Layers
Fossils
Boundaries
Plate Tectonics
Boundaries II
100
The inner core is ______ while the outer core is _______.
Solid; liquid
100
Older fossils are found on the _______ of rock layers whereas younger fossils are found on the ___ of rock layers.
bottom; top
100
Oceanic crust is _____ dense than continental crust.
More
100
Heated fluid is ____ dense than cooler fluid.
less
100
The ____ of Fire is an area in the Pacific Ocean where Volcanoes and Earthquakes are the most abundant.
Ring
200
Convection Currents flow through the __________.
Asthenosphere
200
Why would you find tropical plant fossils in Alaska?
Alaska's climate must have changed over time as it drifted.
200
Mt. Everest is found on a _________ boundary.
Convergent
200
___________ powers plate tectonics.
Convection Currents
200
Which boundary type is shown above?
Convergent
300
Temperature and pressure _________ as you move towards the core.
Increase
300
Why would there be a wider variety of fossils in rock layer 2?
The climate must have changed to support more growth of different plants.
300
Earthquakes are commonly found at ________ boundaries.
Transform
300
Heat from the core radiates outward, causing the mantle to have _________ _________.
Convection currents
300
What landform is created when an oceanic plate and continental plate converge?
Trench
400
The only liquid layer of the Earth is the _________.
Outer core
400
Based on fossil evidence, scientists can prove that Earth has changed over time. How would you find a fossil of a prehistoric fish on top of a mountain?
Areas of land that had once been covered in water are now mountains.
400
3 types of boundaries are:
Convergent, Divergent, Transform
400
The hypothesis that the Earth's crust is moving is called _________.
Theory of Continental Drift
400
What landform is created when two continental plates diverge?
Rift Valley
500
Name the layers of the earth from outermost to innermost.
Crust, Mantle (Lithosphere, Asthenosphere, Mesosphere), Core (outer, inner)
500
How do fossil remains help support Wegener's Theory of Continental Drift?
Similar fossils found on far apart landmasses suggest that the continents were once a single landmass.
500
New crust is created at oceanic ridges, but old crust is destroyed at the _______ zone.
Subduction
500
Heated particles move quickly and _____ _____.
Spread apart
500
What landform is created when two oceanic plates diverge?
Oceanic Ridges