Layers of the Earth Flashcards
(28 cards)
1
Q
order the layers
A
crust, mantle: upper, transition, lower, d”, outer core, inner core
2
Q
the depth of 2900 km
A
mantle
3
Q
most less than 100 million years old
A
crust
4
Q
ocean or continental
A
crust
5
Q
convection
A
outer core
6
Q
Upper, Transition, Lower, & D”
A
Mantle
7
Q
thinner in ocean
A
crust
8
Q
solid or plasma(with density of a solid)
A
inner core
9
Q
basalt or granite
A
crust
10
Q
mostly iron
A
inner core
11
Q
high temperatures make it pliable
A
mantle
12
Q
dynamo theory
A
outer core
13
Q
thickest layer
A
mantle
14
Q
could be a single iron crystal
A
inner core
15
Q
solid but nearly liquid
A
mantle
16
Q
forms earth’s magnetic field
A
outer core
17
Q
liquid
A
outer core
18
Q
thicker on land
A
crust
19
Q
iron mixed with nickel
A
outer core
20
Q
5-70 km thick
A
crust
21
Q
solid rock
A
crust
22
Q
flows very slowly over long periods of time
A
mantle
23
Q
Planetary differentiation steps
A
order
24
Q
layers form
A
step 3
25
layers locked in position
step 6
26
planet cools over time
step 4
27
dense materials sink while less dense materials float
step 2
28
mass of planet is molten
step 1
