unit 3 lesson1 Flashcards
1
Q
describe sources of energy in earths interior
A
radioactive decay
collision
gravitational potential energy
2
Q
what is the crust made of
A
oxygen silicon and aluminum
3
Q
what is the mantle made of
A
more magnesium less aluminumm and silicon than the crust
4
Q
what is the core made of
A
iron and nickle
5
Q
what are the compositional layers of eart
A
core, mantle, crust
6
Q
what are Earth’s physical layers
A
lithosphere
asthenosphere
mesosphere
outer core
inner core
