1. Warm-up Be ready for class
Without talking: Read the new objectives, essential questions, high school and global connection on the board.
Today we will complete the pre- knowledge check for our next unit.

2. What are the different layers of the Earth?
Warm-up
What are the different layers of the Earth?
What is density and how does it relate to the Earth’s layers?

3. Warm-up
Which is a solid, the inner or outer core of the Earth?
Describe the unique way heat is transferred throughout the mantle.

4. Answer the following in complete sentences:
Which of the following are parts of Earth’s plates?
A. Continents but not ocean basins
B. Ocean basins but not continents
C. Both ocean basins and continents
D. Neither ocean basins nor continents
Which of the following is TRUE about Earth’s plates?
A. They are separated by oceans.
B. They are piled on top of one another within the earth.
C. They fit closely together with each plate touching all the plates that are next to it.
D. They are surrounded by melted rock and do not touch each other.

5. Warm-Up: 09/26 Copy down homework Read you agenda
Need a pen/pencil to write with
Write out the question and answer on your own paper.
What is the difference between the outer core and the inner core?

6. Objectives
Students will summarize the structure of the Earth, including the layers, the mantle and core based on the relative position, composition and density.

7. Earth's Interior Notes

8. Earth’s Layers Vocabulary
Inner core – a ball of hot solid metal at the center of the Earth
Outer core – liquid layer of metal that surrounds the inner core
Mantle – Earth’s thickest layer between the outer core and crust made of magma

9. Crust – the top layer of Earth made of a thin layer of cool rock
Lithosphere – the layer of Earth made of the crust and the rigid rock of the upper mantle which is broken into tectonic plates
Asthenosphere – the layer in Earth’s upper mantle directly under the lithosphere in which rock is soft and weak because it is close to melting

10. Cross-Section of the Layers of the Earth

11. Tectonic plates-large pieces of the lithosphere
Tectonic plates-large pieces of the lithosphere. These are called giant slabs of rock.
Continental drift – a hypothesis that Earth’s continents move on the surface
Fault lines – a crack in Earth’s surface

12. Pangaea – a hypothetical supercontinent in which all continents were once attached. It began breaking apart about 200 million years ago
Convection – a process by which energy is transferred to cause warmer less dense air or liquid to rise while the dense cooler liquid or air is pushed down.

13. Data Table Name of Layer Pressure crust 6-70 km mantle ~2,900 km
Thickness
(Depth)
What Layer is Made Of –
Consistency
Pressure
crust
6-70 km
solid rock, mostly granite and basalt
Low
mantle
~2,900 km
hot, solid and liquid (molten)
material
Medium
outer core
~2,300 km
molten iron and nickel
High
inner core
~2,400 km
solid iron and nickel
Super Intense

14. What are the layers of the Earth?

15. Outer core
Earth’s Crust
Mantle
Inner core