Exam 2

Question 1

P-waves move faster than S-waves (true or false)

Answer 1

true

Question 2

Tsunamis are cased by earthquakes.

True

False

Answer 2

true

Question 3

The deepest earthquakes occur along subduction zones at convergent plate boundaries.

True

False

Answer 3

true

Question 4

What plate converges with the South American plate to produce the Andes Mountains along the west side of South America?

Eurasian

Australian-Indian

Nova Scotia

Nazca

Answer 4

Nazca

Question 5

The Andes Mountains occur along this type of plate boundary.

divergent-continental

convergent

transform

divergent-oceanic

Answer 5

convergent

Question 6

Mid-ocean ridges occur where plates are converging toward one another.

True

False

Answer 6

false

Question 7

S-waves are the first to arrive at a seismic station.

True

False

Answer 7

false

Question 7

What type of earthquake waves are responsible for the most damage?

p-waves

radio waves

s-waves

surface waves

Answer 7

surface waves

Question 8

S-waves can travel through both liquids and solids.

True

False

Answer 8

flase

Question 9

Earthquake energy begins at this point along a fault.

epicenter

tsunami

seismic spot

focus

Answer 9

focus

Question 9

The geologic time scale is not helpful for sedimentary rocks.

True

False

Answer 9

false

Question 9

Daughter isotopes are radioactive and cause parent isotopes to decay.

True

False

Answer 9

false

Question 10

The _____ soil horizon consists primarily of organic matter, called “humus”.

Answer 10

O

Question 11

An erosional boundary with igneous or metamorphic rocks below and sedimentary rocks above is known as……

none of these three

angular unconformity

disconformity

nonconformity

Answer 11

nonconformity

Question 12

How many atoms of a radioactive isotope remain after 4 half lives it you start with 2000 atoms?

1000

125

500

250

Answer 12

125

Question 13

When determining the relative age of an undeformed sequence of sedimentary rock, you can use this rule to note that older rocks are below younger rocks.

Law of original
horizontality

Principle of inclusions

Principle of cross-cutting
relationships

Law of superposition

Answer 13

law of superposition

Question 14

The _____ soil horizon is a zone of accumulation of minerals from the horizons above.

A

C

O

B

Answer 14

B

Question 14

Calculate the number of half lives if you have 7500 atoms of the daughter and 2500 atoms of the parent.

None of these.

2

3

4

Answer 14

2

Question 15

The true soil includes all of the following horizons EXCEPT

O

A

C

B

Answer 15

C

Question 16

Absolute ages are calculated using information about radioactive isotopes and stable isotopes produced from their decay.

True

False

Answer 16

true

Question 17

The slope (or gradient) of a stream can be determined from a topographic map.

True

False

Answer 17

true

Question 18

Cut banks form along a river because _______.

the river is downcutting
to reach its base level

the water is moving slower on the inside of a meander, causing erosion

the water is moving faster around the outside of a meander, causing erosion

the water is moving over a waterfall

Answer 18

the water is moving faster around the outside of a meander, causing erosion

Question 19

This feature is found on the outside of a meander where erosion is the dominant process.

cut bank

floodplain

point bar

natural levee

Answer 19

cut bank

Question 20

When a river floods and water leaves the channel, its velocity ________.

decreases

increases

stays the same

No answer text provided.

Answer 20

decreases

Question 21

A mountain peak that has been carved by glaciers is know as a horn. True False

Answer 21

true

Question 22

Urbanized areas (and areas downstream from them) are more susceptible to flooding due to ________ in those areas. higher precipitation rates higher runoff rates lower runoff rates lower water velocities

Answer 22

higher runoff rates

Question 23

How does the cross-sectional area of a stream change when the stream floods? increases decreases remains the same

Answer 23

increases

Question 24

A stream with a well-developed floodplain, oxbow lakes, and yazoo tributaries would be considered old age mature youthful immature

Answer 24

old age

Question 25

Drumlins are erosional features where the direction of ice movement is perpendicular to the long axis. True False

Answer 25

false

Question 26

Which one of the following is NOT a depositional feature found along coastlines? sea arch barrier island spit baymouth bar

Answer 26

sea arch

Question 27

An accretionary wedge is most commonly found at a passive continental margin. True False

Answer 27

false

Question 28

The wave base depends on the wavelength. True False

Answer 28

true

Question 29

As a wave approaches land, its wavelength _________. decreases increases stays the same No answer text provided.

Answer 29

decreases

Question 30

How would you recognize a cold ocean current on a map of ocean circulation? They are indicated by blue lines. The direction of the current comes from higher latitudes to lower latitudes. The direction the arrow points. The moderate climates such as in southern California.

Answer 30

they are indicated by blue lines

Question 31

Which one of the following is NOT a depositional feature found along coastlines? sea arch barrier island spit baymouth bar

Answer 31

sea arch

Question 32

Active continental margins are common in the Atlantic Ocean. no yes

Answer 32

no

Question 33

If the wavelength is 2.2 meters, the wave base is _________ meters. 1.1 2.2 3.3 4.4

Answer 33

1.1

Question 34

What happens to a wave as it approaches the shoreline? All of the answers wavelength decreases wave height increases particle movement becomes elliptical

Answer 34

all of the answers

Question 35

The deepest locations in the ocean are deep ocean trenches. Yes No

Answer 35

yes

Question 36

In what ocean are the most deep-ocean trenches located? Pacific Arctic Atlantic Indian

Answer 36

pacific