U1
What is the most common indirect method to study the Earth's interior?
The most common is the seismic method
Which of the Earth's layers is solid?
crust, mantle, & inner core
What is the 1 super continent called?
pangaea
In convergent boundaries, in what way are the plates moving?
They are moving towards each other which means that one must slip under the other.
In which type of margin is the oceanic lithosphere created?
Divergent
What are the two main types of seismic waves?
Primary (P): Faster, longitudinal
Secondary (S): slower, transverse
Is the continental crust or oceanic crust thicker?
Continental crust is thicker
What is a subduction zone?
areas where one plate goes under another one and its materials are molten in the mantle.
True or False: When tectonic plates move in convergent boundaries, mountains are able to form but not volcanoes.
False; Mountains can form as well as volcanoes
trench
Do P-waves or S-waves vibrate parallel to the direction of propagation of wave?
P-waves
What are the three sources of Earth's internal heat?
residual heat, the mantle, and solidification of the core
What in the Earths mantle allows the plates to move?
convection currents
Is there subduction when two continental plates converge?
No subduction; its too thick
What does effusive mean in terms of volcanoes?
gentle eruption
S-waves
Where is the Earth's magnetic field produced?
It is produced in the liquid outer core
What are the three types of boundaries between tectonic plates?
- divergent or constructive
- convergent or destructive
- transform or conservative
Mountain ranges form when materials fold as two continental lithospheres collide. What is this called?
Called obduction
What two factors determine if a volcano will be violent or gentle?
Gas content & viscosity of lava
Are P-waves or S-waves more destructive?
S-waves
What does the Earth's magnetic field protect us from?
It protects us from solar winds (streams of protons, electrons, and helium nuclei)
In divergent plate margins, how do the plates move?
the plates move apart
True or False: Volcanoes form in transform plate boundaries
False
How are earthquakes caused?
Earthquakes are caused by the movement of tectonic plates