Earth science 20 week exam Flashcards
1
Q
how does the nearness to a sea floor spreading center indicate the age of sea floor rock
A
the close the rock is the the trench the newer it will be
2
Q
when did trilobites exist, when did coral exist
A
early Cambrian and middle Ordovician
3
Q
difference between continental and oceanic crust
A
continental think oceanic dense
4
Q
Hawaii was a result of
A
sea floor spreading
5
Q
how long is a half life
A
5,700 yrs
6
Q
what is a gnomon
A
it is a Foucault pendulum(pulled towards gravity)
7
Q
what is the coriolis effect and what does it show
A
on the esrt on the north side curves right the south side curves left
