Deck 9: Tides

Question 1

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

Answer 1

True

Question 2

A synodic month is equivalent to a lunar month, 26 days in length.

Answer 2

False

Question 3

The maximum tidal range in the Bay of Fundy is on the order of 15 meters.

Answer 3

True

Question 4

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

Question 5

A spring tide occurs once per month.

Question 6

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

Question 7

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

Question 8

A semidiurnal tide is common along the Pacific coast of the United States.

Question 9

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

Question 10

The barycenter follows a smooth orbit around the Sun.

Question 11

A lunar day is shorter than a solar day.

Question 12

The monthly tidal cycle is a function of the time it takes for the moon to make one complete orbit around the Earth.

Question 13

The sun and the moon have relatively equal tide-generating forces on earth.

Question 14

The seaward flow of water due to tidal forces through an inlet is called ebb current.

Question 15

Tides are much greater during apogee than during perigee.

Question 16

Syzygy produces maximum tides due to the relative position of the sun to the Earth and the moon to the Earth and sun occurring once every 1600 years.

Question 17

Grunion depend upon the pattern of erosion and deposition of sand for the survival of their eggs.

Question 18

Due to the shape of the North Sea, it develops two amphidromic points.

Question 19

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 at quadrature.
E) when the sun is at perihelion or aphelion.

Question 20

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 21

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 22

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 23

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 24

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

A) diurnal force.
B) dynamic force
C) lunar force.
D) residual force.
E) tidal force.

Question 25

The most common tidal pattern around the world is:

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

Question 26

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 27

The tide-generating force varies:

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

Question 28

The side of the Earth that faces the moon experiences a high tide, the side of the Earth that is opposite from the moon will have a(n):

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

Question 29

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

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

Question 30

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 31

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 32

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

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

Question 33

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 34

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

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

Question 35

The center of an open ocean tidal system is called a(n):

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

Question 36

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

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

Question 37

The force that pulls an orbiting body toward the center of that orbit is called:

A) amphidromic.
B) centrifugal.
C) centripetal.
D) gravitational.
E) tidal.

Question 38

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 39

In the United States one can find semidiurnal tides along the:

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

Question 40

Compare diurnal, semidiurnal, and mixed tidal patterns.

Question 41

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

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

Question 42

Which of the following is 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 43

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 44

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 crescent
D)waxing gibbous
E)waxing perigee

Question 45

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 46

Tidal current can produce rotary currents called:

A) ebb currents.
B) flood currents.
C) shoals.
D) tidal bores.
E) whirlpools.

Question 47

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)apogee
C)perigee
D)perihelion
E)syzygy

Question 48

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)ebb current
B)ebb tide
C)flood current
D)flood tide
E)neap tide

Question 49

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 50

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

Question 51

In the United States one can find mixed tides along the:

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

Question 52

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

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

Question 53

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

Question 54

This wave formed on a river by the flood tide current is called a:

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

Question 55

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

Question 56

Distinguish between spring tides and neap tides.

Question 57

To make accurate coastal tidal predicting, one must consider:

A) diurnal tides.
B) partial tides.
C) semidiurnal tides.
D) tidal bores.
E) tidal currents.

Question 58

A full 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 59

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

Question 60

Describe tides in an open ocean basin.