Earth 1
What are the three main layers of Earth?
Crust, mantle, core
Crust
Which is thicker? Continental or oceanic crust?
Continental
What is the hot layer of rock between the crust and core?
Mantle
Which layer of Earth is under the highest pressure?
Inner core
This layer is the most dense
Core (Inner core)
This layer of Earth is the coolest
Crust
Meso means:
Middle
As you go deeper in the the Earth, what happens to the temperature?
It increases.
the inner core is _________, while the outer core is _________.
solid, liquid
Which layer is warmer? Lithosphere or asthenosphere?
Asthenosphere
This is the thickest layer of the Earth
Mantle
Name the two types of crust
Continental and Oceanic
The crust and the upper part of the upper mantle is called:
Lithosphere
What causes the mechanical behavior of the Asthenosphere?
High temperature and pressure.
The inner core is made of what two elements?
Iron and Nickel
What separates the Crust and the Mantle
Earth's magnetic field is caused by
The motion of iron and nickel in the outer core
How do scientists know about the different layers of the Earth?
Through convection currents, seismic waves
This layer makes up about 1/3 of the Earth's mass:
Core
Magnetic Evidence, Laboratory Experiments, Meteorites
describe the mechanical behavior of the asthenosphere
it behaves like a soft plastic (semi-solid or viscoelastic)
this structural layer is brittle solid
lithosphere
this layer is the dense, metallic center of the planet made up of mainly iron
the inner core
Three main elements making up the mantle
Oxygen (O), silicon (Si), and magnesium(Mg)