Name _________________________________________________ Date ___________ Read pp. 19-23 Plate Tectonics - continued A Journey to the Center of the Earth (page 19) How does the temperature change as you go from the surface toward the center of the Earth? How does pressure change as you go from the surface toward the center of the Earth? The Crust The _________________ is a layer of rock that forms Earth’s outer skin. Is the following sentence true or false? The crust is thinnest under high mountains. ________ The dark-colored rock that makes up most of the oceanic crust is _________________. The light colored rock that makes up most of the continental crust is ________________. The Mantle (pages 20-21) Match the name of each layer of Earth with its description. __________ mantle a. rigid layer that includes the upper part of the mantle and the crust __________ lithosphere b. layer of hot rock between the crust and the core __________ asthenosphere c. soft layer just below the lithosphere Is the following sentence true or false? The asthenosphere floats on the lithosphere? _______ Is the following sentence true or false? The mantle is nearly 3,000 km thick. ___________ The Core (pages 21-23) Circle the letter of each sentence that is true about Earth’s outer core. a. b. c. d. It makes up about 25% of the Earth’s total volume. It is made of solid metal. It contains iron and nickel. It behaves like a solid. Circle the letter of each sentence that is true about Earth’s inner core. a. b. c. d. It consists of molten metal. It behaves like a thick liquid. It is not very dense. It is under extreme pressure. Label the main layers of the Earth.