When does the Earth reach its perihelion?

Correct Option: D. Solution: The Earth reaches its perihelion in January.

Movements of Ocean Water

Objectives Notes Exam Tips Practice Qs Ask AI

Learning Objectives

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Learning Objectives

Understand the dynamics of ocean water movements.
Describe the characteristics and causes of waves.
Explain the concept of tides and their significance.
Identify the types of tides based on frequency and height.
Analyze the factors influencing ocean currents.
Differentiate between surface currents and deep water currents.
Recognize the effects of ocean currents on climate and human activities.

Revision Notes & Summary

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Movements of Ocean Water

Overview

Ocean water is dynamic, influenced by physical characteristics (temperature, salinity, density) and external forces (sun, moon, winds).
Movements are categorized into horizontal (currents and waves) and vertical (tides).

Waves

Definition: Waves are energy moving across the ocean surface; water particles move in small circles.
Causes: Wind provides energy, causing waves to travel and release energy on shorelines.
Characteristics:
- Crest: Highest point of a wave.
- Trough: Lowest point of a wave.
- Wave Height: Vertical distance from trough to crest.
- Wave Amplitude: Half of the wave height.
- Wave Period: Time interval between two successive crests.
- Wavelength: Distance between two successive crests.
- Wave Speed: Rate at which the wave moves, measured in knots.
- Wave Frequency: Number of waves passing a point in one second.

Tides

Definition: Periodical rise and fall of sea level due to gravitational pull of the sun and moon.
Types of Tides:
- Semi-diurnal Tide: Two high and two low tides each day.
- Diurnal Tide: One high tide and one low tide each day.
- Mixed Tide: Variations in height, common in certain regions.
Spring Tides: Occur when the sun, moon, and earth are aligned, resulting in higher tides.
Neap Tides: Occur when the sun and moon are at right angles, resulting in lower tides.
Importance: Tides can be predicted, aiding navigation and fishing activities.

Ocean Currents

Definition: Regular flow of water in a definite path and direction, influenced by primary (solar heating, wind, gravity, Coriolis force) and secondary forces.
Characteristics:
- Surface Currents: Constitute about 10% of ocean water, strongest near the surface.
- Deep Water Currents: Make up 90% of ocean water, influenced by density and gravity.
- Cold Currents: Bring cold water into warm areas, typically found on west coasts.
- Warm Currents: Bring warm water into cold areas, typically found on east coasts.
Major Ocean Currents: Influenced by prevailing winds and Coriolis force, affecting climate and marine life.

Effects of Ocean Currents

Influence on climate and weather patterns.
Mixing of warm and cold currents supports marine ecosystems and fishing grounds.

Exam Tips & Common Mistakes

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Common Mistakes and Exam Tips

Common Pitfalls

Misunderstanding Tides: Students often confuse tides with waves. Remember, tides are the periodic rise and fall of sea levels due to gravitational forces, while waves are the energy moving across the ocean surface.
Forgetting Key Terms: Terms like 'crest', 'trough', 'wave height', and 'wave period' are crucial. Ensure you understand these definitions clearly.
Ignoring the Role of the Moon and Sun: Many overlook how the gravitational pull of the moon and sun affects tides. Always consider their positions when discussing tidal heights.
Confusing Types of Tides: Be clear on the differences between semi-diurnal, diurnal, and mixed tides. Each has distinct characteristics regarding frequency and height.

Exam Tips

Practice Multiple Choice Questions: Familiarize yourself with the format and types of questions that may appear on the exam, especially regarding definitions and causes of tides and currents.
Use Diagrams: When studying, draw diagrams to visualize concepts like tidal bulges and ocean currents. This can help reinforce your understanding.
Review Key Concepts Regularly: Regularly revisit the definitions and characteristics of waves, tides, and ocean currents to ensure retention.
Understand the Importance of Ocean Currents: Be prepared to explain how ocean currents affect climate and human activities, as this is often a focus in exam questions.

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Practice Test – MCQs, True/False

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Multiple Choice Questions

The gravitational pull of the moon

The strength and duration of the wind

The temperature of the ocean water

The salinity of the ocean water

Correct Answer: B

Solution:

The height of ocean waves is primarily determined by the strength and duration of the wind. The wind transfers energy to the water, causing waves to grow larger as they move and absorb more energy.

They increase the salinity of the coastal waters

They cause frequent storms

They transport heat, influencing temperature and precipitation patterns

They increase the tidal range

Correct Answer: C

Solution:

Ocean currents transport heat from one latitude to another, affecting the climate of coastal regions by influencing temperature and precipitation patterns, such as causing milder winters and cooler summers.

The region is near the moon's perigee.

The region is near the moon's apogee.

The region is experiencing neap tides.

The region is experiencing a solar eclipse.

Correct Answer: A

Solution:

When the moon's orbit is closest to the earth (perigee), unusually high and low tides occur, resulting in a greater tidal range.

Cold current

Warm current

Equatorial current

Counter current

Correct Answer: B

Solution:

Warm currents flow parallel to the east coasts of continents in tropical and subtropical latitudes, resulting in warm and rainy climates.

Warm and rainy climate

Cold and dry climate

Cool summers and mild winters

Arid with fog

Correct Answer: A

Solution:

Warm currents flowing parallel to the east coasts of continents in tropical and subtropical latitudes typically result in warm and rainy climates.

Occurs when the sun and moon are at right angles

Occurs when the sun, moon, and earth are in a straight line

Occurs only once a month

Has the lowest tidal range

Correct Answer: B

Solution:

Spring tides occur when the sun, moon, and earth are aligned, resulting in higher tides.

Magnetic force

Centrifugal force

Gravitational force

Nuclear force

Correct Answer: C

Solution:

Gravitational force, along with other forces like wind and Coriolis force, influences the movement of ocean currents.

Warm current

Cold current

Equatorial current

Counter current

Correct Answer: B

Solution:

Cold currents are typically found on the west coast of continents in low and middle latitudes. These currents bring cooler water from higher latitudes towards the equator.

Semi-diurnal tide

Diurnal tide

Mixed tide

Spring tide

Correct Answer: B

Solution:

A diurnal tide has one high tide and one low tide each day.

It speeds up

It slows down

It maintains its speed

It disappears

Correct Answer: B

Solution:

As a wave approaches the beach, it slows down due to the friction between the dynamic water and the sea floor.

Warm surface current

Cold surface current

Upwelling

Downwelling

Correct Answer: C

Solution:

Upwelling brings nutrient-rich water from the deep ocean to the surface, promoting the growth of plankton.

The experiment demonstrates the principle of ocean currents driven by wind.

The experiment demonstrates the principle of ocean currents driven by temperature and salinity differences.

The experiment demonstrates the principle of ocean currents driven by solar energy.

The experiment demonstrates the principle of ocean currents driven by the Coriolis force.

Correct Answer: B

Solution:

The experiment is demonstrating the principle that ocean currents can be driven by differences in water density, which are affected by temperature and salinity.

A warm current flows parallel to the coast.

A cold current flows parallel to the coast.

The city is located near a major river delta.

The city is influenced by monsoon winds.

Correct Answer: B

Solution:

A cold current flowing parallel to the coast can cause a significant drop in temperature during the summer, as it brings cooler water from higher latitudes.

Tides would become weaker

Tides would become stronger

Tides would remain unchanged

Tides would occur more frequently

Correct Answer: B

Solution:

An increase in the moon's gravitational pull would result in stronger tides, as the gravitational attraction is a major factor in tide generation.

Upwelling

Downwelling

Thermohaline circulation

Tidal bores

Correct Answer: A

Solution:

Upwelling is a process where deep, nutrient-rich waters rise to the surface, providing an abundant supply of nutrients that support marine life.

Warm current

Cold current

Surface current

Deep water current

Correct Answer: B

Solution:

Cold currents are usually found on the west coast of continents in low and middle latitudes.

The Earth, Moon, and Sun are aligned in a straight line.

The Earth, Moon, and Sun form a right angle.

The Moon is at its apogee.

The Earth is at its aphelion.

Correct Answer: A

Solution:

Spring tides occur when the Earth, Moon, and Sun are aligned in a straight line, resulting in higher than usual tides.

The gravitational pull of the moon.

The friction between wind and water surface.

The centrifugal force of the earth's rotation.

The salinity of ocean water.

Correct Answer: B

Solution:

Wave energy is primarily driven by the wind, which causes friction with the water surface, leading to wave formation and energy transfer that contributes to coastal erosion.

Coriolis force

Gravity

Wind

Heating by solar energy

Correct Answer: D

Solution:

Heating by solar energy causes the water to expand, creating a gradient that initiates the movement of ocean currents.

It causes currents to flow in a straight line.

It deflects currents to the right in the Northern Hemisphere and to the left in the Southern Hemisphere.

It increases the speed of ocean currents.

It has no effect on ocean currents.

Correct Answer: B

Solution:

The Coriolis force deflects the path of ocean currents to the right in the Northern Hemisphere and to the left in the Southern Hemisphere, influencing their direction.

Aphelion

Perigee

Perihelion

Apogee

Correct Answer: B

Solution:

The distance between the Earth and the moon is minimum when the moon is in perigee.

Semi-diurnal tide

Diurnal tide

Mixed tide

Tri-diurnal tide

Correct Answer: D

Solution:

A tri-diurnal tide, although not common, would describe a tidal pattern with three high tides and three low tides each day. This is a hypothetical scenario as typical tides are semi-diurnal, diurnal, or mixed.

Solar energy

Wind

Gravity

Coriolis force

Correct Answer: A

Solution:

The primary force that initiates the movement of ocean currents is heating by solar energy, which causes the water to expand.

It causes currents to move in a straight line

It deflects currents to the right in the northern hemisphere

It has no effect on ocean currents

It slows down ocean currents

Correct Answer: B

Solution:

The Coriolis force causes ocean currents to deflect to the right in the northern hemisphere and to the left in the southern hemisphere.

One high tide and one low tide each day

Two high tides and two low tides each day

Tides with variations in height

Tides occurring during new moon

Correct Answer: B

Solution:

A semi-diurnal tide features two high tides and two low tides each day.

Currents would deflect to the left.

Currents would deflect to the right.

Currents would cease to exist.

Currents would flow directly from the equator to the poles.

Correct Answer: A

Solution:

If the Coriolis effect were to reverse direction, ocean currents in the Northern Hemisphere would deflect to the left instead of the right, altering the current patterns significantly.

The gravitational pull of the moon

The heating by solar energy and wind

The rotation of the Earth

The salinity of ocean water

Correct Answer: B

Solution:

Ocean currents are primarily influenced by heating from solar energy, which causes water expansion, and wind, which pushes the water. These factors, along with gravity and the Coriolis force, drive the movement of ocean currents.

To the right

To the left

No deflection

Randomly changes direction

Correct Answer: B

Solution:

In the Southern Hemisphere, the Coriolis effect causes moving currents to deflect to the left. Therefore, a current moving from the equator towards the poles will deflect to the left.

Waves move water from one place to another

Waves are caused by gravitational forces

Waves are the energy moving across the ocean surface

Waves are influenced by the Coriolis force

Correct Answer: C

Solution:

Waves are actually the energy, not the water, that moves across the ocean surface.

Wave crest is the lowest point of a wave

Wave amplitude is twice the wave height

Wave period is the time interval between two successive crests

Wavelength is the vertical distance between two crests

Correct Answer: C

Solution:

Wave period is the time interval between two successive wave crests or troughs as they pass a fixed point.

The Earth is closest to the sun

The gravitational forces of the sun and the moon align

The Earth's rotation speed increases

The Earth's distance from the moon decreases

Correct Answer: B

Solution:

Spring tides occur when the sun, the moon, and the Earth are aligned, causing their gravitational forces to combine and create higher tides.

The centrifugal force due to Earth's rotation

The gravitational pull of the sun

The gravitational pull of the moon and centrifugal force

The movement of tectonic plates

Correct Answer: C

Solution:

Tidal bulges are formed due to the gravitational pull of the moon and the centrifugal force. The gravitational attraction of the moon is greater on the side of Earth facing the moon, creating a bulge, while centrifugal force creates a second bulge on the opposite side.

Mixing of warm and cold currents

Presence of a single warm current

Presence of a single cold current

Lack of ocean currents

Correct Answer: A

Solution:

The mixing of warm and cold currents helps to replenish the oxygen and favor the growth of planktons, which are the primary food for fish populations.

Wave height

Wave period

Wave frequency

Wave amplitude

Correct Answer: B

Solution:

The wave period is the time interval between two successive wave crests passing a fixed point.

The moon and the sun pulling the Earth gravitationally in the same direction.

The moon and the sun pulling the Earth gravitationally in the opposite direction.

Indention in the coastline.

None of the above.

Correct Answer: A

Solution:

Spring tides are caused when the moon and the sun pull the Earth gravitationally in the same direction.

Gravitational pull of the moon

Wind

Earth's rotation

Temperature differences

Correct Answer: B

Solution:

Wind is one of the primary forces that initiate the movement of ocean currents.

Gravitational pull of the moon

Wind

Earth's rotation

Tidal forces

Correct Answer: B

Solution:

Waves are primarily caused by the wind driving against the water surface.

Water particles move in a circular motion.

Water moves horizontally across the ocean surface.

Water particles move vertically up and down.

Water moves in a straight line from one place to another.

Correct Answer: A

Solution:

In ocean waves, the water particles move in a circular motion, allowing the energy to travel across the ocean surface while the water itself does not move horizontally.

Warm and rainy climate due to warm currents.

Cool and arid climate due to cold currents.

Hot and dry climate due to warm currents.

Mild and wet climate due to cold currents.

Correct Answer: B

Solution:

West coasts of continents in the northern hemisphere are typically bordered by cold currents, which result in cooler and arid climates.

The wind speed over the ocean

The temperature of the ocean water

The friction between the water and the sea floor

The salinity of the ocean water

Correct Answer: C

Solution:

As waves approach the shore, the friction between the dynamic water and the sea floor causes the waves to slow down and increase in height until they break.

It decreases wave height

It increases wave speed

It provides energy to the waves

It stops wave movement

Correct Answer: C

Solution:

Wind provides energy to the waves, causing them to travel across the ocean.

Arid with fog

Warm and rainy

Hot and humid

Cold and snowy

Correct Answer: A

Solution:

West coasts of continents in tropical and subtropical latitudes, except close to the equator, are bordered by cool waters, leading to arid conditions with fog.

Wave amplitude

Wave period

Wave height

Wavelength

Correct Answer: C

Solution:

Wave height is the vertical distance from the bottom of a trough to the top of a crest of a wave.

It originates from the equatorial region, carrying warm water towards higher latitudes.

It flows from the polar regions, bringing cold water towards the equator.

It circulates in the Southern Hemisphere, where temperatures are generally higher.

It is influenced by the monsoon winds, which increase its temperature.

Correct Answer: A

Solution:

The Gulf Stream is a warm ocean current because it originates from the equatorial region, carrying warm water northwards towards the higher latitudes, influencing the climate of the coastal areas it passes.

Wave height

Wave amplitude

Wavelength

Wave period

Correct Answer: C

Solution:

The horizontal distance between two successive wave crests is called the wavelength.

Waves are caused by tides, while currents are caused by wind

Waves move water horizontally, while currents move water vertically

Waves are energy moving across the ocean surface, while currents involve the actual movement of water

Waves are influenced by the moon, while currents are influenced by the sun

Correct Answer: C

Solution:

Waves are the movement of energy across the ocean surface, causing water particles to move in small circles, whereas ocean currents involve the actual movement of water in a specific direction.

Warm surface current

Cold surface current

Deep warm current

Tidal current

Correct Answer: B

Solution:

Cold surface currents bring cold water into warmer areas, which would result in a lower temperature observed in the region.

A warm current, as it flows along the east coast in low latitudes.

A cold current, as it flows along the east coast in high latitudes.

A warm current, as it flows along the west coast in low latitudes.

A cold current, as it flows along the west coast in high latitudes.

Correct Answer: A

Solution:

In the southern hemisphere, warm currents typically flow along the east coasts of continents in low and middle latitudes. Therefore, the Zyphon Current is most likely a warm current.

Earthquakes

Wind

Tides

Currents

Correct Answer: B

Solution:

Wind provides energy to the waves, causing them to grow larger as they move across the ocean.

October

September

July

January

Correct Answer: D

Solution:

The Earth reaches its perihelion in January.

Tide

Current

Wave

None of the above

Correct Answer: A

Solution:

The upward and downward movement of ocean water is known as a tide.

Warm current

Cold current

Neutral current

Tidal current

Correct Answer: B

Solution:

A current flowing from the Arctic towards the equator would be a cold current, as it originates from a polar region carrying cold water towards warmer regions.

Warm ocean current

Cold ocean current

Tidal current

Equatorial counter current

Correct Answer: A

Solution:

Warm ocean currents flowing parallel to the coast can moderate the climate, leading to mild winters and cool summers.

High salinity and low temperature increase water density, causing it to sink.

Low salinity and high temperature increase water density, causing it to sink.

High salinity and high temperature decrease water density, causing it to rise.

Low salinity and low temperature decrease water density, causing it to rise.

Correct Answer: A

Solution:

Water with high salinity and low temperature is denser than water with low salinity and high temperature, causing it to sink.

Heating by solar energy

Wind

Gravity

Coriolis force

Correct Answer: D

Solution:

The Coriolis force is a secondary force that influences the direction of ocean currents, not a primary force.

Neap tide

Spring tide

Diurnal tide

Mixed tide

Correct Answer: B

Solution:

Spring tides occur when the sun, the moon, and the earth are in a straight line, resulting in higher tides.

Currents

Tides

Waves

None of the above

Correct Answer: B

Solution:

The vertical motion refers to tides, which are the rise and fall of water in the oceans and seas.

True or False

Correct Answer: True

Solution:

The earth reaches its perihelion, the point in its orbit closest to the sun, in January.

Correct Answer: False

Solution:

Spring tides occur when the sun, the moon, and the earth are in a straight line, not at right angles.

Correct Answer: True

Solution:

Ocean currents transport heat from one latitude belt to another, affecting the climate of coastal regions.

Correct Answer: True

Solution:

The moon's gravitational pull is the major cause for the occurrence of tides, with the sun's gravitational pull being a lesser factor.

Correct Answer: False

Solution:

Ocean currents are primarily influenced by factors such as wind, solar heating, gravity, and the Coriolis force, rather than the gravitational pull of the moon.

Correct Answer: True

Solution:

Due to the coriolis force, ocean currents in the northern hemisphere tend to move to the right.

Correct Answer: False

Solution:

Tides are caused by the gravitational pull of both the moon and the sun, as well as the centrifugal force due to the Earth's rotation.

Correct Answer: False

Solution:

The distance between the earth and the moon is minimum when the moon is in perigee, not apogee.

Correct Answer: False

Solution:

Spring tides occur when the sun, the moon, and the earth are in a straight line, not at right angles.

Correct Answer: True

Solution:

The Coriolis force affects ocean currents, causing them to deflect to the right in the northern hemisphere.

Correct Answer: True

Solution:

The Bay of Fundy in Nova Scotia, Canada, experiences the highest tides in the world, with tidal bulges reaching up to 15-16 meters.

Correct Answer: True

Solution:

The Bay of Fundy in Nova Scotia, Canada, is known for having the highest tides in the world.

Correct Answer: False

Solution:

The moon's gravitational pull is the primary cause of tides on Earth, with the sun's pull being a secondary factor.

Correct Answer: False

Solution:

The vertical motion of ocean water is primarily associated with tides, not ocean currents.

Correct Answer: False

Solution:

Ocean currents are usually strongest near the surface and decrease in strength with depth.

Correct Answer: False

Solution:

The earth reaches its perihelion in January, not July.

Correct Answer: True

Solution:

The vertical motion in ocean water bodies refers to the rise and fall of water, which is associated with tides.

Correct Answer: False

Solution:

Waves are primarily caused by the wind driving against the water, not by the gravitational pull of the moon.

Correct Answer: True

Solution:

The distance between the earth and the moon is minimum when the moon is in perigee.

Correct Answer: True

Solution:

The maximum wave height is influenced by how long the wind blows and the area over which it blows in a single direction.

Correct Answer: True

Solution:

The Coriolis force affects ocean currents by causing them to deflect to the right in the northern hemisphere and to the left in the southern hemisphere.

Correct Answer: True

Solution:

The Gulf Stream is a warm ocean current that flows from the Gulf of Mexico along the eastern coastlines of the United States and Newfoundland before crossing the Atlantic Ocean. It significantly influences the climate of the west coast of Europe by bringing warmer air.

Correct Answer: True

Solution:

Spring tides occur when the gravitational forces of the moon and the sun are combined, which happens when they are aligned with the earth. This alignment causes higher high tides and lower low tides.

Correct Answer: True

Solution:

The gravitational pull of the moon is the primary force causing tides, with the sun's gravitational pull and centrifugal force also contributing.

Correct Answer: True

Solution:

Vertical motion in ocean water refers to the rise and fall of water, which is known as tides.

Correct Answer: False

Solution:

Cold ocean currents are usually found on the west coasts of continents in low and middle latitudes, not the east coasts.

Correct Answer: False

Solution:

Waves are primarily caused by the wind pushing against the water, not the gravitational pull of the moon.

Movements of Ocean Water

Learning Objectives

Learning Objectives

Revision Notes & Summary

Movements of Ocean Water

Overview

Waves

Tides

Ocean Currents

Effects of Ocean Currents

Exam Tips & Common Mistakes

Common Mistakes and Exam Tips

Common Pitfalls

Exam Tips

AI Learning Assistant

Practice Test – MCQs, True/False

Multiple Choice Questions

Q1.Which of the following factors primarily determines the height of ocean waves?

Correct Answer: B

Q2.How do ocean currents affect the climate of coastal regions?

Correct Answer: C

Q3.A new tidal power project is proposed in a region with a high tidal range. Which of the following factors is most likely contributing to this high tidal range?

Correct Answer: A

Q4.Which ocean current is known to flow parallel to the east coasts of continents in tropical and subtropical latitudes?

Correct Answer: B

Q5.Consider a scenario where a new ocean current is discovered in the northern hemisphere. It flows parallel to the east coast of a continent in tropical latitudes. Based on typical ocean current patterns, what climate characteristics might this region experience?

Correct Answer: A

Q6.Which of the following is a characteristic of a spring tide?

Correct Answer: B

Q7.Which of the following forces is primarily responsible for the movement of ocean currents?

Correct Answer: C

Q8.Which type of ocean current is typically found on the west coast of continents in low and middle latitudes?

Correct Answer: B

Q9.Which type of tide is characterized by having only one high tide and one low tide each day?

Correct Answer: B

Q10.What happens to a wave as it approaches the beach?

Correct Answer: B

Q11.A region in the ocean is observed to have a high density of plankton. Which oceanographic phenomenon is most likely contributing to this observation?

Correct Answer: C

Q12.In a laboratory experiment, scientists simulate ocean currents by creating a model where water of varying salinity and temperature is used. If they observe that denser water sinks and less dense water rises, which of the following statements is true about the experiment?

Correct Answer: B

Q13.A coastal city experiences a significant drop in temperature during the summer due to an ocean current. What could be the reason?

Correct Answer: B

Q14.If the gravitational pull of the moon were to increase suddenly, what immediate effect would this have on the tides?

Correct Answer: B

Q15.During a research expedition, scientists discover a region in the ocean where the water is unusually rich in nutrients. Which oceanographic phenomenon is most likely responsible for this?

Correct Answer: A

Q16.Which type of ocean current is typically found on the west coast of continents in low and middle latitudes?

Correct Answer: B

Q17.Which of the following conditions leads to the formation of spring tides?

Correct Answer: A

Q18.A new research study is conducted to analyze the effects of ocean waves on coastal erosion. If the study finds that wave energy is the primary driver of erosion, which of the following factors is most likely contributing to this phenomenon?

Correct Answer: B

Q19.What is the primary force that initiates the movement of ocean currents?

Correct Answer: D

Q20.How does the Coriolis force affect ocean currents?

Correct Answer: B

Q21.What is the distance between the Earth and the moon when the moon is at its closest point?

Correct Answer: B

Q22.Consider a scenario where a new island is discovered in the Pacific Ocean. The island experiences a unique tidal pattern where there are three high tides and three low tides each day. Which of the following best describes this tidal pattern?

Correct Answer: D

Q23.What is the primary force that initiates the movement of ocean currents?

Correct Answer: A

Q24.What is the effect of the Coriolis force on ocean currents?

Correct Answer: B

Q25.Which of the following describes a semi-diurnal tide?

Correct Answer: B

Q26.If the Coriolis effect were to reverse direction, what impact would it have on ocean currents in the Northern Hemisphere?

Correct Answer: A

Q27.Which of the following best describes the primary cause for the formation of ocean currents?

Correct Answer: B

Q28.In a hypothetical scenario, a new ocean current is discovered that flows from the equator towards the poles in the Southern Hemisphere. Based on the Coriolis effect, in which direction is this current most likely to deflect?

Correct Answer: B

Q29.Which of the following is a characteristic of ocean waves?

Correct Answer: C

Q30.Which of the following is a characteristic of a wave?

Correct Answer: C

Q31.What is the main reason for the occurrence of spring tides?

Correct Answer: B

Q32.What causes the formation of tidal bulges on Earth?