A Mom and a Family of Men!

Monday, May 24, 2010

Eli's Floating Crayon ~ Oceanography Experiment

Elijah has been learning how the salt in the sea changes many things that happens in fresh water. He learned that the salt in the sea water helps the ocean to support weight better. He is very willing to try this out if we ever make it to Florida to visit our family. ;)

We learned that the seas have a lower freezing point than fresh water as well.

We gathered up a glass, poured in one cup of water, half a crayon (do not use the cheap waxy ones use crayola), 2 tablespoons of salt, and a spoon.

I told him to first place the crayon half in the clear fresh water.


It sank very quickly!

Next I had him stir in the salt and try it again.


The crayon did indeed float this time!

We talked about the fact that the salt water has more molecules than the cup of fresh water.

Remy thought this was awesome, too.


Julia said...

Oh, wow, I love this one.. so neat!

Phyllis said...

Cool! We did this with an egg, ( http://homeschooljournal-bergblog.blogspot.com/2010/03/floating-egg.html )but a crayon is even easier. Love your experiments!

Sherri said...

Y'all have been doing so many cool projects....you rock!!

Mama Teaching 2 said...

Phyllis, NEATO! We may have to try the egg as well.

Sherri, your so sweet! Love you, friend. We are trying to work before Bumble shows up. HA HA

Rhonda said...

Very cool! I like the fact that Remy enjoyed it too. I love when the littles tag along with the older ones for the experiments.