Physical Science chapter 25.3-25.4 Flashcards
1
Q
What is the boundary that marks a density change between layers?
A
Discontinuity
2
Q
How are discontinuities identified?
A
By using Seismic waves
3
Q
What is a shadow zone?
A
Where no Seismic waves have been recorded
4
Q
What is another term for a Shadow Zone
A
Dead zone
5
Q
What are the degrees that Shadow Zones fall in-between
A
105 degrees - 140 degrees
6
Q
Is the outer core a solid or a liquid?
A
Liquid
7
Q
Is the inner core a solid or a liquid? Why?
A
A solid because of all the pressure
8
Q
What makes up the lithosphere?
A
The crust in the uppermost mantle
9
Q
What is the asthenosphere?
A
A weaker, plastic like layer
10
Q
Which elements make up the mantle?
A
Calcium, Aluminum, Iron, and magnesium
11
Q
Which elements makes up the core?
A
Iron and nickel
