospheres ...
JUL 03, 2021
Space & Astronomy
Size of Planet Iron Core Depends on Star Magnetism
JUL 03, 2021
Size of Planet Iron Core Depends on Star Magnetism
Researchers led by the University of Maryland have found that the sun's magnetic field is the reason behind the larg ...
NOV 09, 2021
Space & Astronomy
10 Facts You May Not Know About Carl Sagan
NOV 09, 2021
10 Facts You May Not Know About Carl Sagan
Carl Sagan was born November 9, 1934, 87 years ago today. He would go on to become one of the most influential voices in ...
Loading Comments...