Chapter 14-Movement Of Ocean Water

Front 1

Stream like movements of ocean water are called _____.They are caused by uneven _____ of the ocean's water, rotation of the earth, and the postion of earth's contients.

Back 1

currents
heating

Front 2

____________ theorized that currents carried people across Peru to the _________ islands in the pacific.His raft,the ___-____ sailed morethan 6,000 miles to shoe this could be done.

Back 2

Thorhyerdahl
Polynesians
Kon-Tiki

Front 3

Streams of ocean water in the upper few hundred meters of the ocean are called ______ currents.One of the largest if the ___ Stream along Eastern Us, which carries __x more water than all the rivers in the world.____ ________ made early attempts to map it.

Back 3

Surface
Gulf
25
Ben Franklin

Front 4

Surface currents are caused by 4 factories.1)_____,2) the _______ Effect,which is caused by the rotation of the Earth.It makes water currents and wind patterns to rotate clockwise in the Northern Hemisphere.

Back 4

Wind
Coriollis

Front 5

___________ Defelcation ( change of direction of currents caused bythe position of earth's land ___________.

Back 5

Contiental
masses

Front 6

The unequal heating of Earth's waters. _____ currents move from poles toward the _________,warm currents from equator to _______.

Back 6

cold
equator
poles

Front 7

Stream like movements far below the ocean's surface are called _____ currents.They r caused by the ______ of the water.Define density-

Back 7

Deep
Density
Mass for unit volume, or how heavy something is for its size

Front 8

Denser water will sink, less dense water will_____ in the ocean.Water is denser when it is _____,when it has more salt in it.

Back 8

rise
cold

Front 9

Water at the poles is _____ in temp. and will sink.Water at the equator is _______ in temp. and will rise.Therefore a deep cold temp. current flows from ____ to equator while a warm temp.surface current flows from equator toward the _____.

Back 9

cold
warmer
poles
poles

Front 10

When water freezes,the salt in it is forced out. Water melted from icebergs in the ocean is pure enough to _____.As ocean water freezes , the salt "squeezed out' makes water around it saltier.More dense and cause itt to _____.

Back 10

drink
sink

Front 11

If you divide wavelength by wave period, you find the _____ _______.

Back 11

wave speed

Front 12

For a wavelength of 10m and a wave period of 2 seconds,find the wave speed in m/sec:

Back 12

wave speed=wave length/wave period=10m/2sec=5m/sec

Front 13

Though waves appear to move from place to place, the water only moves ___ and down in the same place, it's the _______ that actually moves forward and causes the wave.

Back 13

up
energy

Front 14

The pattern of water movement is in a ______ pattern

Back 14

circular

Front 15

Waves ________ in height as they approach the shore because the water gets shallow, pushing the energy of the wave upward.

Back 15

increase

Front 16

_____-______ waves move in water deeper than half their wavelength.

Back 16

deep-water

Front 17

_______-_______ waves are found in water less than half a wavelenght deep.

Back 17

shallow-water

Front 18

Waves that become so steep they "fall over'on themselves are called _____.The area where breakers are found is called ________.

Back 18

breakers
surf

Front 19

Currents caused when waves that hit the beach head on rush back into the ocean under incoming wave is _______ ____.

Back 19

under toe

Front 20

A _______ current is caused when waves hit the beach at an angle carrying much ________ that builds beaches and sands.

Back 20

longshore
sediment

Front 21

Waves in deep water that break in open oceans during hiigh winds and stormy weather r called ___________.

Back 21

whitecaps

Front 22

Long rolling waves in open oceanwith long wavelengths are called ______.

Back 22

swells

Front 23

Underwater _________,________,or __________ can cause irage "tidal waves" known as Tsunamis, a huge one in 2004 killed more than 250,000people,mostly around the Indian Ocean.

Back 23

Earthquakes
Landslides
volcanoes

Front 24

When South Pacific trade winds carry less warm air away from West Coast of South and Central America,it causes West Coast climateto to be _______ in temp.and causes more ______. to occur.They reach more than ___ m high.

Back 24

warmer
rain
20m (60ft)

Front 25

This phenomenon occurs every __ to __years & is called El _____. What natural disasters can it cause?

Back 25

2
12
Nino
droughts,floods,mudslides

Front 26

Large waves caused by hurrricanes are called ______ ________.They may be more than ___m high

Back 26

Storm Surges
8

Front 27

Daily rise and fall of ocean levels are called _______, and are caused by the gravitational pull of the ____ and ______on the waters of the earth.

Back 27

tides
sun
moon

Front 28

There are __ high tides per day,__hours apart.THere are 6 hours btw high tide & low tide.Time for these tides are ___min. later each day, so if a high tide today is at 4:oo PM,Tommorrow it will be at 4:50 Pm.

Back 28

2
12
50

Front 29

The relationship btw the tides & phases of the moon was discovered over 2,000 years ago by a Greek named _________.It was not fully explained, however, until Sir ______ _______ published his theories about Gravition in 1687.

Back 29

Phytheas
Issac newton

Front 30

If the Earth rotated at same rate as the moon revovles around it, the tides would be at the same time each day,but the earth rotates _______ by ___ min. a day.

Back 30

faster
50

Front 31

The ____ is much larger, but the gravity of the moon has much more effect on tides because its much _______.

Back 31

sun
closer

Front 32

The highest tidal range occur when _____,moon,and _____ r in a straight line.Thiis means high tides r very ______ & low tides r very low.These are _____ tides.

Back 32

Earth
Sun
High
high
Spring

Front 33

_____ tides occur when Earth,sun,and moon form a ______angle,& results in very little difference btw high and ______ tides.

Back 33

neap
right
low

Front 34

Tides coming in are called _____ tides, those going out r called ____ tides.

Back 34

flood
Ebb

Front 35

A place where tides rush in & out through a narrow opening is called a _______ bore a range of more than ____ ft. is found in the Bay of _____ in Canada.

Back 35

tidal
40
Fundy