Science Test- Layers of the earth

Question 1

crust

Answer 1

Thinnest, Most on top, and made out of lightest elements.

Question 2

mantel

Answer 2

medium level elements more dense than crust. mantel is in the middle and thickest layers

Question 3

core

Answer 3

Much more dense than mantel. Full of dense IRON Nickle and other heavy elements.
Produces a magnetic field that protects the earth from ions from the sun.

Question 4

why does formation of earth spread out

Answer 4

At formation of earth the different densities separated out. Because of GRAVITY!!!!!
planetary differentiation

Question 5

lithosphere

Answer 5

Outer most layer- solid, Crust and upper level of mantel. Seems to float on bottom layers and move around.

Question 6

athenoshpere

Answer 6

solid but more liquid properties. Hotter than lithosphere.

Question 7

mesosphere

Answer 7

silly putty consistence where convection currents move around inside the earth

Question 8

outer core(mechanical)

Answer 8

liquid very hot mostly metallic.

Question 9

inner core(mechanical)

Answer 9

even hotter but solid (under high pressure so it stays a solid)

Question 10

Convection currents take place in the Mantel

Answer 10

Convection currents bring up hot material from deep inside the earth and bring them into contact with the lithosphere. Causes volcanoes and motion in the lithosphere.

Question 11

oceanic

Answer 11

denser, thinner, younger, usually covered in water.

Question 12

contiental

Answer 12

Thicker, less dense, older, usually land.

Question 13

Convergent boundaries

Answer 13

plates coming together.

Question 14

continental and continental

Answer 14

big high mountain chains are formed.

Question 15

oceanic and oceanic

Answer 15

mountains form (usually underwater) new crust fills in the gaps.

Question 16

continental and oceanic(for o)

Answer 16

one plate is pushed under forms deep trench and volcanoes form further in the plate.

Question 17

continental and oceanic(for c)

Answer 17

mountains form (usually underwater) new crust fills in the gaps.

Question 18

continental and continental(divergent)

Answer 18

rifts form (valleys) new crust can fill in those gaps.

Question 19

divergent boundaries

Answer 19

moving apart

Question 20

transformative

Answer 20

sliding past each other. No new land forms but lots of earth quakes.

Question 21

magnetic stripping

Answer 21

Because the earths magnetic poles are switching periodically. The rocks that form from divergent plates trap that magnetic signature in them. In alternating patterns with the center being the mid- Atlantic ridge.