THE INTERNAL STRUCTURE: ROCK BEHAVIOR AND SEAFLOOR SPREADING

Question 1

Is the force that pushed and pulled plates that acts on the rocks which create different behavior or characteristics

Answer 1

geological stress

Question 2

Rocks responds to stress by deforming elastically

Answer 2

elastic deformation

Question 3

2 kinds of elastic deformation:

Answer 3

ductile deformation
brittle deformation

Question 4

it either flows

Answer 4

ductile deformation

Question 5

It fractures in

Answer 5

brittle deformation

Question 6

is the process by which the crust is deformed along tectonic plate margins.

Answer 6

DEFORMATION

Question 7

produces a variety of geologic structures such as folds and faults, joints and foliation.

Answer 7

DEFORMATION

Question 8

a bend in rock that is response to compressional force. It can be linked to the waves in the ocean

Answer 8

Folding of the crust

Question 9

most visible in rocks that contained layering

Answer 9

Folding of the crust

Question 10

a convex up fold in rock that resembles an arch like structure with the rocks beds (or limbs) dipping away from center of the structure.

Answer 10

Anticline

Question 11

the rock layers are warped downward

Answer 11

Syncline

Question 12

when the stress overcome the internal strength of the rock resulting in a fracture.

Answer 12

Faulting of the crust

Question 13

Faulting of the crust is the __________ of once connected blocks of rocks along a fault plane.

Answer 13

displacement

Question 14

is a geologic process in which tectonic plates split apart from each other as a result of mantle convection.

Answer 14

SEAFLOOR SPREADING

Question 15

is the slow, churning motion of the earth’s mantle.

Answer 15

Mantle Convection

Question 16

currents carry heat from the lower mantle and core to the lithosphere

Answer 16

Convection

Question 17

a German geophysicist, and meteorologist
he theorized that all of Earth’s continents had once existed as a single land mass

Answer 17

ALFRED WEGENER

Question 18

continent of single land mass

Answer 18

pangea

Question 19

between 275 and 175 million years ago Pangaea began to separate.

Answer 19

between 275 and 175 million years ago Pangaea began to separate.

Question 20

a professor of geology and former US Navy

Answer 20

HARRY HESS

Question 21

Used SONAR (also called echo sounding)

Answer 21

HARRY HESS

Question 22

Hess believed that ocean trenches were the locations where the ocean floor was _______ and _____

Answer 22

destroyed and recycled

Question 23

books made by harry hess

Answer 23

The History of Ocean Basins’ in 1962 & ‘Sea Floor Spreading’

Question 24

3 Evidence for seafloor spreading

Answer 24

Molten material
Magnetic stripes
Drilling samples

Question 25

rocks showed that molten material had erupted many different times from cracks along the mid-ocean ridge

Answer 25

Molten material

Question 26

rocks on the ocean floor are in pattern of magnetized “stripes”. These stripes show when the Earth reversed it’s magnetic field. (molten materials contain iron)

Answer 26

Magnetic stripes

Question 27

Theyy studied the age of the rocks sampled. They found out thet the farther from the ridge, the older the rock. Youngest rocks were at the center of the ridge

Answer 27

Drilling samples