Oceans Test 3

Front 1

Waves of extraordinary height and random nature in the open ocean are called

Back 1

Rouge Waves

Front 2

What process other than earthquakes produces very large Tsunamis

Back 2

Landslides

Front 3

The 2004 Indonesian Tsunami originated from what?

Back 3

An Earthquake

Front 4

Using the tides as a source of energy is possible only at a few places where tides reach at least what height?

Back 4

5 Meters

Front 5

T or F
The world’s highest tides are found in Frobisher Bay.

Back 5

False

Front 6

T or F
During El Nino cycles, sardines replace anchovy as the dominant catch on the Chilean coast

Back 6

True

Front 7

T or F
The COD fishery has declined sharply due to overexploitation in the past 25 years.

Back 7

True

Front 8

T or F
Exploitation of lower trophic levels can have unanticipated consequences due to interactive feeding patterns in the oceans.

Back 8

True

Front 9

The ocean deserts are generally found in what oceans?

Back 9

Central portions of ocean basins

Front 10

Gross primary production minus respiration equals

Back 10

net primary productivity

Front 11

T or F
Surfing tidal bores is a sport enjoyed by british surfers

Back 11

True

Front 12

How do undersea table mountains differ from seamounts

Back 12

Tablemounts are eroded volcanoes which read the ocean surface, sea mounts never reached the surface

Front 13

T or F
The undersea table mountains continue to sink more deepy as they are carried away from the mid ocean ridges and the oceanic crust becomes more dense

Back 13

True

Front 14

Detailed images of the subsea volcanoes can be acquired using

Back 14

side scan radar

Front 15

T or F
The speed of deep ocean waves increases as their size increases

Back 15

True

Front 16

True or False
The geological structure of ocean basins modifies surface as well as subsurface currents

Back 16

True

Front 17

True or False
The largest wave claimes to have been ridden successfully was the 1960 chilean Tsunami

Back 17

True

Front 18

True or False
Satellites map the ocean floor by measuring the anomay between the mean sea level and the actual sea level then calibrating to known depths of the sea floor

Back 18

True

Front 19

True or False
Undersea volcanoes are one possible source of tsunamis

Back 19

True

Front 20

True or False
Turbidity currents were first discovered as breakage occurred in undersea cables

Back 20

True

Front 21

True or False
Centripetal forces tether the Earth-Moon system

Back 21

True

Front 22

True or False
Tidal bulges due to the Moon are found on opposite sides of the earth facing toward and away from the moon

Back 22

True

Front 23

True or False
The abyssal plains are very flat because sediments have covered nearly all surface irregularities

Back 23

True

Front 24

True or False
Upwelling areas are associated with high salinity

Back 24

False

Front 25

True or False
Centers of the ocean basins are populated by neritic species

Back 25

False

Front 26

The average hight of land above sea level is ... the average ocean depth

Back 26

less than

Front 27

The deepst ocean sights are found at

Back 27

ocean trenchs

Front 28

The most productive sites of all the ocean are

Back 28

salt marshes

Front 29

True or False
The wave period of a progressive wave is the number of crests or troughs that pass a fixed point in a given amount of time

Back 29

True

Front 30

True or False
The dominate restoring foce for wind waves is gravity

Back 30

True

Front 31

True or False
The higher the wave the more potential and kinetic energy it contains

Back 31

true

Front 32

True or False
Three factors that determine the size of waves in the sea are wind speed, direction and fetch.

Back 32

False

Front 33

True or False
A fully developed sea occurs when all the waves present have reached their height distribution defined by wind conditions

Back 33

True

Front 34

True or False
about half of the wave in the ocean have height of 2 cm or less

Back 34

false

Front 35

True or False
when waves enter shallow water the presesne of the bottom causes waves to slow down

Back 35

true

Front 36

True or False
the process of refraction causes waves to approach a beach nearly parallel to the shoreline even if their inital direction is different

Back 36

true

Front 37

True or False
in the open ocean the largest tsunamies have a small height and may not be notices

Back 37

trueq

Front 38

True or False
swimming perpendicular to a rip current allows one to swim back to shore

Back 38

true

Front 39

tidal waves are an example of

Back 39

forced waves

Front 40

deep water waves for which gravity is the dominant restoring force are also called

Back 40

gravity waves

Front 41

wind generated wave have different speeds and group tougether beacause of

Back 41

dispersion

Front 42

the aerage of the highest 1/3 of waves present in a sea is called the

Back 42

significant height

Front 43

wave currents intereactions can cause rare but extraordinarliy large waves called

Back 43

rouge waves

Front 44

the costal zone along which breakers are prevalent is called the

Back 44

surf

Front 45

one physical event that can offur in order to produce a tsunami is

Back 45

displacement of the sea floor

Front 46

the wave that sloshed back and for in lake okachobee buring the 1935 hurrican was a

Back 46

seiche

Front 47

water flows seaward through the surf in narrow

Back 47

rip currents

Front 48

True or False
three types of tides differ in the number of high and low tides per day and in their realiative heights

Back 48

true

Front 49

True or False
semidaily tides have two unequal high tides and two unequal low tides

Back 49

false

Front 50

True or False
another term for tidal range is daily inequality

Back 50

false

Front 51

True or False
the greatest tidal ranges occur during spring tides

Back 51

true

Front 52

True or False
sir isaac newton is credited with laying the foundation for understanding and predicting tides

Back 52

true

Front 53

True or False
gravitational attraction of the moon is equal everywhere across teh earth

Back 53

flase

Front 54

True or False
the greater mass of the sun as compared to the moon causes its tide genereatin effect to be much larger than tidal effects fo teh moon

Back 54

false

Front 55

capillary waves are restored not by gravity but by

Back 55

surface tension

Front 56

True or False
daily tides occur infrequently on the earth but are foind at some location

Back 56

true

Front 57

True or False
variations of natural persiods for standing waves cause each basin to exhibit unique tides

Back 57

true

Front 58

True or False
tides in a basin are realitively uninfluence by the shape of the entrance to a harbor bay or sea

Back 58

false

Front 59

a plot of sea surface heigh with time will produce

Back 59

a tidal range

Front 60

in a mixed tide the difference between highest high water and lowest low water is the

Back 60

tidal range

Front 61

large daily inequalites occur in

Back 61

mixed tides

Front 62

spring tides are associated with

Back 62

new and full moons

Front 63

alignment of the earth moon and sun in one plane cause

Back 63

spring tides

Front 64

the most important tidal consituents include those due to the

Back 64

moon and sun

Front 65

what term acuratly describes all tsunamies

Back 65

long period waes

Front 66

the entrace of the tides into a restrichted area commences with the

Back 66

flood current

Front 67

the highest landslide wave was recorded in what state

Back 67

alaska