1. LAYERS OF THE EARTH

2. I owe Mom cash always.
Inner Core
Outer Core
Mantle
Crust
Atmosphere

3. EARTH’S CORE MADE OF NICKEL AND IRON
TWO PARTS-INNER CORE AND OUTER CORE

4. INNER CORE SOLID VERY DENSE TEMPERATURE OF 5,OOO DEGREES CELSIUS
RESPONSIBLE FOR MAGNETIC FIELD

6. OUTER CORE
LIQUID
TEMPERATURES RANGE FROM 2200 DEGREES CELSIUS TO 5000 DEGREES CELSIUS
THICKER THAN INNER CORE

8. SEISMIC WAVES The shock waves produced by an earthquake.
There are 2 types of Seismic waves.
P waves and S waves
See example of how they move on the computer.

9. HOW THE WAVES MOVE
P WAVES SLOW DOWN WHEN THEY GET TO THE OUTER CORE AND SPEED UP AGAIN.
S WAVES STOP WHEN THEY GET TO THE OUTER CORE.

10. SEISMOGRAPH Detects the presence of an earthquake.
Earthquakes typically happen near transform boundaries.

11. THE MANTLE MAKES UP 80% OF VOLUME AND 68% OF MASS
MADE OF SILICON, OXYGEN, IRON AND MAGNESIUM.
HAS PLASTICITY-THE ABILITY OF A SOLID TO FLOW LIKE A LIQUID.

13. MOHO BOUNDARY
PLACE WHERE THERE IS A CHANGE IN THE SPEED OF THE SEISMIC WAVES, INDICATING A CHANGE OF STATE.
BETWEEN CRUST AND MANTLE.

14. THE CRUST
THIN OUTERMOST LAYER OF THE EARTH.
MADE OF IGNEOUS, SEDIMENTARY, AND METAMORPHIC ROCKS

16. OCEANIC CRUST
LESS THAN 10 KILOMETERS THICK; AN AVERAGE OF 8 KM.
MADE OF BASALT
FOUND UNDER THE OCEANS

17. CONTINENTAL CRUST
BENEATH THE CONTINENTS
AVERAGE OF 32 KILOMETERS THICK
MADE OF GRANITE AND BASALT

18. LITHOSPHERE TOPMOST SOLID PART OF THE EARTH.
BROKEN INTO 7 SECTIONS CALLED LITHOSPHERIC PLATES
PLATES MOVE ON MOLTEN MATERIAL OF THE MANTLE