Multiple-choice: Choose the one best answer 1 Which are fractures in a rock that are closely spaced

Multiple-choice: Choose the one best answer

1

Which are fractures in a rock that are closely spaced and
regular?

A joints

B folds

C faults

D oblique slips

For Questions 2–5, refer to the following block diagram

2

Which is the fold pictured in the diagram?

A plunging
anticline

B plunging syncline

C basin

D dome

3

What kind of fault is shown?

A strike-slip fault

B reverse fault

C normal fault

D low-angle thrust
fault

4

The hanging wall of the fault is on which side of the
diagram?

A north

B south

C east

D west

5

The fold and fault illustrated on the diagram were probably
formed by which of the following?

A compressional
force only

B tensional force
only

C compressional
then tensional force

D tensional then
compressional force

6

Which scale measures an earthquake’s magnitude?

A Mercalli

B Beaufort

C Richter

D Reduced Rupert

7

Which instrument measures Earthquake waves?

A magnetometers

B gravimeters

C mass
spectrometers

D seismometers

8

What is the geographic point on the Earth’s surface that is
directly above the point at which an earthquake begins?

A focus

B epicenter

C strike

D dip

9

What type of margins are created when plates slide past each
other?

A convergent

B transform

C divergent

D normal

10

What is the driving force behind plate tectonics?

A mid-ocean rift
movement

B forces
concentrated at the ridge axis

C convection in the
mantle

D earthquake
activity

11

Where is the largest continental rift in the world?

A Southern
California

B Germany

C East Africa

D South America

12

Which type of arc is the most apparent sign of a subduction zone
and is also called a volcanic arc?

A magmatic

B back

C island

D fore

13

Earthquakes do not occur at which type of margin?

A transform

B divergent

C passive

D convergent

14

Which is the correct description of orogenesis?

A the growth of
mountain ranges as plates subduct

B the merging of a
smaller plate with a larger continental mass

C the rising of
ancient continental crust to the surface of the Earth

D the melting of
crustal materials to form magma

15

Continents consist of what two major structural components?

A shields and
platforms

B mountain belts
and cratons

C ocean basins and
plates

D terranes and
mantles

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