Layers of the Earth Continental Drift Sea-Floor Spreading Plate Tectonics Faults & Folds Misc. $ 200 $ 200$200 $ 200 $ 200 $400 $ 400$400 $ 400$400.
Dec 28, 2015
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Layers of the Earth
Continental Drift
Sea-Floor Spreading
Plate Tectonics
Faults & Folds
Misc.
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$200
Crust & Upper Mantle
The lithosphere is made up of what two parts of the Earth?
$400
Iron
The core is made up of mainly this element.
$600
Asthenosphere
What does the lithosphere float on
top of?
$800
It contains more iron and magnesium
Why is the mantle more dense than the
crust?
$1000
Lithosphere, Asthenosphere, Mesosphere, Outer Core, Inner Core
Name the 5 layers of Earth from the surface to the center (based on physical structure)
$200
Alfred Wegener
What scientist first came up with the idea of Continental Drift?
$400
Pangaea
250 MYA there was a super-continent on the Earth called
what?
$600
Because there was no mechanism for movement
Why was the theory rejected at first?
$800Puzzle pieces, similar rocks on coast,
similar fossils on coasts, changing climate
What 4 pieces of evidence did Wegener have to support
his theory?
$1000
Laurasia & Gondwana
When Pangaea broke up it formed what two continents?
$200
Mid-ocean ridges
Where does sea-floor spreading take place?
$400
Magnetic minerals on the ocean floor
What is the evidence for sea-floor spreading?
$600
When the magnetic poles change places
What is a magnetic reversal?
$800
Centimeters
What units would you use to measure the rate of sea-floor
spreading?
$1000Molten rock contains metal minerals that will align with the Earth’s magnetic field, then cool and stay as a record of that time
How is a record of magnetic reversals recorded at mid-ocean ridges?
$200
Oceanic & Continental
What are the two types of tectonic plates?
$400
Convergent, Divergent, Transform
What are the three types of plate boundaries?
$600Because the atoms move farther away, making it less dense that the surrounding rock
Why does hot rock rise?
$800
Because oceanic lithosphere is more dense than continental lithoshpere
Why does an oceanic plate subduct below a continental
plate?
$1000
Ridge push & Slab pull
Other than convection, what are two possible causes of
tectonic plate motion?
$200
Normal, Reverse (Thrust), &
Strike-Slip
What are the 3 types of faults?
$400
Reverse or Thrust Fault
In what type of fault does the hanging wall move up
relative to the footwall?
$600
Normal Fault
What type of fault occurs because of tension?
$800
Left=footwall, Right=hanging wall
Look at the fault above, which block is the footwall? Which is the hanging wall?
$1000
Anticline
What type of fold is shown below?
QuickTime™ and a decompressor
are needed to see this picture.
$200
Black
What color shirt did Mrs. Harper wear yesterday?
$400
earthquakes
What unit are we going to start on Thursday?
$600
Masquerade
What was the theme of the Junior High dance last
Friday?
$800
Black lab mutt
What kind of dog do I have?
$1000
Columbus Crew
Who is Mrs. Harper’s favorite soccer team?
Daily Double
Laurasia & Gondwana
When Pangaea broke up it formed what two continents?
The Jeopardy champion!
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