25.3&25.4 Flashcards
1
Q
what is the boundary that makes a density between layers
A
discountinuities
2
Q
how can discontunities be identified
A
by studying seismic waves
3
Q
what is the shadow zone
A
where seismic waves been recorded
4
Q
whats another term for shadow zone
A
dead zone
5
Q
what are the degrees from epic center
A
between 105 and 140 degrees
6
Q
what is the asthenosphere?
A
a plastic like layer wich plates move
