Chapter 5 -Deformation of crust

Question 1

tension

Answer 1

stress that pulls rocks apart

-makes rocks thiner

Question 2

compression

Answer 2

crustal rocks squeeze together

-reduces volume pushes rock up or into crust

Question 3

strain

Answer 3

a change in shape or volume of ricks coming from the stress of being squeezed twisted or pulled apart

Question 4

isostatic adjustments

Answer 4

the up-and-down movements of the crust of reach isostocy

Question 5

stress

Answer 5

a force that causes pressure in the rocks of the crust

Question 6

3 examples of isostatic adjustments <>________ <>________ <>_________

Answer 6

mountains erode
rivers into oceans
glaciers

Question 7

isostasy

Answer 7

Balancing of two opposing forces on earth’s crust

Question 8

Shearing

Answer 8

pushes rocks in opposite direction.

-sheared rock bending twist or break apart

Question 9

Deformation

Answer 9

the bending tilting and breathing to earth’s crust

Question 10

syncline

Answer 10

down curved folds

Question 11

anticline

Answer 11

up curved folds in the layers

Question 12

folding

Answer 12

rock responds to stress by becoming permanently deformed without breaking

Question 13

Fracture

Answer 13

A break in rocks that don’t move

Question 14

Fault

Answer 14

Breaks in rocks that do move

Question 15

Normal fault

Answer 15

Fault plane is at steep angle or almost vertical

Question 16

Fault plane

Answer 16

Surface of the fault

Question 17

Hanging wall

Answer 17

Rocks above fault plane

Question 18

Footwall

Answer 18

Below fault plane

Question 19

Reversed fault

Answer 19

Occurs when compression forces hanging wall to move up.

Question 20

Thrust fault

Answer 20

A special reverse fault. We’re the fault plane is nearly horizontal.

Question 21

Strike-slip fault

Answer 21

Rocks on either side of the fault plane slide horizontally.(like a transform fault)

Question 22

Why faulting more likely near surface of the earth?

Answer 22

Cooler temperature and lower pressure.

Question 23

Mountain range

Answer 23

A group of nearby mountains, with same shape and structure .

Question 24

Mountain system

Answer 24

Group of nearby mountain ranges

Question 25

Mountain belt

Answer 25

A group of mountain systems

Question 26

Oceanic and continental collisions

Answer 26

He reacts mountains and volcanos

Question 27

Name four types of mountains.

Answer 27

Folded and plateaus - continental & continental collision
Fault block and grabens- fault break. Crust in to large blocks then lift (reverse fault)
Volcanic -molten rock erupts on earths surface
Dome-molten rock pushes up create’s dome unsuccessful volcano