UPSC Static Quiz – Geography : 9 January 2025

UPSC Static Quiz – Geography : 9 January 2025 We will post 5 questions daily on static topics mentioned in the UPSC civil services preliminary examination syllabus. Each week will focus on a specific topic from the syllabus, such as History of India and Indian National Movement, Indian and World Geography, and more.We are excited to bring you our daily UPSC Static Quiz, designed to help you prepare for the UPSC Civil Services Preliminary Examination. Each day, we will post 5 questions on static topics mentioned in the UPSC syllabus. This week, we are focusing on Indian and World Geography.

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• Question 1 of 5 1. Question Consider the following Pairs: Measurement Scale Description A) Richter Scale 1) Measures the energy released at the source of the earthquake using seismic moment B) Mercalli Intensity Scale 2) Rates earthquakes based on observed effects and damage C) Moment Magnitude Scale 3) Logarithmic scale measuring amplitude of seismic waves recorded by seismographs D) Rossi-Forel Scale 4) An obsolete scale that was one of the first to classify earthquake intensity How many of the above pairs are correctly matched? a) One only b) Two only c) Three only d) None of the above Correct Solution: a) The Richter Scale (A) measures the amplitude of seismic waves recorded by seismographs and is logarithmic (Description 3). The Mercalli Intensity Scale (B) rates earthquakes based on observed effects and damage, using a subjective assessment (Description 2). The Moment Magnitude Scale (C) measures the energy released at the source of the earthquake using seismic moment, providing a more accurate measurement for large earthquakes (Description 1). The Rossi-Forel Scale (D) is an obsolete scale that was one of the first to classify earthquake intensity based on observed effects (Description 4). Incorrect Solution: a) The Richter Scale (A) measures the amplitude of seismic waves recorded by seismographs and is logarithmic (Description 3). The Mercalli Intensity Scale (B) rates earthquakes based on observed effects and damage, using a subjective assessment (Description 2). The Moment Magnitude Scale (C) measures the energy released at the source of the earthquake using seismic moment, providing a more accurate measurement for large earthquakes (Description 1). The Rossi-Forel Scale (D) is an obsolete scale that was one of the first to classify earthquake intensity based on observed effects (Description 4).

#### 1. Question

Consider the following Pairs:

Measurement Scale | Description

A) Richter Scale | 1) Measures the energy released at the source of the earthquake using seismic moment

B) Mercalli Intensity Scale | 2) Rates earthquakes based on observed effects and damage

C) Moment Magnitude Scale | 3) Logarithmic scale measuring amplitude of seismic waves recorded by seismographs

D) Rossi-Forel Scale | 4) An obsolete scale that was one of the first to classify earthquake intensity

How many of the above pairs are correctly matched?

• a) One only

• b) Two only

• c) Three only

• d) None of the above

Solution: a)

• The Richter Scale (A) measures the amplitude of seismic waves recorded by seismographs and is logarithmic (Description 3).

• The Mercalli Intensity Scale (B) rates earthquakes based on observed effects and damage, using a subjective assessment (Description 2).

• The Moment Magnitude Scale (C) measures the energy released at the source of the earthquake using seismic moment, providing a more accurate measurement for large earthquakes (Description 1).

• The Rossi-Forel Scale (D) is an obsolete scale that was one of the first to classify earthquake intensity based on observed effects (Description 4).

Solution: a)

• The Richter Scale (A) measures the amplitude of seismic waves recorded by seismographs and is logarithmic (Description 3).

• The Mercalli Intensity Scale (B) rates earthquakes based on observed effects and damage, using a subjective assessment (Description 2).

• The Moment Magnitude Scale (C) measures the energy released at the source of the earthquake using seismic moment, providing a more accurate measurement for large earthquakes (Description 1).

• The Rossi-Forel Scale (D) is an obsolete scale that was one of the first to classify earthquake intensity based on observed effects (Description 4).

• Question 2 of 5 2. Question Which of the following marine erosional landforms is characterized by a steep-sided, narrow inlet formed by the submergence of a glaciated valley? a) Ria b) Fjord c) Dalmatian coast d) Estuary Correct Solution: b) A fjord is a deep, narrow, and elongated sea or lake-drain, with steep land on three sides, formed by the submergence of a glaciated valley. Fjords are created by the process of glaciation, where glaciers carve out U-shaped valleys in mountainous regions. When the glaciers retreat, sea water floods the valleys, creating fjords. They are characterized by steep cliffs and deep waters. Rias, on the other hand, are submerged river valleys formed by the flooding of non-glaciated river valleys, resulting in irregular coastlines with many inlets. The Dalmatian coast refers to a coastline with parallel mountain ridges and valleys submerged, resulting in long, narrow islands parallel to the coast. Estuaries are tidal mouths of large rivers where the tide meets the stream. Incorrect Solution: b) A fjord is a deep, narrow, and elongated sea or lake-drain, with steep land on three sides, formed by the submergence of a glaciated valley. Fjords are created by the process of glaciation, where glaciers carve out U-shaped valleys in mountainous regions. When the glaciers retreat, sea water floods the valleys, creating fjords. They are characterized by steep cliffs and deep waters. Rias, on the other hand, are submerged river valleys formed by the flooding of non-glaciated river valleys, resulting in irregular coastlines with many inlets. The Dalmatian coast refers to a coastline with parallel mountain ridges and valleys submerged, resulting in long, narrow islands parallel to the coast. Estuaries are tidal mouths of large rivers where the tide meets the stream.

#### 2. Question

Which of the following marine erosional landforms is characterized by a steep-sided, narrow inlet formed by the submergence of a glaciated valley?

• c) Dalmatian coast

• d) Estuary

Solution: b)

A fjord is a deep, narrow, and elongated sea or lake-drain, with steep land on three sides, formed by the submergence of a glaciated valley. Fjords are created by the process of glaciation, where glaciers carve out U-shaped valleys in mountainous regions.

When the glaciers retreat, sea water floods the valleys, creating fjords. They are characterized by steep cliffs and deep waters.

Rias, on the other hand, are submerged river valleys formed by the flooding of non-glaciated river valleys, resulting in irregular coastlines with many inlets.

The Dalmatian coast refers to a coastline with parallel mountain ridges and valleys submerged, resulting in long, narrow islands parallel to the coast.

Estuaries are tidal mouths of large rivers where the tide meets the stream.

Solution: b)

When the glaciers retreat, sea water floods the valleys, creating fjords. They are characterized by steep cliffs and deep waters.

Rias, on the other hand, are submerged river valleys formed by the flooding of non-glaciated river valleys, resulting in irregular coastlines with many inlets.

The Dalmatian coast refers to a coastline with parallel mountain ridges and valleys submerged, resulting in long, narrow islands parallel to the coast.

Estuaries are tidal mouths of large rivers where the tide meets the stream.

• Question 3 of 5 3. Question What is the primary reason for the surplus of net radiation balance between 40°N and 40°S latitudes? a) Higher albedo in these regions reflects more solar radiation b) These regions receive more outgoing terrestrial radiation c) There is a higher concentration of greenhouse gases in these regions d) These regions receive more incoming solar radiation than they lose Correct Solution: d) Between 40°N and 40°S latitudes, the Earth experiences a surplus in net radiation balance because these regions receive more incoming solar radiation (insolation) than they emit back into space as terrestrial radiation. The surplus energy is due to the higher angle of the sun’s rays and longer daylight hours, leading to greater absorption of solar energy. This surplus is redistributed towards the poles through atmospheric and oceanic circulation, helping to balance the Earth’s heat budget. Incorrect Solution: d) Between 40°N and 40°S latitudes, the Earth experiences a surplus in net radiation balance because these regions receive more incoming solar radiation (insolation) than they emit back into space as terrestrial radiation. The surplus energy is due to the higher angle of the sun’s rays and longer daylight hours, leading to greater absorption of solar energy. This surplus is redistributed towards the poles through atmospheric and oceanic circulation, helping to balance the Earth’s heat budget.

#### 3. Question

What is the primary reason for the surplus of net radiation balance between 40°N and 40°S latitudes?

• a) Higher albedo in these regions reflects more solar radiation

• b) These regions receive more outgoing terrestrial radiation

• c) There is a higher concentration of greenhouse gases in these regions

• d) These regions receive more incoming solar radiation than they lose

Solution: d)

Between 40°N and 40°S latitudes, the Earth experiences a surplus in net radiation balance because these regions receive more incoming solar radiation (insolation) than they emit back into space as terrestrial radiation.

The surplus energy is due to the higher angle of the sun’s rays and longer daylight hours, leading to greater absorption of solar energy. This surplus is redistributed towards the poles through atmospheric and oceanic circulation, helping to balance the Earth’s heat budget.

Solution: d)

• Question 4 of 5 4. Question Consider the following statements about the factors controlling temperature distribution: Land heats and cools more slowly than water, influencing coastal temperatures. Altitude affects temperature, with higher elevations experiencing higher temperatures. Ocean currents can influence the temperature of nearby coastal regions. The latitude of a place determines the angle of incidence of solar radiation. Which of the statements given above is/are correct? a) 1 and 3 only b) 2 and 4 only c) 3 and 4 only d) 3 only Correct Solution: c) Land heats up and cools down more quickly than water due to its lower specific heat capacity. Water has a higher specific heat capacity, so it heats and cools more slowly. Higher elevations experience lower temperatures due to the decrease in atmospheric pressure and density, which leads to lower temperatures (normal lapse rate). Ocean currents influence the temperature of nearby coastal regions. Warm currents can raise temperatures, while cold currents can lower them. The latitude of a place determines the angle at which solar radiation strikes the Earth. This angle affects the intensity of insolation, with higher latitudes receiving sunlight at a more oblique angle, reducing the intensity. Incorrect Solution: c) Land heats up and cools down more quickly than water due to its lower specific heat capacity. Water has a higher specific heat capacity, so it heats and cools more slowly. Higher elevations experience lower temperatures due to the decrease in atmospheric pressure and density, which leads to lower temperatures (normal lapse rate). Ocean currents influence the temperature of nearby coastal regions. Warm currents can raise temperatures, while cold currents can lower them. The latitude of a place determines the angle at which solar radiation strikes the Earth. This angle affects the intensity of insolation, with higher latitudes receiving sunlight at a more oblique angle, reducing the intensity.

#### 4. Question

Consider the following statements about the factors controlling temperature distribution:

• Land heats and cools more slowly than water, influencing coastal temperatures.

• Altitude affects temperature, with higher elevations experiencing higher temperatures.

• Ocean currents can influence the temperature of nearby coastal regions.

• The latitude of a place determines the angle of incidence of solar radiation.

Which of the statements given above is/are correct?

• a) 1 and 3 only

• b) 2 and 4 only

• c) 3 and 4 only

Solution: c)

• Land heats up and cools down more quickly than water due to its lower specific heat capacity. Water has a higher specific heat capacity, so it heats and cools more slowly.

• Higher elevations experience lower temperatures due to the decrease in atmospheric pressure and density, which leads to lower temperatures (normal lapse rate).

• Ocean currents influence the temperature of nearby coastal regions. Warm currents can raise temperatures, while cold currents can lower them.

• The latitude of a place determines the angle at which solar radiation strikes the Earth. This angle affects the intensity of insolation, with higher latitudes receiving sunlight at a more oblique angle, reducing the intensity.

Solution: c)

• Land heats up and cools down more quickly than water due to its lower specific heat capacity. Water has a higher specific heat capacity, so it heats and cools more slowly.

• Higher elevations experience lower temperatures due to the decrease in atmospheric pressure and density, which leads to lower temperatures (normal lapse rate).

• Ocean currents influence the temperature of nearby coastal regions. Warm currents can raise temperatures, while cold currents can lower them.

• Question 5 of 5 5. Question Consider the following statements regarding oceanic trenches: Oceanic trenches are formed at divergent plate boundaries where new oceanic crust is created. They are the deepest parts of the ocean and are associated with intense volcanic activity and earthquakes. The majority of oceanic trenches are found in the Pacific Ocean. Oceanic trenches play a significant role in the process of subduction and recycling of oceanic crust. Which of the statements given above are correct? a) 1 and 2 only b) 2, 3, and 4 only c) 1, 3, and 4 only d) 2 and 4 only Correct Solution: b) Oceanic trenches are formed at convergent plate boundaries, not divergent ones. Specifically, they occur where an oceanic plate subducts beneath another plate—either another oceanic plate or a continental plate. This process leads to the formation of deep trenches due to the bending of the subducting plate. So, Statement 1 is incorrect. Oceanic trenches are the deepest parts of the ocean floor. The Mariana Trench in the Pacific Ocean, for instance, reaches depths of over 11,000 meters. These trenches are associated with intense geological activity, including powerful earthquakes and volcanic eruptions, due to the movement and interaction of tectonic plates in these zones. The majority of oceanic trenches are indeed found in the Pacific Ocean. This is due to the extensive subduction zones along the Pacific Ring of Fire, where numerous tectonic plates converge, leading to the formation of trenches along the ocean’s margins. Oceanic trenches play a crucial role in the process of subduction, where the oceanic crust is recycled back into the Earth’s mantle. This process is fundamental to plate tectonics and contributes to the dynamic nature of the Earth’s lithosphere. Incorrect Solution: b) Oceanic trenches are formed at convergent plate boundaries, not divergent ones. Specifically, they occur where an oceanic plate subducts beneath another plate—either another oceanic plate or a continental plate. This process leads to the formation of deep trenches due to the bending of the subducting plate. So, Statement 1 is incorrect. Oceanic trenches are the deepest parts of the ocean floor. The Mariana Trench in the Pacific Ocean, for instance, reaches depths of over 11,000 meters. These trenches are associated with intense geological activity, including powerful earthquakes and volcanic eruptions, due to the movement and interaction of tectonic plates in these zones. The majority of oceanic trenches are indeed found in the Pacific Ocean. This is due to the extensive subduction zones along the Pacific Ring of Fire, where numerous tectonic plates converge, leading to the formation of trenches along the ocean’s margins. Oceanic trenches play a crucial role in the process of subduction, where the oceanic crust is recycled back into the Earth’s mantle. This process is fundamental to plate tectonics and contributes to the dynamic nature of the Earth’s lithosphere.

#### 5. Question

Consider the following statements regarding oceanic trenches:

• Oceanic trenches are formed at divergent plate boundaries where new oceanic crust is created.

• They are the deepest parts of the ocean and are associated with intense volcanic activity and earthquakes.

• The majority of oceanic trenches are found in the Pacific Ocean.

• Oceanic trenches play a significant role in the process of subduction and recycling of oceanic crust.

Which of the statements given above are correct?

• a) 1 and 2 only

• b) 2, 3, and 4 only

• c) 1, 3, and 4 only

• d) 2 and 4 only

Solution: b)

• Oceanic trenches are formed at convergent plate boundaries, not divergent ones. Specifically, they occur where an oceanic plate subducts beneath another plate—either another oceanic plate or a continental plate. This process leads to the formation of deep trenches due to the bending of the subducting plate. So, Statement 1 is incorrect.

• Oceanic trenches are the deepest parts of the ocean floor. The Mariana Trench in the Pacific Ocean, for instance, reaches depths of over 11,000 meters. These trenches are associated with intense geological activity, including powerful earthquakes and volcanic eruptions, due to the movement and interaction of tectonic plates in these zones.

• The majority of oceanic trenches are indeed found in the Pacific Ocean. This is due to the extensive subduction zones along the Pacific Ring of Fire, where numerous tectonic plates converge, leading to the formation of trenches along the ocean’s margins.

• Oceanic trenches play a crucial role in the process of subduction, where the oceanic crust is recycled back into the Earth’s mantle. This process is fundamental to plate tectonics and contributes to the dynamic nature of the Earth’s lithosphere.

Solution: b)

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