The second experiment was to created silt. We started with a sand mixture in a vial. We added water to the sand mixture and shook it like crazy. Then we set the shaken vials along with an unshaken vial of water and sand on a shelf over night. The next day we observed the vials and noticed that the shaken vials had 4 layers in them (sand, silt, water and air) while the unshaken vial had only 3 layers (sand, water and air). The students were amazed that they could create silt with sand and water!
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Monday, February 11, 2013
Sorting Rocks and Creating Silt
Our final week exploring rocks took us through 2 experiments. The first was using 3 screens to separate the different sizes of rocks. We were able to find 4 different sizes in our rock mixture. The students then identified the sizes with the labels provided. They did a great job!
The second experiment was to created silt. We started with a sand mixture in a vial. We added water to the sand mixture and shook it like crazy. Then we set the shaken vials along with an unshaken vial of water and sand on a shelf over night. The next day we observed the vials and noticed that the shaken vials had 4 layers in them (sand, silt, water and air) while the unshaken vial had only 3 layers (sand, water and air). The students were amazed that they could create silt with sand and water!
The second experiment was to created silt. We started with a sand mixture in a vial. We added water to the sand mixture and shook it like crazy. Then we set the shaken vials along with an unshaken vial of water and sand on a shelf over night. The next day we observed the vials and noticed that the shaken vials had 4 layers in them (sand, silt, water and air) while the unshaken vial had only 3 layers (sand, water and air). The students were amazed that they could create silt with sand and water!
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