4. Flashcards
1
Q
The _____ is made up of LIQUID iron and nickel.
A
outer core
2
Q
The _____ is made up of SOLID iron and nickel.
A
inner core
3
Q
Which Earth layer is most dense?
A
Inner core
4
Q
Earth’s lithosphere is broken up into piece called
A
tectonic plates
5
Q
These pieces move around the surface of Earth due to the ____________ ____________ in the asthenosphere.
A
convection currents
6
Q
The flowing movement of the asthenosphere is mainly caused by _______ __________.
A
density differences
7
Q
These currents flow because the material is heated from the ______.
A
core
8
Q
Heated material rises because it is _____ dense.
A
less
