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Ch 11 ESR - Mountain Building

Total questions: 20

Worksheet time: 10mins

Name
Class
Date
1.

Once their strength is exceeded, rocks near the surface behave like

a)

clay

b)

metal

c)

glass

2.

At depth, where temperatures and pressures are high, rocks exhibit

a)

brittle deformation

b)

ductile deformation

3.

Which stress causes rocks to be pulled in opposite directions, hence may cause them to stretch?

a)

Tensional stress

b)

Compressional stress

c)

Shear stress

4.

Based on the principles of isostasy, which of the following is false?

a)

Thick sections of crustal material float higher than thinner slabs.

b)

A mountain will ultimately be eroded to near sea level.

c)

The concept of a floating crust in gravitational balance is isostasy.

d)

A thickened block would sink and the top would be lower than before.

5.

Which of the following statements is true for folding in sedimentary rock layers?

a)

Upfolds are called synclines.

b)

Symmetrical folds are called monoclines.

c)

Downfolds are called synclines.

d)

Overturned folds have no trough.

6.

Faults are generally closely associated with

a)

monoclines

b)

anticlines

c)

synclines

d)

symmetrical folds

7.

The movement of crust in a normal fault is

a)

Mostly vertical direction

b)

Mostly horizontal direction

c)

Only vertical direction

d)

Equally in vertical and horizontal direction

8.

Faults that occur due to tensional stress are called

a)

Normal

b)

Reverse

c)

Thrust

d)

Strike-slip

9.

Which of the following can be produced at an ocean continental convergence?

a)

continental volcanic arc

b)

volcanic island arc

c)

mid-ocean ridge

d)

graben bounded by horsts

10.

An accumulation of different sedimentary and metamorphic rocks combined with scraps of ocean crust are called

a)

dome

b)

volcanic island arc

c)

accretionary wedge

d)

fault-block mountain

11.

Which of the following is associated with divergent boundaries?

a)

continental volcanic arc

b)

volcanic island arc

c)

mid-ocean ridge

d)

graben bounded by horsts

12.

Factors that influence the strength and deformation of a rock include ___________, pressure, rock type, and time.

a)

stress

b)

flow

c)

temperature

d)

water

13.

A distortion in rock with no change in volume is caused by ___________.

a)

tensional stress

b)

compressional stress

c)

shear stress

14.

Upfolding most often results in

a)

anticline

b)

syncline

c)

monocline

15.

Large-scale displacement of rock layers occurs most often in

a)

Normal faults

b)

Reverse faults

c)

Thrust faults

d)

Strike-slip faults

16.

In a(n) ___________ fault, the hanging wall block moves up relative to the footwall block.

a)

Normal

b)

Reverse

c)

Strike-slip

17.

Fault-block mountains form when large blocks of crust are ___________ and tilted along normal faults.

a)

downlifted

b)

uplifted

c)

pulled

d)

pushed

18.

In domes, the _______ rocks are found in the core

a)

Oldest

b)

Youngest

19.

A process called ___________ occurs when fragments of crust collide with a continental plate and become stuck to or embedded into the continent.

a)

deformation

b)

accretion

c)

uplifting

d)

isostasy

20.

Most mountain-building occurs at ___________ plate boundaries.

a)

convergent

b)

divergent

c)

transform