All about Layers
Models
Earth's Movement
Vocabulary
Plate Boundaries
100
What are the two models of Earth's layers?
Chemical / Compositional Model & Physical Model
100
#3
Core
100
The lithosphere is made up of ________________ that are constantly moving on top of the molten asthenosphere.
tectonic plates
100
Scientists believe that all land on earth used to be connected as one large supercontinent. What is it called?
Pangea
100
What are the 3 types of plate boundaries and how do they move?
Divergent - move away from each other
Convergent - move toward each other
Transform - move against one another
200
The core is made up of which two elements?
Iron and Nickel
200
#7 , #8
#7) Outer Core
#8) Inner Core
200
Who created the theory of continental drift?
Wegener
200
What are the 3 layers of Earth's Chemical / Compositional Model (in order from inner to outer)
Core, Mantle, Crust (oceanic and continental)
200
What are the two types of crusts found in the lithosphere?
Oceanic and continental
300
What are the two types of models of Earth’s Layers?
Physical and Chemical
300
#1 and #2
#1) Crust
#2) Mantle
300
What makes the tectonic plates of the lithosphere move on top of the Olsen asthenosphere?
convection (think boiling water)
300
What are the 5 layers of Earth's Physical model (from inner to outer)?
Inner core, outer core, mesosphere, asthenosphere, lithosphere
300
What landforms are created in each type of plate boundary?
Divergent - crust created, trench, ridge, mountain, volcanoes
Convergent - crust created for volcanos, crust destroyed for subduction, mountains, earthquakes, volcanoes
Transform - crust is not created or destroyed, just cracked, off set features, earthquakes
400
The lithosphere is made up of which TWO kinds of crust?
Oceanic: thinner and more dense, made of silicates
Continental: thicker and less dense, made of silicates
400
#6
#6) Mesosphere
400
What evidence in Wegener use to prove his theory of continental drift?
Organics (fossils, flora (plants))
Features (landmasses, mountains, same rock)
Coastlines (continents look like they fit together in puzzle pieces)
400
Earth’s Physical Layer model separates the different layers by ______________________
State of matter (solid, liquid, gas)
400
In which plate boundary does subduction occur? Explain subduction
Convergent plates - subduction is when the denser plate subducts or goes beneath the lighter plate. Crust is destroyed and volcanoes commonly form
500
What is the state of matter of the inner core?
What is the state of matter of the outer core?
Solid
Liquid
500
#4 and #5
#4) Lithosphere
#5) Asthenosphere
500
What new evidence was found in the mid-1900s that led to the theory of plate tectonics?
Sonar and Radar evidence of
-earthquakes
-sea floor spreading
-volcanoes
-elevation (mountains and ridges)
500
Earth’s Chemical Layer model separates the different layers by
what is it made up of (elements)
500
Identify which plate boundaries have the ability to create mountains, volcanoes, and earthquakes?
Mountains - divergent and convergent
Volcanoes - divergent and convergent
Earthquakes - transform, convergent, divergent (small ones)