Earth’s Interior Chapter 4 Section1

• What is a geologist?

• What is Geology?

• Geologists are scientists who study the forces that make and shape planet earth.

• Geology- is the study of planet Earth.

•What is geology video 1 min

• What are the two types of forces?

• Geologists divide the forces that change earth’s surface into two forces:

• Constructive- builds land up (mountains)

• Ex: earthquakes, volcanoes, and deposition

• Destructive – wears away the land.

• Ex: weathering

• How do we know what the inside of the Earth is made out of?

• Geologist use the data record from seismic waves created by earthquakes. They study how they travel through earth and predict what the interior of Earth is made of.

• Seismic waves video

• Describe the two types of crust. What are they made of?

Layers of the Earth• Crust – The layer of rock

that forms earth’s outer skin.

Two Types of Crust– Oceanic crust is mostly

made of Basalt rock. – Continental crust –made

mostly of Granite.

• Mantle

• Describe the two layers of the mantle.

• Mantle (Middle Layer)

Made of two layers – Asthenosphere – the upper

layer of the mantle and is made of molten magma. (tar or pudding like)

– Lower mantle- made of hot solid magma.

• What two layers does the lithosphere consist of.

• The lithosphere is a solid layer made of the crust and upper part of mantle.

Lithosphere video clip

• Describe the two layers of the core.

• The_Inner_Core video

• The core video.asf

• Core

Two Layers of the core– Outer core is a layer of molten

metal

– Inner core is a dense ball of solid metal. The metal is made of iron and nickel.

Fill in the chartMain Layer

Sub-layer Solid or molten

What is the layer made of?

Crust Oceanic Crust

Continental Crust

Lithosphere

Mantle Asthenosphere

Lower Mantle

Core Outer Core

Inner Core

Layers of the Earth Crust Oceanic Crust Solid Basalt Rock

Continental Crust Solid Granite Rock

Lithosphere Solid Crust and small solid layer of mantle.

Mantle Asthenosphere Molten Magma

Lower Mantle Solid Magma

Core Outer Core Molten Iron and Nickel

Inner Core Solid Iron and Nickel

Layers of the Earth

A.

B.

C.

G.

D.

E.

F.

A.Inner Core = Solid Metal B.Outer Core = Molten Metal C.Mantle = Solid MagmaD.Asthenosphere = Molten Magma E. Lithosphere = Solid Crust and MagmaF.Continental Crust = Solid granite rock G.Oceanic Crust = Solid Basalt Rock