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ESSENTIAL QUESTION

How has Earth's structures changed and what has contributed to that change?

Common Core Standards 2017-2018 Print Unit 6
Intermediate - Fine Arts - Grade 4 - Unit 6
Earth Structures
In this unit students will discover the Earth's history. They will become geologists as they determine how Earth looked long ago and how it is constantly changing. Also, they will use these ideas to learn how volcanoes, earthquakes, and tsunaml's are formed.
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By the end of the unit students will know: Plate tectonics accounts for important features of the Earth’s surface and major geological events. Evidence for plate tectonics is derived from the fit of continents; the location of earthquakes, and midocean ridges; and distribution of fossils, rock types, and ancient climatic zones. The Earth is composed of several layers: a cold, brittle lithosphere, a hot, convecting mantle; and a dense, metallic core. These layers have different densities, compositions and temperatures (energy). Lithospheric plates the size of continents and oceans move at rates of centimeters per year responding to convection currents in the mantle. Geologic events, such as earthquakes and mountain building, result from movement of the plates. Earthquakes are sudden motions along the breaks in the crust called faults and that volcanoes and fissures are locations where magma reaches the surface. Epicenters of earthquake can be determined. The effects of the earthquake on any region varies, depends on the size of the earthquake, the distance of the region from the epicenter, the local geology, and the type of construction in the region. Every plate boundary is a dynamic place resulting in changes to the earth’s surface. Mountains and sea floor trenches can be explained if you understand the possible combinations of crust movement at the boundaries. When two continental plates collide, large mountain ranges (like the Himilaya) are formed. Because an oceanic plate will subduct, deep sea trenches result. Even transform boundaries involve great pressure that can alter land formations and result in small mountain ranges

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06-ESS2-2 Construct an explanation based on evidence for how geoscience processes have changed Earth's surface at varying time and spatial scales.
06-ESS2-3 Analyze and interpret data on the distribution of fossils and rocks, continental shapes, and seafloor structures to provide evidence of the pase plate motions.


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I can analyze evidence to determine the possible arrangement of continents in the past.

 

I can describe how plates move to create landforms and geologic processes.

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plate tectonics, volcano, earthquake, plate boundaries, subduction, sea floor spreading, continental drift, trenches, Midocean Ridge, convection currents, magma, lava, crust, core, mantle, seismograph, epicenter, fault, transform boundary, divergent boundaries, convergent boundaries

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