Plate tectonics

Question 1

what are the earths layers in order (top to bottom)

Answer 1

atmosphere,crust,mantle,outer core,inner core

Question 2

what gases surround the earth

Answer 2

atosphere

Question 3

what layer do we live on

Answer 3

crust

Question 4

water layer

Answer 4

hydrosphere

Question 5

rock solid layer(oceanic and continental)

Answer 5

lithosphere

Question 6

what crust is thinner and has a higher density

Answer 6

ocean

Question 7

what crust is thicker and has a lower density

Answer 7

continental

Question 8

where convection currents

Answer 8

mantle

Question 9

soft bendable(aka plastic mantle)

Answer 9

asthenosphere

Question 10

largest layer of the earth

Answer 10

stiffer mantle

Question 11

what has 2 parts

Answer 11

core

Question 12

liquid layer

Answer 12

outer

Question 13

solid metal ball that spins

Answer 13

inner

Question 14

as depth increases(temp)

Answer 14

the temperature increase(direct relationship)

Question 15

as depth increase(density

Answer 15

density increases direct relationship

Question 16

as depth increases(pressure)

Answer 16

pressure increase direct relationship

Question 17

what is a tectnoic plate

Answer 17

are large sections of earths lithosphere copsoed both coteintal and oceanic crust that move slowly over time due tCONVECTION CURRENTS in the ASTHEOSPHERE

Question 18

divergent boundary

Answer 18

plates movie diff directions
new crust is created at this type of plate boundary

Question 19

two ……..pulley away from eathother to form a

Answer 19

oceanic plate…ridge

Question 20

the name given to this process is ..(when oceanic plates pull away to form a ridge)

Answer 20

sea floor spreading

Question 21

two……….diverge a……is formed

Answer 21

conteinetal plate and rift vallety

Question 22

crust is moved and shifted it can crumble but no new crust is created or destroyed

Answer 22

created earthquakes
also known in Us is San Andreas Fault

Question 23

Convergent boundary

Answer 23

plates movie towards each other

Question 24

oceanic and continental plates have

Answer 24

different densities

Question 25

oceanic plate has a

Answer 25

higher denisty

Question 26

conteinal plate has a

Answer 26

lower density

Question 27

....is more dense so it goes under...which less dense plate ....this is called

Answer 27

Ocean Plate...continental plates....subduction (crust can be destroyed at these boundaire)

Question 28

oceanic plate collides with continental plate

Answer 28

subduction occurs and volcanos and trenches are formed

Question 29

when 2.....converge a....is created because these plates have the ...desnites

Answer 29

oceanic plates..trench..same

Question 30

what is convection current

Answer 30

convection is a form of heat transfer in liquids and gases

Question 31

hotter....materials will rise while cooler ...material will sink

Answer 31

less dense...more dense (this happens in the asthenosphere/upper mantle)

Question 32

The plates that make up the…float and…on the mantle due to … how land is This theory explain how land is …..and….

Answer 32

Crust,move,convection currents Created and destroyed

Question 33

Continental drift

Answer 33

Gives edicvnce that the conteniets were going together But does NOT explain how they form Leads to the theory of plate tectonic

Question 34

Theory of plate tectonics

Answer 34

Explains how the plates move on the crust by convection current Gives evidence that land is being destroyed and created

Question 35

What is a earthquake

Answer 35

A violent shaking that results from the movement of TECTONIC PLATES beneath earths surface

Question 36

Epicenter

Answer 36

Is the point of earths surface directly above where the earthquakes occurred

Question 37

Focus

Answer 37

Is the point beneath earths surface where the plates move causing the earthquake

Question 38

Seismic waves

Answer 38

Are the vibrations caused by the plate movement tht travel through earths layer carrying the energy RELASED during the earthquake

Question 39

Primary wave

Answer 39

Expand and contract like an accordion Travels the FASTES arrives FIRST Can travel through LIQUID SOLIDS AND GASES

Question 40

Secondary wave

Answer 40

Vibrate side to side Travels slower Second to arrive Does the MOST damage CANNOT TRAVEL THROUGH LIQUIDS

Question 41

Surface wave

Answer 41

form when P and S waves combine Move the SLOWEST OUT OF THE SLOWEST cause the most serve shaking

Question 42

Seismograph

Answer 42

Records ground by seismic waves

Question 43

Richter

Answer 43

Based on size of seismic wave

Question 44

Mercalli

Answer 44

Based on the intensity and damage done (used before richter was made)

Question 45

Moment Magnitude

Answer 45

Based on total energy RELASED (newest and most accurate scale)

Question 46

Layers of the earth are ….(not wht there called)

Answer 46

Are inferred becuz of the info the seismic wave collected

Question 47

Liquidfacion

Answer 47

Which occurs when shaking turns loose soil into mud trigging a landslide