STRUCTURE OF THE EARTH Flashcards
1
Q
The Earth’s outermost layer, consisting of solid rock. It is relatively thin
compared to other layers, averaging about 5-70 kilometers in thickness.
A
CRUST
2
Q
Composed mainly of silicate minerals, including ________ in continental
crust and _________ in oceanic crust.
A
granite, basalt
3
Q
Located beneath the crust, the mantle extends to about 2,900 kilometers
deep. It is composed of semi-solid rock that flows slowly.
A
MANTLE
4
Q
Mantle mainly composed of silicate minerals rich in ________ and ________.
A
magnesium, iron
5
Q
A liquid layer about 2,200 kilometers thick that surrounds the inner core.
A
OUTER CORE
6
Q
Core composed primarily of ______ and _______.
A
iron, nickel
7
Q
The innermost layer of the Earth, solid and extremely hot (up to 5,700
degrees Celsius).
A
INNER CORE
