Thursday, November 14, 2013

Sand Reflection

A grain of sand can tell you a lot about the earth. As i examined sands from different places around the world I noticed how different each particle was. Even sands from beaches a half hour away from the other differed a lot. I saw sands that were round and tan, and others that looked like little crystals  with that being said, i saw gains that were quite large and grains that were tiny. Our essential question that we wee to answer by doing the experiment is, " how can examining sediment provide a lue to its origin?" We can discover a sediment's origin by studying its size, color, texture and rounding. These aspects all tell us something about where the sediment came from. Grain size is an indicator of how far the sediment has traveled. Texture an tell how a sediment was transported(lots of waves or not). Sorting also depends upon the distance the sediment has been transported. One of the beaches i hose was Marthas Vineyard, and the sand under the microscope was very glossy/white and large. It was also well sorted. Another sand i looked at was St. Kits and i noticed that this sand had ore tan particles than the others i looked at. Also the particles were very little and quite poorly sorted. This differed from Marthas Vineyard a lot. In the activity i did this for eight other sands. Eah particle was different. That shows that the waves, climate, and location are all aspects.

No comments:

Post a Comment