Unit 2 Study Guide: Lithosphere Part 1: Rock Cycle 1. List the 3 main types of rocks. a. b. c. 2. Which type of rock is characterized by a “layered” look due to the sediments being deposited in layers over long periods of time? ___________________ 3. Which type of rock is formed under extreme heat and pressure? ________________ 4. Metamorphic and igneous rock are turned into sediment by the processes of _______________ and _______________. 5. Magma is formed by melting rock below the earth’s surface. When it reaches the earth’s surface it is called __________. 6. Label the Rock Cycle diagram Word bank: magma, sedimentary rock, igneous rock, sediment, heat & pressure, weathering & erosion Part 2: Plate Tectonics 7. Idea which states that the earth’s crust and ______ mantle are composed of rocky plates which are moving in relation to each other. 8. Describe the theory of continental drift. 9. The lithosphere is composed of the ________ and upper ______. 10. 11. The boundaries between the plates are called plate boundaries and there are _____ types. 12. Almost all volcanoes and __________________ occur along plate boundaries. 13. Seafloor ________ refers to the action of two oceanic plates moving _________ from each other at a ________ boundary. 14. When an oceanic plate collides with a continental plate, the ______ plate is forced under the _____________ plate in a process called subduction. 15. Deep-sea trenches are formed when two plates come together, or ____________. As the plates push against each other they create a deep trench such as the Marianas trench in the Pacific Ocean which is _______ miles deep. 16. Oceanic ridges are formed at a ___________ plate boundary. As the plates move apart, magma rises to the surface and creates new crust. 17. Mountain ranges are formed at a ____________ plate boundary. 18. Label and describe each of the types of plate boundaries. 19. What is a hot spot? FrickCameron Monday, February 17, 2014 9:53:14 AM ET