Download ES9 Gutierrez 31Aug16

Earth’s Crust
By:Flavio Gutierrez IV
blogs.agu.org
Earth’s layers (CK-12 2016)
• Crust
• Mantle
• Core
easyscienceforkids.com
Earth’s crust
• Solid rocks and minerals
(CK-12 2016)
• Cold, thin, brittle outer
shell
(National Geographic 2016)
partofwizamta.files.wordpress.com
How was the crust formed?
(National Geographic 2016)
Hot, viscous ball of rock
Fe, Ni sank in the center
CORE
Molten material surrounding the core
MANTLE
How was the crust formed?
(National Geographic 2016)
“outgassing” happened
Mantle solidified
Materials that stayed in the liquid phase
(incompatible elements)
CRUST
What is the crust made of?
(National Geographic 2016)
Composed of different rocks:
1. Igneous - most abundant
- cooling of magma
- e.g. Granite & basalt
2. Metamorphic - Drastic changes due
to heat and pressure
- e.g. Slate & marble
3. Sedimentary - accumulation of Earth’s surface
materials
- e.g. Sandstone & shale
Crust is divided into 2:
earthquake.usgs.gov
Oceanic crust(National Geographic 2016)
• 5-10 kms
• Silicate and magnesium
• Formed at mid ocean
ridges where tectonic
plates are tearing apart
from each other
cloudfront.net
Oceanic crust
(National Geographic 2016)
• Composed of magma
that erupts on the sea
floor
• Thin and lies above the
mantle
• Sediments is thickest
near the shore
livescience.com
Continental crust
(National Geographic 2016)
•
•
•
•
physast.uga.edu
Plate tectonics
mountain-building
Silicates and aluminum
Different types of
granites
Continental Crust
(National Geographic 2016)
• OLDER than oceanic
crust
• Rarely destroyed and
recycled
• OLD as Earth itself
easyscienceforkids.com
Extraterrestrial crust
(National Geographic 2016)
• Other planets in the universe have their own
crust (Mercury, Venus, Mars even the Moon)
• Moon’s crust is thicker than Earth’s crust
• Crust of Mars features the tallest mountains in
the solar system
Sources
•
•
Words
• Desonie, D. “Earth’s Crust.” CK-12. CK-12 Foundation. 16 August 2016. 18 August 2016.
<http://www.ck12.org/earth-science/Earths-Crust/lesson/Earths-Crust-HS-ES/?
referrer=concept_details>.
•
Sue, C. “Crust.” National Geographic. National Geographic Society. 29 May 2015. 18 August
2016. <http://nationalgeographic.org/encyclopedia/crust/> .
Images
– http://eqseis.geosc.psu.edu/~cammon/HTML/Classes/IntroQuakes/Notes/Images_specific/plates.gif
– http://blogs.agu.org/geospace/files/2012/06/crack-under-construction.jpg
– https://d1o50x50snmhul.cloudfront.net/wp-content/uploads/2016/08/15155912/e655rf.jpg
– http://easyscienceforkids.com/wp-content/uploads/2014/03/Science-for-Kids-Website-All-aboutEarths-Crust-Layers-of-the-Earth-image.jpg
– http://easyscienceforkids.com/wp-content/uploads/2014/02/Fun-Geography-for-Kids-on-the-EarthsCrust-Continental-Crust-Image.jpg
– ://earthquake.usgs.gov/learn/glossary/images/CRUST.JPG
– http://www.livescience.com/images/i/000/057/369/original/sandy-C-bottom-130927.jpg?
interpolation=lanczos-none&fit=inside%7C660:*
– https://partofwizamta.files.wordpress.com/2014/11/plate-tectonics-vulcanism.jpg
– http://www.physast.uga.edu/~rls/1010/ch9/ch9_38.jpg