Question 1

What is an example of a true tidal wave?

Accepted Answer

A)  Tsunami 
B)  Tidal seiche 
C)  Tidal bore 
D)  Capillary wave 
A)  Tsunami 
B)  Tidal seiche 
C)  Tidal bore 
D)  Capillary wave

Question 2

Tidal friction is gradually slowing Earth's rotation.

Accepted Answer

A) True 
 B)False

Question 3

What is an ebb current?

Accepted Answer

A)  The rise in sea level as a tide crest approaches 
B)  The rise in sea level as a tide trough approaches 
C)  The fall in sea level as a tide trough approaches 
D)  The fall in sea level as a tide crest approaches 
A)  The rise in sea level as a tide crest approaches 
B)  The rise in sea level as a tide trough approaches 
C)  The fall in sea level as a tide trough approaches 
D)  The fall in sea level as a tide crest approaches

Question 4

What type of current occurs during a high tide?

Accepted Answer

A)  Ebb current 
B)  Flood current 
C)  Slack water 
D)  Tidal influx 
A)  Ebb current 
B)  Flood current 
C)  Slack water 
D)  Tidal influx

Question 5

The moon and Earth remain in a stable orbit due to their mutual gravitational attraction being offset by inertia.

Accepted Answer

A) True 
 B)False

Question 6

Tides can be predicted years in advance to an accuracy of approximately 3 centimeters.

Accepted Answer

A) True 
 B)False

Question 7

How do intertidal organisms separate themselves?

Accepted Answer

A)  Zones based on the substrate brought in from the tides 
B)  Zones based on the amount of submergence or emergence in water 
C)  Zones based on the height of the tides 
D)  Zones based on the amount of nutrients brought in from the tides. 
A)  Zones based on the substrate brought in from the tides 
B)  Zones based on the amount of submergence or emergence in water 
C)  Zones based on the height of the tides 
D)  Zones based on the amount of nutrients brought in from the tides.

Question 8

What has a large impact on the heights and patterns of tides?

Accepted Answer

A)  Climate 
B)  Gravity 
C)  Wavelength 
D)  Basin topography 
A)  Climate 
B)  Gravity 
C)  Wavelength 
D)  Basin topography

Question 9

Due to tractive forces, solar bulges are ____ in comparison to lunar bulges.

Accepted Answer

A)  larger 
B)  smaller 
C)  equal 
D)  unable to affect tides 
A)  larger 
B)  smaller 
C)  equal 
D)  unable to affect tides

Question 10

Large, enclosed bodies of water like the Mediterranean and Baltic seas are subject to large tidal ranges.

Accepted Answer

A) True 
 B)False

Question 11

How do various organisms utilize the tides? Can you think of examples of these?

Accepted Answer

Answer should include:
•	Some organisms

Question 12

There are over 140 factors that affect the generation and alteration of tides in the ocean.

Accepted Answer

A) True 
 B)False

Question 13

What is the tidal datum in reference to in regions with semidiurnal mixed tides?

Accepted Answer

A)  Mean lower low water 
B)  Mean low water 
C)  Tidal range 
D)  Mean tide 
A)  Mean lower low water 
B)  Mean low water 
C)  Tidal range 
D)  Mean tide

Question 14

When do tidal currents reach their maximum velocity?

Accepted Answer

A)  Midway between slack water and high tide 
B)  During the period of slack water 
C)  Midway between high and low tide 
D)  Midway between low tide and slack water 
A)  Midway between slack water and high tide 
B)  During the period of slack water 
C)  Midway between high and low tide 
D)  Midway between low tide and slack water

Question 15

When high or low tidal currents begin to change direction, it is called:

Accepted Answer

A)  Ebb water 
B)  Flood water 
C)  Slack water 
D)  Stagnant water 
A)  Ebb water 
B)  Flood water 
C)  Slack water 
D)  Stagnant water

Question 16

What is an amphidromic point?

Accepted Answer

A)  A node in the center of the Earth 
B)  A node in the center of an ocean basin 
C)  A node in the center of the Earth-moon orbit 
D)  A node that indicates the peak in a tidal wave's crest 
A)  A node in the center of the Earth 
B)  A node in the center of an ocean basin 
C)  A node in the center of the Earth-moon orbit 
D)  A node that indicates the peak in a tidal wave's crest

Question 17

What is the reference level to which a tidal height is compared to?

Accepted Answer

A)  Datum 
B)  Amphidromic point 
C)  Tidal range 
D)  Bore point 
A)  Datum 
B)  Amphidromic point 
C)  Tidal range 
D)  Bore point

Question 18

What is needed to calculate the speed and direction of tidal current while at sea?

Accepted Answer

A)  The shape of the ocean basin below 
B)  The magnitude of gravitational forces and inertia 
C)  The position of the amphidromic point 
D)  All of these choices 
A)  The shape of the ocean basin below 
B)  The magnitude of gravitational forces and inertia 
C)  The position of the amphidromic point 
D)  All of these choices

Question 19

What determines the velocity of a tidal wave?

Accepted Answer

A)  Ocean depth 
B)  Gravity 
C)  Trade winds 
D)  Coriolis effect 
A)  Ocean depth 
B)  Gravity 
C)  Trade winds 
D)  Coriolis effect

Question 20

What is the Earth's greatest distance from the sun?

Accepted Answer

A)  Apogee 
B)  Perigee 
C)  Aphelion 
D)  Perihelion 
A)  Apogee 
B)  Perigee 
C)  Aphelion 
D)  Perihelion

What is an example of a true tidal wave?

Tidal friction is gradually slowing Earth's rotation.

What is an ebb current?

What type of current occurs during a high tide?

The moon and Earth remain in a stable orbit due to their mutual gravitational attraction being offset by inertia.

Tides can be predicted years in advance to an accuracy of approximately 3 centimeters.

How do intertidal organisms separate themselves?

What has a large impact on the heights and patterns of tides?

Due to tractive forces, solar bulges are ____ in comparison to lunar bulges.

Large, enclosed bodies of water like the Mediterranean and Baltic seas are subject to large tidal ranges.

How do various organisms utilize the tides? Can you think of examples of these?

There are over 140 factors that affect the generation and alteration of tides in the ocean.

What is the tidal datum in reference to in regions with semidiurnal mixed tides?

When do tidal currents reach their maximum velocity?

When high or low tidal currents begin to change direction, it is called:

What is an amphidromic point?

What is the reference level to which a tidal height is compared to?

What is needed to calculate the speed and direction of tidal current while at sea?

What determines the velocity of a tidal wave?

What is the Earth's greatest distance from the sun?

The Origin of the Ocean

A History of Marine Science

Earth Structure and Plate Tectonics

Ocean Basins

Ocean Sediments

Water and Ocean Structure

Ocean Chemistry

Circulation of the Atmosphere

Circulation of the Ocean

Waves

Coasts

Life in the Ocean

Plankton, Algae, and Plants

Marine Animals

Marine Communities

Marine Resources

The Ocean and The Environment

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Exam 11: Tides

What is an example of a true tidal wave?

Tidal friction is gradually slowing Earth's rotation.

What is an ebb current?

What type of current occurs during a high tide?

The moon and Earth remain in a stable orbit due to their mutual gravitational attraction being offset by inertia.

Tides can be predicted years in advance to an accuracy of approximately 3 centimeters.

How do intertidal organisms separate themselves?

What has a large impact on the heights and patterns of tides?

Due to tractive forces, solar bulges are ____ in comparison to lunar bulges.

Large, enclosed bodies of water like the Mediterranean and Baltic seas are subject to large tidal ranges.

How do various organisms utilize the tides? Can you think of examples of these?

There are over 140 factors that affect the generation and alteration of tides in the ocean.

What is the tidal datum in reference to in regions with semidiurnal mixed tides?

When do tidal currents reach their maximum velocity?

When high or low tidal currents begin to change direction, it is called:

What is an amphidromic point?

What is the reference level to which a tidal height is compared to?

What is needed to calculate the speed and direction of tidal current while at sea?

What determines the velocity of a tidal wave?

What is the Earth's greatest distance from the sun?

The Origin of the Ocean

A History of Marine Science

Earth Structure and Plate Tectonics

Ocean Basins

Ocean Sediments

Water and Ocean Structure

Ocean Chemistry

Circulation of the Atmosphere

Circulation of the Ocean

Waves

Coasts

Life in the Ocean

Plankton, Algae, and Plants

Marine Animals

Marine Communities

Marine Resources

The Ocean and The Environment

Filters