12-7-17 Layers of Earth Review

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

Homework Tonight: Study for the quiz tomorrow Identify the layers of the Earth Describe the composition of the layers of the Earth

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

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

Core Word: Crust

Core Word: Mantle

Core Word: Core

4 Corners Review

1. Which layer is plastic? Asthenosphere Lithosphere Mesosphere Outer core

2. There are two types of crust. Which ones are they? Mesosphere and asthenosphere Asthenosphere and oceanic Continental and oceanic Continental and asthenosphere

3. Which phrase best describes the lower mantle? Solid and extremely hot Cool and soft Flexible and cool Hot and flows like ketchup

4. In which layer are the tectonic plates located? Asthenosphere Lithosphere Mesosphere Outer core

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

6. Which layer contains the convection currents? Asthenosphere Lithosphere Mesosphere Outer core

7. The bulk of Earth’s mass (almost 2/3 of it) is located in which layer? Asthenosphere Continental crust Mantle Lithosphere

8. What layer are you currently living on? Asthenosphere Oceanic crust Mesosphere Lithosphere

9. What is Earth’s inner core mostly made of? Iron Granite Oxygen Aluminum

10. Name the layer labeled #6 Inner core Mantle Mesosphere Asthenosphere