1. Ch. 1.1 Earth’s Interior

2. A. The Science of Geology
1. Geologist -- scientists studying the forces that make and shape planet Earth.
Study Rock for-
chemical, physical properties
mapping location
describe landforms and features
clues to Earth’s history

3. B. Studying Surface Changes
1. What causes Earth’s surface to change?
a). Constructive Forces
Build up mountains and landmasses
Ex: island formation
b). Destructive Forces
Wear away mountains and other features on the surface
Ex: water and/or wind

4. C. Finding Indirect Evidence
1. Seismic waves
a). study how they travel through Earth
b). Speeds, paths, data
reveals layers of Earth

5. D. A Journey to the Center of the Earth
Temperature…
increases
And
Pressure…
a force pushing on a surface or area…
as you go deeper inside Earth

6. D. A Journey to the Center of the Earth
3 Layers to the Earth
Crust
Mantle
Core
outer core
inner core

7. 1. The Crust Outer most layer Thinnest layer -- ranging from 5 - 40 km
Continental crust granite
Oceanic crust basalt

8. 2. The Mantle Located beneath the crust Is about 2,900 km wide
A layer of hot rock
Has 3 layers
Lithosphere
means stone
rigid layer
Asthenosphere
means weak
Soft , tar-like
Lower Mantle
solid
2. The Mantle

9. a). Outer Core 3. The Core is divided into 2 sections:
Beneath the mantle
molten iron and nickel
a thick liquid
movements create Earth’s magnetic field

10. b). Inner Core Beneath Outer Core
A dense ball of solid iron and nickel

11. E. Earth’s Magnetic Field
Earth’s outer core
spins around a
solid inner core
of molten
iron that creates
a magnetic field.