Alfred Wegener
Who proposed the theory of Continental Drift?
Alfred Wegener
Which layer do we live on?
The crust.
Define an earthquake.
What is does P mean, in P wave?
Primary wave.
Which type of boundary is sometimes called a slip and slide boundary?
Transform boundary
What does the continental drift do?
It causes the seafloor to spread.
How many layers are on Earth?
Four layers.
How do we measure the strength of an earthquake?
We use magnitude.
What is faster P waves or S waves?
P waves.
What type of plate boundary creates mid-ocean ridges?
Transform boundaries.
Why was Alfred Wegener's theory ridiculed?
He had no explanation for what he had said.
What is the topmost layer of Earth?
The crust.
Can man-made explosions cause an earthquake?
Yes, it can because it is also a major release of energy.
Which wave has a higher frequency between body and surface waves?
The body waves have a higher frequency.
Which type of boundary creates many igneous rocks?
Divergent Plate boundary.
When did Alfred Wegener propose the theory of continental drift?
In 1912
What layer has the most area?
The mantle.
What is the place where the earthquake actually starts?
The focus.
What are the two types of surface waves?
Love and Rayleigh waves.
What are the three types of convergent boundaries?
continent to ocean; ocean to ocean; continent to continent.
When was Alfred Wegener born?
November 1, 1880
What is the most abundant metal in the core?
Iron
What is the highest ever recorded magnitude for an earthquake?
9.5 magnitude.
In which way do Rayleigh-Waves move the ground?
up and down and side-to-side.
What type of boundary is between the Caribbean and North American plates?
It is a transform boundary.