I. Identification: Write the letter of the correct answer based on what is being described by each sentence. Choose your answer on the box below and then write your answer on the space provided. A. Upper Mantle B. Outer Core K. Asthenosphere F. Mantle G. Lithosphere H. Crust C. Continental Crust D. Lehman Discontinuity I. Gutenberg Discontinuity J. Inner Core E. Oceanic Crust 1. It is outermost and thinnest layer of the Earth. 2. It is composed mainly of iron and magnesium silicates. 3. It is mainly composed of basaltic igneous rocks. 4. It is composed of crystalline and granitic rocks. 5. It is the top layer of the upper mantle 100-200 km below surface. 6. It is a layer that includes the crust & the upper part most portion of the mantle. 7. It is a hot and liquid layer comprising mainly of nickel and (liquid) iron. 8. It is mostly made of solid iron and has little amounts of nickel. 9. It is called the transition region between outer core and inner core. 10. It is called the transition space between outer core and mantle