Transcript THE EARTH*S LAYERS

THE EARTH’S LAYERS
BY: QUETIARA C. PASCUAL
(www.universetoday.com)
WHAT IS BELOW OUR FEET?
• Crust
• Mantle
• Inner Core
• Outer Core
)
(www.ck12.org
(http://www.ck12.org)
HOW DID THE EARTH’S LAYERS FORM?
(Adams,2016)
• As the earth started to cool, the layers began to
form due to density differences.
• The densest (or heaviest) materials went to the
center of the earth.
(https://i.ytimg.com)
DIVISIONS BASED COMPOSITION(Desonie,2016)
• The crust is less than 1% of Earth by mass. The two
types are continental crust and oceanic crust.
• The mantle is hot, ultramafic rock. It represents about
68% of Earth's mass.
• The core is mostly iron metal. The core makes up
about 31% of the Earth.
THE EARTH’S INTERIOR
(http://www.the-science-site.com/images/pe10-earth-interior-nasa.jpg)
CLUES ABOUT EARTH’S INTERIOR(Desonie,2016)
• Earth’s overall density is higher than the
density of crustal rocks.
• Since Earth has a magnetic field, there must be
metal within the planet.
• Meteorites are the remains of the material
that formed the early solar system and are
thought to be similar to material in Earth’s
interior.
Learning about Earth’s Interior(Desonie,2016)
Seismic Waves
• Earthquake waves
• Go different speeds through different material
Meteorites
• Formed in the early solar system
• Very similar to Earth’s Core
(www.ck12.org)
Image References
• (http://www.ck12.org/earth-science/Earths-Layers/lesson/EarthsLayers-HS-ES/?referrer=featured_content)
• https://i.ytimg.com/vi/NAHY6965o08/maxresdefault.jpg
• http://www.livescience.com/53156-earths-mantle-recreatedmicrowave-oven.html
• (http://www.the-science-site.com/images/pe10-earth-interiornasa.jpg
• http://www.universetoday.com/wpcontent/uploads/2008/05/Earths-layers.jpg
Text Reference
Adams,Jenna. “How did the earth layers form ? Did they
form when the earth was still a fireball or when it was
cooling down?”. scienceline.ucsb.edu.National Science
Foundation and UCSB School-University
Partnerships.2015.August 18
2016.http://scienceline.ucsb.edu/getkey.php?key=7
Desonie, Dana.”Earth’s Layers”.CK-12. CK-12
Foundation2016.2016.August 18
2016.<http://www.ck12.org/earth-science/EarthsLayers/lesson/Earths-Layers-HSES/?referrer=featured_content>
Ghose,Tia.” Microwavable Mantle: Physicists Nuke Mock
Earth Layer, for Science”.Live Science.Purch.com.2016.August 18
2016.http://www.livescience.com/53156-earths-mantlerecreated-microwave-oven.html
Video Reference
https://www.youtube.com/watch?v=N9ncfAsmiSg