Ron Capurso

SCIED411

Lesson Plan

Start: About the standard:

- Describe the physical appearance and processes of the Earth

- Specifically layers

1) Earth’s formation:

- Early on ~4.6 Ga. Earth was homogeneous

- Separated, heavier material to the center

- Formed layers we see today

2) Earth’s Layers:

A) Crust

- Extremely thin compared to the rest of the earth (not to scale)

- includes the rock under oceans and continents

B) Mantle

- Made of solid rock

- Able to flow, seen over long time spans (Asphalt)

- Due to convection, drives plate movement

C) Outer Core

- Liquid Metal

- Extremely hot, pressured

- Flows...hypothesized to cause magnetic field

D) Inner Core

- Immense pressure, solid metal

- 3,000,000 times more pressure than you feel!

End: Summary

- Important things to remember:

1) Earth formed 4.6 Ga.

2) Heaviest materials towards the center

3) 4 major layers