Deck 9: Tides

Question 1

There is no horizontal tide-generating force on Earth at points directly below and opposite the Moon.

Answer 1

True

Question 2

Match the term with the appropriate phrase. You may use each answer once, more than once or not at all.

A)flood current
B)neap tide
C)spring tide
D)tidal current
E)amphidromic point
F)cotidal point
G)tidal bore
H)ebb current
water moving out from an inlet due to approaching low tide

Answer 2

H

Question 3

Match the term with the appropriate phrase. You may use each answer once, more than once or not at all.

A)tidal force
B)tidal pattern
C)tidal current
diurnal

Answer 3

B

Question 4

Match the term with the appropriate phrase. You may use each answer once, more than once or not at all.

A)flood current
B)neap tide
C)spring tide
D)tidal current
E)amphidromic point
F)cotidal point
G)tidal bore
H)ebb current
steep wave front surging up a river as a result of tides

Question 5

Match the term with the appropriate phrase. You may use each answer once, more than once or not at all.

A)flood current
B)neap tide
C)spring tide
D)tidal current
E)amphidromic point
F)cotidal point
G)tidal bore
H)ebb current
highest tidal range in the lunar cycle

Question 6

A spring tide occurs once per month.

Question 7

When spring tides coincide with lunar perigee, the tidal range is increased.

Question 8

Syzygy produces maximum tides once every 1,600 years if the relative positions of the Sun to the Earth and the Moon to the Earth are just right.

Question 9

The barycenter follows a smooth orbit around the Sun.

Question 10

Match the term with the appropriate phrase. You may use each answer once, more than once or not at all.

A)tidal force
B)tidal pattern
C)tidal current
rotary

Question 11

Match the term with the appropriate phrase. You may use each answer once, more than once or not at all.

A)flood current
B)neap tide
C)spring tide
D)tidal current
E)amphidromic point
F)cotidal point
G)tidal bore
H)ebb current
smallest tidal range in the lunar cycle

Question 12

Match the term with the appropriate phrase. You may use each answer once, more than once or not at all.

A)tidal force
B)tidal pattern
C)tidal current
centripetal

Question 13

The Sun and the Moon have relatively equal tide-generating forces on Earth.

Question 14

The tide-generating force is inversely proportional to the cube of the distance.

Question 15

Match the term with the appropriate phrase. You may use each answer once, more than once or not at all.

A)tidal force
B)tidal pattern
C)tidal current
gravitational

Question 16

Match the term with the appropriate phrase. You may use each answer once, more than once or not at all.

A)tidal force
B)tidal pattern
C)tidal current
resultant

Question 17

A lunar day is shorter than a solar day.

Question 18

Match the term with the appropriate phrase. You may use each answer once, more than once or not at all.

A)flood current
B)neap tide
C)spring tide
D)tidal current
E)amphidromic point
F)cotidal point
G)tidal bore
H)ebb current
center of an open ocean tidal system

Question 19

Match the term with the appropriate phrase. You may use each answer once, more than once or not at all.

A)tidal force
B)tidal pattern
C)tidal current
ebb

Question 20

Match the term with the appropriate phrase. You may use each answer once, more than once or not at all.

A)tidal force
B)tidal pattern
C)tidal current
mixed

Question 21

The plane through the ellipse that marks the revolution of the Earth around the Sun is called the ecliptic.

Question 22

Grunion depend upon a tide-related pattern of erosion and deposition of sand for the survival of their eggs.

Question 23

The energy of tidal currents can be harnessed to drive turbines and generate electricity.

Question 24

A semidiurnal tidal pattern is common along the Atlantic coast of the United States.

Question 25

The seaward flow of water through an inlet (such as a bay or river)due to tidal forces is called an ebb current.

Question 26

Compared with a solar day, a lunar day is:

A)equal to a solar day.
B)half the length of a solar day.
C)longer than a solar day.
D)shorter than a solar day.
E)twice the length of a solar day.

Question 27

A tidal pattern with one high tide and one low tide each lunar day is called a semidiurnal tidal pattern.

Question 28

A full lunar tidal cycle is:

A)12 hours in duration.
B)12 hours 25 minutes in duration.
C)24 hours in duration.
D)24 hours and 50 minutes in duration.
E)48 hours in duration.

Question 29

The barycenter follows:

A)a path that is perpendicular to the Earth's ecliptic.
B)a pattern that parallels the Moon's orbit.
C)a smooth orbit around the Sun.
D)a wavy path around the Sun.
E)the Earth's declination.

Question 30

The maximum tidal range at the northern end of the Bay of Fundy is on the order of 17 meters (56 feet).

Question 31

In the open ocean, the crests and troughs of tidal waves rotate around a cotidal line.

Question 32

The ________ force pulls an orbiting body toward the center of that orbit.

A)amphidromic
B)magnetic
C)centripetal
D)gravitational
E)tidal

Question 33

The vertical difference between consecutive high and low tides is called the:

A)ebb tide.
B)flood tide.
C)tidal bore.
D)tidal height.
E)tidal range.

Question 34

A diurnal tidal pattern is common along the Pacific coast of the United States.

Question 35

Tidal ranges are much greater during apogee than perigee.

Question 36

The tide-generating force varies:

A)directly with the cube of the distance between the objects.
B)directly with the square of the distance between the objects.
C)directly with the square of the distances of the objects divided by the product of the masses.
D)inversely with the cube of the distance between the objects.
E)inversely with the square of the distance between the objects.

Question 37

The center of mass of the Earth-Moon system is called the:

A)aphelion.
B)apogee.
C)barycenter.
D)perigee.
E)perihelion.

Question 38

If the side of the Earth that faces the moon experiences a high tide, then the side of the Earth that is opposite from the moon will have a/an:

A)high tide.
B)low tide.
C)neap tide.
D)proxigean tide.
E)spring tide.

Question 39

The difference between centripetal forces and gravitational forces is called the:

A)diurnal force.
B)dynamic force.
C)solar force.
D)resultant force.
E)tidal force.

Question 40

If the resultant force has a significant horizontal component (tangential to Earth's surface), it produces tidal bulges on Earth, creating what are known as:

A)tide-generating forces.
B)solar bulges.
C)lunar bulges.
D)resultant forces.
E)centripetal forces.

Question 41

In the United States semidiurnal tides commonly occur along the:

A)Atlantic coast.
B)Gulf of Alaska.
C)Gulf of Mexico coast.
D)Florida Keys.
E)Pacific coast.

Question 42

The most common tidal pattern around the world are:

A)diurnal tides.
B)mixed tides.
C)proxigean tides.
D)semidiurnal tides.
E)spring tides.

Question 43

A tidal current can produce a rapidly spinning body of water called a vortex or:

A)ebb current.
B)flood current.
C)shoal.
D)tidal bore.
E)whirlpool.

Question 44

Tidal ranges will be greatest when the Earth and the Moon are at:

A)apogee.
B)aphelion.
C)perigee.
D)perihelion.
E)proxigean.

Question 45

Which of the following produces a tidal current?

A)both ebb tides and flood tides
B)both neap tides and spring tides
C)ebb tide
D)flood tide
E)spring tide

Question 46

An area that experiences diurnal tides will have:

A)one high tide and one low tide daily.
B)one high tide and two low tides daily.
C)one low tide and two high tides daily.
D)two high tides and two low tides of nearly equal height daily.
E)two unequal low and high tides daily.

Question 47

Which of the following statements concerning tides are true?

A)At perigee, tidal ranges are minimized.
B)Diurnal tides are a tidal pattern in which there is one high tide and one low tide in a lunar day.
C)Mixed tides are a tidal pattern in which there are two high and low tides daily of approximately equal tidal heights.
D)Neap tides occur when the solar tide and the lunar tides are additive, producing the highest high tide and lower low tides.
E)Semidiurnal tides are a tidal pattern in which there are two high tides and two low tides per lunar day, one high tide higher than the other.

Question 48

Water flowing out of an enclosed basin due to the tides is called a/an:

A)ebb current.
B)flood current.
C)neap tide
D)spring tide.
E)tidal bore.

Question 49

An area that experiences semidiurnal tides will have:

A)one high tide and one low tide daily.
B)one high tide and two low tides daily.
C)one low tide and two high tides daily.
D)two high tides and two low tides of nearly equal height daily.
E)two unequal low and high tides daily.

Question 50

Neap tides occur:

A)at summer and winter solstice.
B)during a storm surge.
C)when the moon is full or new.
D)when the moon is in quadrature.
E)when the sun is at perihelion or aphelion.

Question 51

The angular distance of the Sun or the Moon above or below the Earth's equatorial plane is called the:

A)apogee.
B)declination.
C)ecliptic.
D)perihelion.
E)syzygy.

Question 52

When the Earth is at its greatest distance from the sun, it is said to be at:

A)apogee.
B)aphelion.
C)perigee.
D)perihelion.
E)proxigean.

Question 53

The maximum tidal currents are reported:

A)about half way between high and low tides.
B)at high tide.
C)at low tide.
D)during neap tides.
E)in the intertidal zone.

Question 54

A neap tide has:

A)moderately high tidal range.
B)moderately low tidal range.
C)no tidal range.
D)very high tidal range.
E)very low tidal range.

Question 55

The Bay of Fundy is well known for which tidal characteristic?

A)a diurnal tide
B)two amphidromic points
C)very large seiche
D)very low tidal range
E)very high tidal range

Question 56

This wave formed on a river by a flood current is called a/an:

A)ebb tide.
B)flood tide.
C)seiche
D)tidal bore.
E)tsunami.

Question 57

Spring tide occurs about:

A)once per month.
B)once per season.
C)once per year.
D)twice per month.
E)twice per year.

Question 58

A spring tide:

A)has moderate high and low tides.
B)occurs at a blue moon.
C)occurs at the vernal equinox.
D)has very high high tides and very low low tides
E)has very little difference between high and low tides.

Question 59

In the United States mixed tides commonly occur along:

A)the Atlantic coast.
B)Cape Cod.
C)the Gulf of Mexico coast.
D)the Florida Keys.
E)the Pacific coast.

Question 60

The center of an open ocean tidal system is called a/an:

A)amphidromic point.
B)cotidal center.
C)rotary center.
D)seiche.
E)tidal flux.

Question 61

Discuss the relationship between the Earth's rotation and the location of tidal bulges.

Question 62

Describe the number of high and low tides in a lunar day, including the period, and any inequality of diurnal, semidiurnal, and mixed tide types.

Question 63

Examine the five words and/or phrases and determine the relationship among the majority of words/phrases. Choose the one option that does not fit the pattern.
A. neap tide
B) ebb current
C) ebb tide
D) flood current
E) flood tide

Question 64

Examine the five words and/or phrases and determine the relationship among the majority of words/phrases. Choose the one option that does not fit the pattern.
A. aphelion
B) nadir
C) apogee
D) perigee
E) perihelion

Question 65

Describe the tides in an open-ocean basin.

Question 66

Briefly describe why the Sun's influence on Earth's tides is only 46% that of the Moon, even though the Sun is much more massive that the Moon.

Question 67

Differentiate between apogee and perigee and briefly discuss the effect on tidal height when perigee coincides with spring tide.

Question 68

Briefly describe the factors that produce the world's largest tidal range in the Bay of Fundy, Nova Scotia in northeastern Canada.

Question 69

Examine the five words and/or phrases and determine the relationship among the majority of words/phrases. Choose the one option that does not fit the pattern.
A. diurnal
B) semidiurnal
C) mixed
D) quadrature
E) mixed semidiurnal

Question 70

Examine the five words and/or phrases and determine the relationship among the majority of words/phrases. Choose the one option that does not fit the pattern.
A. full moon
B) neap tide
C) new moon
D) spring tide
E) syzygy

Question 71

Compare diurnal, semidiurnal, and mixed tidal patterns.

Question 72

Examine the five words and/or phrases and determine the relationship among the majority of words/phrases. Choose the one option that does not fit the pattern.
A. waning crescent
B) waning gibbous
C) waxing perigee
D) waxing crescent
E) waxing gibbous

Question 73

Distinguish between spring tides and neap tides.

Question 74

Discuss the influence of the relative masses and distance between the two objects on tide-generating forces.

Question 75

How do centripetal forces and gravitation forces interact to produce the tides?