TAMU GEOL 101 Exam 1 questions with correct answers

How old is the Earth? CORRECT ANSWER 4.6 billion years old Which of the following is the thickest sphere on Earth? CORRECT ANSWER geosphere Wet mud and earthworm found on the edge of a lake would be considered to be part of which sphere? CORRECT ANSWER biosphere, hydrosphere, geosphere On Earth, chemical differentiation lead to the formation of layers in Earth based on the ______ of the materials that make up those layers. CORRECT ANSWER density Between continental and oceanic crust, ______ crust is denser and ______ crust is thicker. CORRECT ANSWER oceanic ; continental Which layers in Earth's geosphere are liquid (check all that apply)? CORRECT ANSWER outer core What defines the boundary between the lithosphere and asthenosphere? CORRECT ANSWER This is a temperature boundary, where peridotite mantle is hot enough to behave more like a plastic than a rigid solid. If you have a metamorphic rock, and you bury it and heat it until it melts, and then bring it closer to the surface where it cools and solidifies again, the resulting rock would be _______. CORRECT ANSWER igneous