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Notes from a science class during which students learned about Earth's structure, the three types of heat transfer, and how geologists study the Earth's layers. Topics covered include the order of Earth's layers, examples of heat transfer, and methods used by geologists to collect samples.
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Ella DeBiassePeriod 1 9/29/15Science Blog
Monday During Class on Monday we played game involving Earth's Structure. We Reviewed the basic information for our test on Tuesday. On Monday, we got to understand a little better how Earth’s structure is laid out. We all learned the order the layers go, crust, upper mantle, lower mantle, outer core, and inner core. The Lithosphere is part of the crust and upper mantle. The Asthenosphere is part of the upper mantle and a little bit of the lower mantle. Another topic we learned about was the 3 types of heat transfer. The first type of heat transfer is Conduction. Conduction is heat transfer through direct contact. An example would be when you touch a pot on the stove your hand would burn because the pot is hot. The second example of heat transfer is Convection. Convection is heat transfer through movement in currents (liquid or gas). An example would be when water is boiling on the stove the water at the bottom gets warm. The hot water then rises and cooler water moves down to replace it, causing a cycle. The last example of
heat transfer is Radiation. Radiation is heat transfer through waves in space. An example would be when the sun heats up the sand on the beach and when your feet step on the sand your feet would burn.
Tuesday
On Tuesday we watched a video “Amazing Planet”. One topic we learned from the video was how geologists study the Earth’s layers. An example would be volcanoes. Volcanoes shoot out parts of rock from the core giving geologists samples. Which they then collect when the lava spews out while wearing fire retardant suits,boots,gloves, and helmets. Some other examples of how geologists find samples of the Earth’s layers is Seismic waves, core samples, and more. This is what we call stratigraphy (The study of rock layers and their geologic history). Volcanoes and Plate Tectonics were also a very important topic on Tuesday. When volcanoes shoot out there lava it flows outward in all different direction causing smoke. When the volcanoes harden after several months vegetation (little plants) grows. After roughly a year several large