MEA
Learning Objectives Worksheet for Exam 1

Learning Objectives Worksheet for Exam 1 - Learning...

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1 Learning Objectives Worksheet for MEA 101 Exam 1 This worksheet is intended to guide your exam preparation by illustrating how to best respond to the stated learning objectives and to give you the necessary space to create complete responses. The first pages illustrate some potential responses to individual learning objectives. Try to model your responses on the best practice examples. Sample Learning Objective #1 with responses I can describe the principal differences between Earth’s compositional layers. Weakest responses: too short, not relevant, wrong Yes. Core, mantle, crust. Lithosphere and asthenosphere are the most important compositional layers. Weak responses: brief random list of facts They are composed of different materials; the core is hotter than the crust; the crust is a very thin layer and is part of the lithosphere. Medium responses: more details but disjointed They are composed of different materials with dense materials in the core and lighter material closer to the surface. The core is divided into an inner and outer core; part of the core is molten. The outer layer is the crust which is different under the continents and oceans. The crust sits on top of the mantle and parts of the crust and mantle make up the lithosphere. Medium-strong responses: don’t address some aspects of learning objective, may have too much unnecessary detail. Earth is made up of three compositional layers, the crust, mantle, and core. The crust is made up of oceanic or continental crust and is approximately 5-10 km or 35-40 km thick, respectively. The mantle runs from the base of the crust to a depth of about 2900 km. Rocks in the mantle are more dense than those in the crust. The core makes up the rest of Earth’s interior down to a depth of 6370 km (big core). The core is in two parts, a molten outer core and a solid inner core. Strong responses: uses complete sentences, addresses all aspects of learning objective. Earth’s interior was very hot when the planet formed. Dense mater ials (iron, nickel) sank to the core and lighter minerals rose to the surface to form the crust. Earth has three compositional layers: t h e crust, mantle, and core. The outer layer, the crust, is composed of less dense rocks in the continental crust and more dense rocks in the oceanic crust. The thin crust lies on top of the much thicker mantle that makes up nearly half of Earth’s radius. The very slow flow of material in the uppermost mantle (asthenosphere) provides the driving force for plate tectonics.
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2 Sample Learning Objective #2 with responses I can describe how ocean basins form and grow Weakest responses: too short, not relevant, wrong Some oceans are narrow and some are wider. This is related to the ages of the ocean floor.
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  • Spring '08
  • Kimberley
  • Plate Tectonics, Pacific Ocean, Crust, Compositional Layers

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