Show:
Layers of the Earth
Tectonic Plates
Plate Movement
Catastrophic Events
Random (Difficult)
100
What is the outermost layer of the Earth?
The crust.
100
Plates are always what?
Moving
100
How many major types of plate movement are there?
Three
100
What type of plate movement causes earthquakes?
transform or plates grinding past one another
100
Silly putty is used to describe what section of Earth?
The partially molten section of the mantle
200
What causes the two sections of the mantle?
Heat
200
The United States is part of what plate?
North American Plate
200
What occurs at divergent plate boundaries?
Two plates move away from each other
200
What is the name for extremely large and damaging waves that can be caused by plate movement?
tsunamis
200
The Earth's core is larger than what planet?
Mars
300
What is found at the center of the planet?
The two layers of the core
300
About how many major plates are there?
A dozen
300
What occurs at convergent plate boundaries?
Two plates collide with one another
300
Where do many geological events occur in regards to plate tectonics?
At the boundary between plates
300
Why are most divergent plate boundaries not as well known?
They lie deep beneath oceans
400
Tectonic plates float on what?
The partially molten section of the mantle.
400
The slowest plates travel less than how many inches per year?
1 inch
400
What occurs at transform plate boundaries?
Two plates grind past each other side by side
400
Name 3 catastrophic events that result because of plate movement.
Earthquakes Volcanic eruptions Tsunamis
400
What happens at convergent plate boundaries depends mostly on what?
What the two plates are made of
500
tectonic plates are made up of what two sections?
Crust and the solid portion of the mantle.
500
The fastest plates travel how many inches per year?
6 inches
500
Why does almost all of the Earth's new crust form at divergent boundaries?
As the two plates move away from each other, magma rises from the mantle then cools.
500
What famous fault is responsible for many of California's earthquakes?
San Andreas fault
500
What type of plate movement caused the formation of the Himalayas?
Convergent