plate tectonics

Question 1

Lithosphere

Answer 1

the rigid outer layer of the earth

Question 2

Asthenosphere

Answer 2

the plastic layer of the earth that lies beneath the lithosphere

Question 3

Mesosphere

Answer 3

above the stratosphere and below the thermosphere

Question 4

Inner Core

Answer 4

a dense layer of iron

Question 5

Outer Core

Answer 5

the liquid layer of the earth

Question 6

Seismic Waves

Answer 6

a wave caused by an earthquake

Question 7

Oceanic Crust

Answer 7

a part of the crust that s underneath the oceans that is denser than continental crust.

Question 8

Continental Crust

Answer 8

a part of the crust that is less dense than oceanic crust

Question 9

Density

Answer 9

mass divided by volume

Question 10

Alfred Wegener

Answer 10

the scientist that proposed the idea of continental drift

Question 11

Continental Drift

Answer 11

the theory that the continents are slowly moving

Question 12

Convergent Boundary

Answer 12

a type of boundary where two plates meet and start to push against each other pushing one down.

Question 13

Divergent Boundary

Answer 13

when plates move apart forming rift which then become rift valleys

Question 14

Transform Boundary

Answer 14

two plates sliding against each other

Question 15

Sea-floor Spreading

Answer 15

the formation of new areas in the oceanic crust

Question 16

Pangaea

Answer 16

the idea that all the continents were once one large continent that spread apart

Question 17

Laurasia

Answer 17

when pangaea split apart Laurasia was the large northern continent

Question 18

Gondwana

Answer 18

the largest piece of crust during the Paleozoic era

Question 19

Mesosaurus

Answer 19

an extinct species of reptile in the early Permian

Question 20

Glossopteris

Answer 20

the largest and most well known extinct seed ferns