What is sand? Where does it come from? Do people buy it from Lowe’s and spread it on the ground to make beaches?
To figure out what sand is, the kids grabbed some magnify glasses and took a closer look. They found small pieces of rock and shell. The conclusion: Sand is made from small pieces of rock and shells.
Next we built a “beach” to show how waves move rocks and shells. We added equal amounts of sand, aquarium gravel, and water (tinted with blue food coloring ~ just to make it pretty.) to a plastic container.
The conclusion: Waves move the sand and rocks. I explained that water bangs the rocks together, wears the rocks down (erosion), and helps form sand. Water and wind carries the sand to form beaches and dunes.
Next came the fun part of the experiment ~ we made sand. To do this the kids added some small rocks, which I washed really well to remove any dirt, and water to a plastic container. Emily shook the container, shook it some more,
and shook it some more.
After about 3 minutes we opened the container to see what was happening to the rocks. We discovered brown water. I poured some of the water into a clear container so they could see what was floating in the water. The girls conclusion: I didn’t wash all the dirt off the rocks.
I assured them that I did wash the rocks and had them look in the bottom of the container we used to shake the rocks. They discovered small pieces on the bottom ~ sand!
The Final Conclusion: I did wash the rocks! The brown water was caused from tiny rock particles floating in the water. The girls agreed that the water bounced the rocks together, forming sand.
We ended our experiment by reading Jump into Science Sand.
Wonder where Aiden was during all of this? I really thought he would enjoy this experiment. It included jumping around and water, two of his favorite things! Not this time ~ he worked on his tractor most of the time.
He did find a dead caterpillar.
I’ll just consider that his contribution to our science lesson!