Chapter 25.3 Flashcards
What is the boundary that marks the density change of layers?
Discontinuity
How can discontinuity identified?
They can be identified by studying seismic waves.
What are shadow zones?
Areas where no seismic waves are recorded.
What is another term for shadow zones?
Another term is dead zones.
What is the degree ranges where shadow zones are located?
105 to 140 degrees from the epicenter.
Is the outer core a solid or a liquid?
Liquid.
Why is the inner core a liquid?
The inner core is a liquid because how much pressure is on it.
What makes up the lithosphere?
The lithosphere the crust and the uppermost mantle.
What is the asthenosphere?
A plastic like layer which earth’s plates move.
Which elements make up the mantle?
The mantle is composed of silicates and elements like calcium aluminum iron and magnesium.
What makes up the core?
Iron and nickel.
