1. Formation and Structure of the Earth Section Quiz Review

2. on a diagram of the Earth’s interior, label the following parts: crust, inner core, mantle, outer core, lithosphere, asthensophere

3. Describe the following parts of the Earth: crust, inner core, mantle, outer core, lithosphere, asthensophere The crust is the thin, rigid layer of lighter rock that covers the earth’s surface; it is solid and reaches about 65 km into the interior of the earth; it is attached to the mantle by the Mohorovic layerThe crust is the thin, rigid layer of lighter rock that covers the earth’s surface; it is solid and reaches about 65 km into the interior of the earth; it is attached to the mantle by the Mohorovic layer The mantle is the layer of molten rock below the crust that extends from the crust to the core; the upper portion just below the crust is more solid while the lower portion that reaches the core is more liquid; it is the thickest layer of the earthThe mantle is the layer of molten rock below the crust that extends from the crust to the core; the upper portion just below the crust is more solid while the lower portion that reaches the core is more liquid; it is the thickest layer of the earth

4. Describe the following parts of the Earth: crust, inner core, mantle, outer core, lithosphere, asthensophere The lithosphere includes all of the crust and the upper mantle which is mostly solid; it is broken into sections called plates that float and move on the layer underneathThe lithosphere includes all of the crust and the upper mantle which is mostly solid; it is broken into sections called plates that float and move on the layer underneath The asthenosphere is made from the lower portion of the mantle that is more molten than the upper part; the plates of the lithosphere floats on this layerThe asthenosphere is made from the lower portion of the mantle that is more molten than the upper part; the plates of the lithosphere floats on this layer

5. Describe the following parts of the Earth: crust, inner core, mantle, outer core, lithosphere, asthensophere The core in the central part of the Earth; it is made of the outer core and the inner coreThe core in the central part of the Earth; it is made of the outer core and the inner core The outer core is liquid/molten iron and nickel; it flows around the inner core; as it moves it produces the Earth’s magnetic fieldThe outer core is liquid/molten iron and nickel; it flows around the inner core; as it moves it produces the Earth’s magnetic field The inner core is solid iron and nickel; it is about twice as big as the Earth’s moonThe inner core is solid iron and nickel; it is about twice as big as the Earth’s moon

6. Describe the sources of the Earth’s internal heat The surface of the earth is heated by radiation from the sunThe surface of the earth is heated by radiation from the sun The earth has stored heat from when it was formed out of molten magmaThe earth has stored heat from when it was formed out of molten magma The weight and pressure of the crust and mantle causes the core to produce heatThe weight and pressure of the crust and mantle causes the core to produce heat The decay of radioactive elements in the crust, mantle and core produces heatThe decay of radioactive elements in the crust, mantle and core produces heat The friction of rock layers moving in the crust produces heatThe friction of rock layers moving in the crust produces heat

7. Describe the nebular theory of the formation of the earth A large cold, cloud of interstellar gas is formed during the explosion of a star (supernova)A large cold, cloud of interstellar gas is formed during the explosion of a star (supernova)

8. Describe the nebular theory of the formation of the earth Small particles in this cloud collide to form larger particlesSmall particles in this cloud collide to form larger particles The large particles have more gravity so they begin to attract other materials and become even largerThe large particles have more gravity so they begin to attract other materials and become even larger

9. Describe the nebular theory of the formation of the earth These particles continued to grow larger forming spheres called planetessimalsThese particles continued to grow larger forming spheres called planetessimals

10. Describe the nebular theory of the formation of the earth These planetessimals collided with each other and combined together to form protoplanetsThese planetessimals collided with each other and combined together to form protoplanets Some of these protoplanets collided and combined to form the earth and the other rocky planetsSome of these protoplanets collided and combined to form the earth and the other rocky planets