Earth's layers

Question 1

Inner Core

Answer 1

Solid because of greater pressure, Metal: Fe and NI densest layer

Question 2

Outer Core

Answer 2

Liquid due to less pressure, Metal: Fe and NI, next densest layer

Question 3

Mantle

Answer 3

Thickest layer semi-solid

Question 4

Crust

Answer 4

Outmost layer, least dense, only place where life exist

Question 5

Lithosphere

Answer 5

Layer of solid rock including crust and upper mantle. Broken into plates.

Question 6

Asthenosphere

Answer 6

Layer of semi-solid rock. Moves plates above it

Question 7

Oceanic Crust

Answer 7

Dense layer of crust below ocean. Thinner, denser, younger

Question 8

Continental Crust

Answer 8

Thicker, less dense, older then oceanic crust

Question 9

Tectonic plates

Answer 9

Large and small slabs of rock that the lithosphere is made up of

Question 10

Continental Drift

Answer 10

The theory that all the continents where once together then split apart at some time

Question 11

Mid-ocean ridges

Answer 11

Underwater mountain ridges

Question 12

Convection

Answer 12

energy transfer by the movement of a material

Question 13

Convection current

Answer 13

A motion that transfers heat energy in a material

Question 14

Theory of plate tectonic

Answer 14

The theory state that Earth’s lithosphere is made up of huge plates that move over the Earth’s surface.

Question 15

Divergent boundary

Answer 15

Occurs when plates move apart. Most of them are found in the oceans

Question 16

Convergent boundary

Answer 16

Occurs then plates push together

Question 17

Transform boundary

Answer 17

Occurs when plates scrape past each other

Question 18

Rift valley

Answer 18

The space between a mid-ocean ridge

Question 19

Magnetic reversal

Answer 19

Switch in directions

Question 20

Hot spots

Answer 20

heated rock rises in plumes, or thin columns, called the mantle

Question 21

Subduction

Answer 21

When one plates sinks beneath another

Question 22

Continental-continenal collision

Answer 22

When two plates carrying continental crust push together

Question 23

oceanic-ocieanic subduction

Answer 23

occurs when one plate with oceanic curst dink, or subducts, under another plate with oceanic crust

Question 24

oceanic-continental subduction

Answer 24

occurs when ocean crust sinks under continental crust

Question 25

Convection currents

Answer 25

Convection currents are the transer of energy through motion.Rises when it’s hotwhen less dense.
Sinks when it’s cool when more dense.