Test 1 (Lectures 1-3) pt.2 Flashcards
What are the cardinal directions?
North, South, East, and West
What do magnetic needles do?
We can predict where certain rocks were at a certain time
What do magnetometers do?
They can map out pole reversals
There are ____ major plates
12
In passive regions, tectonic activity is not very _____
Active
What are the 3 types of plate boundaries?
Divergent, convergent, and transform
When two plates move past each other they are called ____
Divergent boundaries
When plates move toward each other they are called _____
Convergent boundaries
When plates slide past each other they are called ____
Transform boundaries
What boundary is the San Andreas fault?
Transform
_____ is the process of one plate moving under the other
Subduction
What causes one plate to move under the other?
When one plate is denser than the other it causes the plates to move under the other
What is the Wilson cycle?
The process of closing, opening, and closing up ocean basins
Where are the youngest rocks found in an ocean basin?
It’s the rocks that are the closest to the ocean basin
Where are the oldest rocks found in an ocean basin?
It’s the rocks that are the farthest away from the ocean basin
What causes a continent to drift apart?
The spreading of the ocean floor (rifting)
What is the epicenter?
The location of the surface where the earthquake has taken place
The deepest part of the ocean is…
Mariana’s trench
What following 5 conditions must be met in order to be classified as a mineral?
- Be naturally occurring
- Generally Inorganic (i.e. non-biologically produced)
- Solid
- Have a definable chemical composition composed of one or more elements
- The individual atoms have an orderly arrangement in a crystalline structure
Where is the largest copper mine found in the US?
Utah
What mineral is known as table salt?
Halite
When does solidification occur?
When molten rocks such as lava, cools and different minerals grow in succession
Our teeth is made up of _____
Apatite
