Topagraphy
The closer together the lines are the ______ the slope is?
What is steeper.
Who was the Scientist that created the theory of Pangea?
Who is Alfred Wegner
Which type of boundry has two plates sliding past eachother?
What is a transform boundy
What is the average movement of plates per year?
what is 2-10cm per year.
Who created the idea of seafloor spreading?
Who is Harry Hess.
What is the distance above sea level called?
What is elevation.
He proved that all of the continents used to fit like a ____?
How are trenches created?
What is a subduction zone.
The Earth's lithosphere is divided into _____ large and small tectonic plates?
What is several
How are these found on the ocean floor?
What is mapping the ocean floor with sonar waves
What is a map of a three dimensional surface on a piece of paper?
What is a topography map.
What are some signs of evidence that Alfred Wegener used to prove his theory?
What are fossil structures, rock strata, and plants.
What are the three types of plate boundries?
What are divergent, convergent, and transform boundries.
The theory proposes the idea that the earth's shell consists of _______ ______ that interact?
what are individual plates.
Where are the youngest rocks found?
what is along the mid-Atlantic ridge.
Which way does the "V" point when a contour line crosses a river or stream?
About how many years ago did Pangea start to break apart?
what is 200-250 million years ago.
Which type of boundry occurs along spreading centers where plates are moving apart and new crust is created?
What is a divergent boundry.
When individual plates interact what is one land feature they create?
what are mountains, volcanoes, earthquakes or the crust.
Sea floor spreading is the idea new seafloor is produced between two ______ plates?
What is a diverging plate.
Depression counters indicate the elevation _______?
What is decreasing.
In what year did Alfred Wegner suggest the idea of Pangea?
What is 1912
What type of boundry would cause volcanoes to form?
What is a convergent boundry.
The plate tectonic theory combines the idea of ______ and ______?
What are continental drift and seafloor spreading.
What year was the idea of seafloor spreading created?
What is 1960.