chapter 25

Question 1

Hess discovered the system of mountains ranges on the seafloor separated by valleys, which he called

Answer 1

mid-ocean ridge

Question 2

A long, narrow depression called a … forms in between peaks along the mid-ocean ridge.

Answer 2

rift valley

Question 3

the boundary where two plates collided is called

Answer 3

convergent plate boundary

Question 4

when a thick and buoyant continental plate meets a thin a dens oceanic plate, denser plate dives beneath the continent in in process called

Answer 4

Subduction

Question 5

the boundary between two plates that are moving apart is called

Answer 5

divergent plate boundary

Question 6

this type of boundary where plates slides horizontally past each other in opposite directions is called

Answer 6

transform plate boundary

Question 7

is the sudden movement or vibration of the ground that occurs when rocks slip and slips and slides along enormous cracks in the earths crust.

Answer 7

earthquake

Question 8

a… is a crack in earths crust along which rock has moved

Answer 8

fault

Question 9

this sudden release of strain energy as rock moves along a fault is called

Answer 9

elastic rebound

Question 10

the point of origin for an earthquake is called a

Answer 10

focus

Question 11

the point on Earths surface directly above the focus is called the

Answer 11

epicenter

Question 12

how divergent plate boundaries

Answer 12

they come apart

Question 13

what are two examples of divergent plate boundaries

Answer 13

mid ocean ridge (made oceanic crust)

East African rift (made up of two continental crusts)

Question 14

how do transform plates Boundaries

Answer 14

they slide by each other

Question 15

what is a specific example of a transform plate boundary

Answer 15

San andreas fault(two continental crusts

Question 16

how do convenience currents work

Answer 16

it heats up becomes less dense the rises

magma cools becomes more dense and goes down

Question 17

what are the other forces the helps with plate moment

Answer 17

slab pull
Ridge pushes
friction y7

Question 18

what two types of boundaries have shallow earthquakes

Answer 18

Divergent and trancfrom

Question 18

what two types of boundaries have shallow earthquakes

Answer 18

Divergent and trancfrom

Question 19

which boundary has deep earthquake

Answer 19

convergent

Question 20

what are the types of stress the could be applied to rocks

Answer 20

compression
a tension
a shear
torsion

Question 21

what are the two types of deformation

Answer 21

plastic and elastic

Question 22

what happens to a rock to a rock when when alas tic deformation happens

Answer 22

it renters to og shape

Question 23

what happens to a rock during plastic deformation happens

Answer 23

it deforms and stays in that shape

Question 24

what are seismic waves

Answer 24

primary Secretary surface

Question 25

witch type of seismic waves moves the fastest

Answer 25

primary

Question 26

how do primary waves move

Answer 26

there compression waves

Question 27

what type of materials do primary waves move throw

Answer 27

solids and liquids

Question 28

how secondary waves do waves move

Answer 28

they are transverse waves

Question 29

what type of meterail does secondary waves move throw

Answer 29

only solids

Question 30

witch types of waves is most complex and can do the most damage

Answer 30

surface waves

Question 31

what are the two scales used to help to measure earthquakes

Answer 31

richer scale | Mercalli scale

Question 32

what does the Richter scale tell us about earthquakes

Answer 32

amount of energy released