Layers
Name the center most layer of Earth
Inner Core
What is the outer most layer of Earth?
Crust
Name one piece of evidence Alfred Wegner used for his theory of continental drift
Continents seem to fit together like a puzzle
Like species found on once matching boarders
Which scientist first theorized continental drift?
Alfred Wegner
This volcano benefit brings money to many areas.
True or False: The mantle is composed of semi-solid metals
False
True or False: The outer core is made of liquid metal
True
Describe the rate at which the plates move
Very slowly; centimeters per year
Name a US State Effected by continental drift
California, Oregon, Alaska, or Washington
This status of volcano is given when a volcano has not erupted for more than 10,000 years and scientists believe it will not erupt again
What is Extinct
What is the inner core made of?
Metals like iron and nickel
Which layer is responsible for Earth's magnetic field?
Outer Core
Name another piece of evidence for continental drift (not mentioned earlier)
Measurements prove continents are moving
Warm weather species found in Antarctica
True or False: When first proposed, Wegner's theory of continental drift was widely accepted by the scientific community
False
Mount Saint Helens is considered this type of volcano because it has explosive eruptions of mostly gas and ash
What is a composite volcano?
Describe the asthenosphere
Middle Mantle
Convection Currents
Jelly like
Plates sit on top
Name the densest layer of Earth
Inner Core
Name a future effect of continental drift
Alaska and Russia will collide
The Pacific Ocean is shrinking
The Atlantic Ocean is growing
Africa is rifting
The countries of Africa and __________________ seem to fit together like a puzzle.
South America
The majority of volcanoes form at this type of plate.
What are subduction plates
Which two layers make up the lithosphere?
Crust and upper mantle
Which layer takes up the most volume of Earth
Mantle
Where in the world could we find seafloor spreading?
Down the middle of the Atlantic Ocean
This was formed when India crashed into Asia millions of years ago
The Himalayan Mountains
Besides Hawaii, name another famous place with hot spot volcanoes.
What is Yellowstone or Easter Island
What was missing from Wegner's theory that others did not accept his theory
A. Continents seemed to fit together
B. That similar fossils were found on matching boarders
C. Wegner could not describe how continents moved
D. Wegner couldn't explain fossilized tropical plants in Arctic climates
C