1
He developed the Theory of Continental Drift
Alfred Wegner
This layer of Earth is extremely hot and solid made up of nickle and iron.
What is the inner core.
The outer most layer of the earth.
What is the crust
Magma is found here.
What is the mantle.
Volcanoes produce this
What is lava.
They are pieces that move on Earth's crust.
tectonic plates.
Movement of tectonic plates cause what type of formations on Earth
Mountains, volcanoes, earthquakes, seafloor spreading, ridges, etc.
T or F: Tectonic plates and continents are the same.
False.
Tectonic plates make up the Earth's ______
crust.
T or F: Tectonic plates stay in a fixed position and don't move.
False.
Magma causes ______ ____________ to move.
Tectonic plates.
Earth's plates move ______ per year on average.
1 inch
Why do the plates move?
The Earth’s plates are floating on a liquid called magma, which is moving because of heat.
This was a supercontinent
Pangea
What is a fossil?
the remains or impression of a prehistoric organism preserved in petrified form or as a mold or cast in rock
Explain the theory of continental drift.
The continents were once a supercontinent and due to the movement of plate tectonics shifting because of the magma in the mantle they spread apart into what we know today.
Explain the differences between continents and plate tectonics.
A continent is one of very several large land masses on earth. Plates are part of earth's crust that is divided into several hard and rigid plates that glide past each other.
List 4 pieces of evidence that supports the theory of continental drift.
1. Continents fit together like a puzzel.
2. Fossil evidence matched on each continent.
3. Landforms like rivers and moutnain ranges matched on continents.
4. Glacier evidence was found in places glaciers should have never been found.
All of the following are true about plate tectonics except:
a.plates move more slowly on top of the mantle.
b.earthquakes and mountains are created from plate movement.
c.plates are fixed in place and do not move.
Plates are fixed in place and do not move.