Download Earth`s Layers Unit Study Guide 1) List Earth`s layers in order from

Earth’s Layers Unit Study Guide
1)
List Earth’s layers in order from highest to lowest TEMPERATURE.
Inner core, outer core, mantle, crust
2) List Earth’s layers in order from highest to lowest DENSITY.
Inner core, outer core, mantle, crust
3) List Earth’s layers in order from highest to lowest PRESSURE.
Inner core, outer core, mantle, crust
4) List Earth’s layers in order from THICKEST to THINNEST.
Mantle, outer core, inner core, crust
5) If you compared rocks from the crust to rocks in the mantle what differences would you notice?
The mantle rocks would have a higher density and a higher temperature.
6)
What is the crust made up of?
Mainly basalt and granite rocks, with a high amount of the elements OXYGEN, SILICON, MAGNESIUM, and
small amounts of IRON and NICKEL.
7) What is the mantle made up of?
OXYGEN, SILICON, a higher amount of MAGNESIUM than the crust, and small amounts of IRON and NICKEL.
The rock in the mantle is hot enough to flow like a “semi-liquid”.
8) What is the outer core made up of?
Mostly IRON and NICKEL in a molten liquid state.
9)
What is the inner core made up of?
Solid IRON and NICKEL.
10) The deepest mines and wells can reach into what layer?
Crust
11) Earth’s crust is broken up into plates. What are the two types of crustal plates?
Continental plates and Oceanic plates
12) What would happen if a very dense oceanic plate collided with a less dense continental plate?
The oceanic plate would sink, and the less dense continental plate would rise about the oceanic plate.
13) The inner core is the layer with the highest temperature, so why is it solid iron instead of molten iron?
The pressure is so high in the inner core that the molten iron is pressed into a sphere of solid iron.
14) Explain what is occurring in the mantle to cause it to have a CONVECTION CURRENT.
The warmer, less dense rock rises to the top of the mantle where it cools and becomes denser. The denser
rock sinks towards the center of the Earth where it is warmed again.
15) Define convection.
Convection is thermal energy transferred by the circulation of a liquid or a gas.