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12-7-17 Layers of Earth Review
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Do Now: Answer the following in your Science Notebook
Explain how the parts of a hard-boiled egg correspond roughly to Earth’s layers. Explain the differences between continental crust and oceanic crust. Continental crust: under the continents, thicker, less dense Oceanic crust: under the oceans, thinner, more dense
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Homework Tonight: Study for the quiz tomorrow
Identify the layers of the Earth Describe the composition of the layers of the Earth
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Homework Review: Trade & Grade – Take out a colored pen
Continental crust Crust Mantle Outer core Inner core Mesosphere Asthenosphere Lithosphere Oceanic crust 11. Convection currents
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Layers of Earth Review: Word Webbing
Materials needed: paper, pencil/pen In groups of 4, teams will create a Word Web based on a “core” word. One person will begin with the paper and pencil and make a word association with the core word. Then, pass the paper and pencil to the next person in the group. For example, if the core word is “Summer”, you might make a web like this: Summer Sun Shiny Hot Ice cream
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Core Word: Crust
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Core Word: Mantle
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Core Word: Core
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4 Corners Review
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1. Which layer is plastic? Asthenosphere Lithosphere Mesosphere
Outer core
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2. There are two types of crust. Which ones are they?
Mesosphere and asthenosphere Asthenosphere and oceanic Continental and oceanic Continental and asthenosphere
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3. Which phrase best describes the lower mantle?
Solid and extremely hot Cool and soft Flexible and cool Hot and flows like ketchup
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4. In which layer are the tectonic plates located?
Asthenosphere Lithosphere Mesosphere Outer core
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5. What best describes the effect that the spinning of Earth’s core has?
It creates gravity It creates matter It creates mass It creates the Earth’s magnetic field
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6. Which layer contains the convection currents?
Asthenosphere Lithosphere Mesosphere Outer core
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7. The bulk of Earth’s mass (almost 2/3 of it) is located in which layer?
Asthenosphere Continental crust Mantle Lithosphere
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8. What layer are you currently living on?
Asthenosphere Oceanic crust Mesosphere Lithosphere
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9. What is Earth’s inner core mostly made of?
Iron Granite Oxygen Aluminum
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10. Name the layer labeled #6
Inner core Mantle Mesosphere Asthenosphere
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