A number of rigid, but moving, pieces of Earth's outer layer.
What are tectonic plates?
7
What is the African Plate?
The most common geologic event for all the types of plate boundaries
What are earthquakes?
Earthquakes and volcanoes are usually located in relation to these
What are plate boundaries?
The area around the Pacific Ocean where 75% of the active volcanoes are found.
What is the Ring of Fire?
What is a transform boundary?
1
What is the North American Plate?
This type of boundary is where we see mountain ranges form.
What is a convergent boundary?
The Himalayan mountains are the result of this type of boundary.
What is a convergent boundary?
The San Andreas Fault in California is an example of this type of boundary.
What is a transform boundary?
The theory that all continents are fragments of Pangaea and now drifting apart
What is the Theory of Plate Tectonics?
11
What is the Australian Plate?
This type of boundary is where we see mid-ocean ridges form
What is a divergent boundary?
The Earth's crust is neither created nor destroyed in this type of boundary.
The scientist who created the Theory of Plate Tectonics
Who is Alfred Wegener?
The concept that the youngest rocks are found at divergent boundaries along the ocean floor and move away from the ridge as they get older.
What is seafloor spreading?
12
What is the Philippine Plate?
Cracks in the Earth's surface near transform boundaries are also known as this
What are fault lines?
The mechanism that causes the plates to move
What are convection currents?
The plates are still moving by this amount per year
What is a few centimeters?
A change to the structure of the Earth by tectonic activities
What is a geologic event?
3
What is the Nazca Plate?
Islands that are not along boundaries, such as Hawaii, are usually made due to this
What is a hot spot?
This type of crust is more likely to go through subduction.
What is oceanic crust?
One of the two pieces of evidence used to prove the existence of tectonic plates
(Choose one) What are fossils or puzzle-like continents?