DynamicPlanet-Oceanography-05-09-15-Q1

Question

Hydrothermal processes at mid-ocean ridges affect both the composition of the oceanic crust and that of seawater. For example, hydrothermal activity is the principal “sink” for the element _____________in seawater

Answer 1

phosphorus

Answer 2

. to the left in the Southern Hemisphere,

Answer 3

. to the right in the Northern Hemisphere,

Answer 4

always to the north,

Answer 5

always to the south,

Answer 6

to the right in the Southern Hemisphere

Answer 7

wind speed

Answer 8

wind duration

Answer 9

none of the above

Answer 10

all of the above

Answer 11

arises from the earth’s rotation

Answer 12

accounts for the counter-clockwise rotation of the subtropical gyres in the Northern Hemisphere

Answer 13

. accounts for the clockwise rotation of the subtropical gyres in the Northern Hemisphere

Answer 14

A and B are correct

Answer 15

A and C are correct

Answer 16

clockwise in the Northern Hemisphere

Answer 17

counter-clockwise in the Northern Hemisphere

Answer 18

associated with high pressure cells

Answer 19

never in geostrophic balance

Answer 20

A and C are correct

Answer 21

. is maintained by a balance of Coriolis and gravitational forces

Answer 22

is maintained by a balance of Coriolis, wind shear, and viscous (frictional) forces

Answer 23

. leads to a surface current 45° to the right of the wind in the Northern Hemisphere

Answer 24

A and C are correct

Answer 25

B and C are correct

Answer 26

more fires and droughts in Indonesia and Australia

Answer 27

weaker coastal upwelling of cold, nutrient-rich water off Peru

Answer 28

. more winter storms and rainfall in southern California

Answer 29

all of the above

Answer 30

none of the above

Answer 31

along the west coasts of continents typically

Answer 32

in the open ocean where currents converge

Answer 33

in the open ocean where currents diverge

Answer 34

only answers a and c are correct

Answer 35

none of the above

Answer 36

breakwater

Answer 37

salinity variations

Answer 38

density difference

Answer 39

Coriolis force

Answer 40

prevailing winds

Answer 41

wave activity

Answer 42

continental shelves

Answer 43

rift valleys

Answer 44

fractures in the sea floor

Answer 45

abyssal plains

Answer 46

continental slopes

Answer 47

sodium and chlorine are added by rain water

Answer 48

sodium and chlorine are the elements least likely to be removed by chemical and biological processes

Answer 49

submarine volcanic eruptions contribute sodium and chlorine

Answer 50

sodium and chlorine are the most abundant elements brought down by rivers

Answer 51

sodium and chlorine are created by marine organisms

Answer 52

large numbers of fish that are using up all the oxygen in the water

Answer 53

a reduction in the plant life in rivers that empty into the ocean near the dead zone

Answer 54

excessive fertilizers carried into the ocean, which cause algal blooms that lower the oxygen levels

Answer 55

thermal pollution in the ocean

Answer 56

acid precipitation falling on the ocean

Answer 57

There are 10 molecules of the chemical in one million molecules of water

Answer 58

There are 10 million molecules of the chemical in the sample.

Answer 59

There are 10 molecules of the chemical in 10 million molecules of water.

Answer 60

There are 10 million molecules of the chemical in a 1-liter beaker.

Answer 61

There are 10 molecules of water in one million molecules of the chemical.

Answer 62

Rising ocean levels as a result of global warming

Answer 63

More solar ultraviolet radiation on the earth

Answer 64

More chlorofluorocarbons in the atmosphere

Answer 65

Reduced rates of photosynthesis

Answer 66

Use of the oceans as waste disposal area

Answer 67

phosphoric acid

Answer 68

carbon disulfide

Answer 69

bicarbonate ions

Answer 70

methane gas

Answer 71

nitrogen dioxide

Answer 72

carbon dioxide

Answer 73

water vapor

Answer 74

I and II only

Answer 75

I, II and III

Answer 76

Large amounts of CO2 to promote photosynthesis

Answer 77

Cold saltwater to help form icebergs

Answer 78

Mineral-rich waters to reduce depleted mineral reserves

Answer 79

Warm water that moderates land temperatures

Answer 80

Fish to feed predators such as killer whales

Answer 81

there are more researchers studying the problem at the poles than at the equator

Answer 82

the atmosphere is thicker at the poles, so ozone destruction is easier to observe

Answer 83

large amounts of chlorofluorocarbons (CFCs) can accumulate on ice crystals formed in the cold atmosphere

Answer 84

the upper atmosphere winds form a pattern of high and low pressure systems that can cause the destruction of ozone

Answer 85

the solar UV radiation is stronger at the poles, promoting the breakdown of ozone

Answer 86

The Pacific and Indian Oceans

Answer 87

The Atlantic and Indian Oceans

Answer 88

The Arctic Sea

Answer 89

The Indian and Antartic Oceans

Answer 90

The Atlantic and Pacific Oceans

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DynamicPlanet-Oceanography-05-09-15-Q1

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