Earth’s Interior Interior=inside

Geologist A geologist is a scientist that studies the forces that shape earth’s surface 200 years ago was the start of geology Geology is fairly new

Rock The material that forms Earth’s surface Geologists study rocks

Forces that shape Earth Constructive Destructive

Constructive Building up Ex. Construction The building (MS) was changed constructively.

Constructive Mountain ranges forming(slowly) Over millions of years

Destructive Forces that slowly wear down the Earth’s surface Destroy =Destruction

Destructive Erosion by wind and water Think of our local beaches

Journey to the Center of the Earth Temperature increases Pressure increases

How do we know what inside Earth is like if we can’t travel through it? Scientist know this by studying seismic waves/data from earthquakes

If you took that journey you would find layers of the Earth Crust Mantel Core

Crust “skin” of earth Like the shell of an egg or onion skin VERY THIN!!!!!! Includes land on bottom of ocean floor Thinnest under the ocean(basalt) Thickest under mountains(granite) Is part of the lithosphere Most abundant element oxygen then silicon

Lithosphere Lithosphere means stone Crust and uppermost mantle Rigid Contains plates

Oceanic vs. Continental Crust Under oceans Under continents thinner thicker Made of basalt(think salty ocean) Made of granite More dense Less dense

Asthenosphere Gooey/bendable Plastic like rock Convection take place here Found in Upper mantle only NOT A LIQUID!!!! SOLID

Mantle A layer of hot rock is also part of the lithosphere

Core Center of the Earth) Inner core Outer core

Outer core Acts like a thick liquid

Inner Core dense ball of solid metal Heat source for convection Hotter than the sun Spins-creates earth’s magnetic shield

The Lithosphere Crust and uppermost mantle Floats on the asthenosphere Broken into pieces- tectonic plates

Crust Crust part of the (Lithosphere) Continental Less dense Oceanic More dense

Mantle Upper Mantle called the asthenosphere