Exercise : Geography - General Questions
✔ Geography -
General Questions
1.
Which layer of the atmosphere contains the Ozone layer?
View Answer
Answer: Option B
Explanation:
Explanation:
1. The Earth's atmosphere is divided into layers: Troposphere, Stratosphere, Mesosphere, Thermosphere, and Exosphere.
2. The Stratosphere is the second layer, extending from about 10 km to 50 km above the surface.
3. The Ozone Layer ($O_3$) is concentrated in the lower portion of the Stratosphere.
4. Its primary function is to absorb the majority of the Sun's harmful ultraviolet (UV) radiation, protecting life on Earth.
2. The Stratosphere is the second layer, extending from about 10 km to 50 km above the surface.
3. The Ozone Layer ($O_3$) is concentrated in the lower portion of the Stratosphere.
4. Its primary function is to absorb the majority of the Sun's harmful ultraviolet (UV) radiation, protecting life on Earth.
2.
The 'Roaring Forties' are:
View Answer
Answer: Option B
Explanation:
Explanation:
1. The 'Roaring Forties' refers to the region between latitudes $40^{\circ}$ and $50^{\circ}$ in the Southern Hemisphere.
2. This area is characterized by strong, persistent westerly winds.
3. These winds are particularly powerful because the Southern Hemisphere has very little landmass at these latitudes to slow the wind down through friction.
4. Sailors named them 'Roaring' due to the loud noise and high velocity of the winds in this belt.
2. This area is characterized by strong, persistent westerly winds.
3. These winds are particularly powerful because the Southern Hemisphere has very little landmass at these latitudes to slow the wind down through friction.
4. Sailors named them 'Roaring' due to the loud noise and high velocity of the winds in this belt.
3.
What is the primary cause of the 'Equatorial Counter Current'?
View Answer
Answer: Option A
Explanation:
Explanation:
1. Trade winds blow surface water from east to west across the Atlantic and Pacific oceans near the equator.
2. This causes water to 'pile up' on the western sides of the ocean basins.
3. Gravity and the Earth's rotation (Coriolis effect) cause some of this accumulated water to flow back eastward in a narrow band.
4. This eastward flow, occurring between the North and South Equatorial Currents, is known as the Equatorial Counter Current.
2. This causes water to 'pile up' on the western sides of the ocean basins.
3. Gravity and the Earth's rotation (Coriolis effect) cause some of this accumulated water to flow back eastward in a narrow band.
4. This eastward flow, occurring between the North and South Equatorial Currents, is known as the Equatorial Counter Current.
4.
'Moho' Discontinuity separates:
View Answer
Answer: Option C
Explanation:
Explanation:
1. Discontinuities in the Earth's interior are boundaries where seismic waves change velocity abruptly.
2. The Mohorovicic discontinuity, commonly called 'Moho', was discovered by Andrija Mohorovicic in 1909.
3. It marks the boundary where the Earth's brittle crust meets the denser, plastic mantle.
4. Below this line, the velocity of P-waves increases significantly.
2. The Mohorovicic discontinuity, commonly called 'Moho', was discovered by Andrija Mohorovicic in 1909.
3. It marks the boundary where the Earth's brittle crust meets the denser, plastic mantle.
4. Below this line, the velocity of P-waves increases significantly.
5.
Which type of rainfall occurs when warm, moist air is forced to rise over a mountain range?
View Answer
Answer: Option C
Explanation:
Explanation:
1. When moist air encounters a mountain, it is forced to ascend the windward slope.
2. As the air rises, it expands and cools adiabatically.
3. Once the air reaches its dew point, water vapor condenses to form clouds and precipitation.
4. This specific process is called 'Orographic' (mountain-related) rainfall.
2. As the air rises, it expands and cools adiabatically.
3. Once the air reaches its dew point, water vapor condenses to form clouds and precipitation.
4. This specific process is called 'Orographic' (mountain-related) rainfall.
6.
The 'Great Barrier Reef' is located off the coast of:
View Answer
Answer: Option B
Explanation:
Explanation:
1. The Great Barrier Reef is the world's largest coral reef system, composed of over 2,900 individual reefs.
2. It is located in the Coral Sea.
3. Geographically, it lies off the coast of Queensland, Australia.
4. It is so large that it can be seen from outer space and is a UNESCO World Heritage site.
2. It is located in the Coral Sea.
3. Geographically, it lies off the coast of Queensland, Australia.
4. It is so large that it can be seen from outer space and is a UNESCO World Heritage site.
7.
Which planet is known as the 'Earth’s Twin'?
View Answer
Answer: Option B
Explanation:
Explanation:
1. Venus is frequently referred to as Earth's twin.
2. This nickname is based on the similarities in size, mass, and composition between the two planets.
3. Venus's diameter is about 95% of Earth's, and its mass is about 81% of Earth's.
4. However, unlike Earth, Venus has an extremely thick, toxic atmosphere that creates a runaway greenhouse effect.
2. This nickname is based on the similarities in size, mass, and composition between the two planets.
3. Venus's diameter is about 95% of Earth's, and its mass is about 81% of Earth's.
4. However, unlike Earth, Venus has an extremely thick, toxic atmosphere that creates a runaway greenhouse effect.
8.
Isotherms are lines joining places having equal:
View Answer
Answer: Option C
Explanation:
Explanation:
1. Isopleths are lines on a map connecting points with equal values of a specific variable.
2. The prefix 'Iso-' means equal, and 'therm' refers to temperature.
3. Therefore, Isotherms are used to represent the distribution of temperature across a geographic area.
4. Other examples include Isobars (pressure) and Isohyets (rainfall).
2. The prefix 'Iso-' means equal, and 'therm' refers to temperature.
3. Therefore, Isotherms are used to represent the distribution of temperature across a geographic area.
4. Other examples include Isobars (pressure) and Isohyets (rainfall).
9.
The point on the Earth's surface directly above the focus of an earthquake is the:
View Answer
Answer: Option A
Explanation:
Explanation:
1. An earthquake starts at a point deep within the Earth where the rock breaks; this point is called the 'Focus' or 'Hypocenter'.
2. Seismic waves radiate outward from the focus in all directions.
3. The point on the Earth's surface that is vertically above the focus is called the 'Epicenter'.
4. The epicenter usually experiences the strongest ground shaking during an earthquake.
2. Seismic waves radiate outward from the focus in all directions.
3. The point on the Earth's surface that is vertically above the focus is called the 'Epicenter'.
4. The epicenter usually experiences the strongest ground shaking during an earthquake.
10.
What is the main composition of the Earth's Core?
View Answer
Answer: Option C
Explanation:
Explanation:
1. The Earth's interior is chemically divided into the Crust, Mantle, and Core.
2. The Core is the innermost layer, starting at a depth of about 2,900 km.
3. It is primarily composed of heavy metals, specifically Iron ($Fe$) and Nickel ($Ni$).
4. Because of these components, the core is often referred to as the 'Nife' layer (Ni for Nickel, Fe for Ferrous/Iron).
2. The Core is the innermost layer, starting at a depth of about 2,900 km.
3. It is primarily composed of heavy metals, specifically Iron ($Fe$) and Nickel ($Ni$).
4. Because of these components, the core is often referred to as the 'Nife' layer (Ni for Nickel, Fe for Ferrous/Iron).