Download App

Geography Que-Ans: [5 Marks Each]

Earth's Origin and Evolution · Gujarat Board (GSEB) STD 11 Arts (GSEB - English Medium). 14 questions.

Questions

Que-Ans: [5 Marks Each]

🎯

Test yourself on this topic

14 questions · timed · auto-graded

Question 15 Marks
How did the atmosphere and hydrosphere develop ? Write in detail.
Answer
The different phases of the emergence and development of the atmosphere and water on Earth are as follows.
First stage: The initial atmosphere on Earth had more hydrogen, and helium gases.
Due to the solar wind, the primitive gases on the earth were removed. This was the first stage of the evolution of the atmosphere.
Stage II: The earth cools down periodically, causing its gases and water vapor to escape.
This process is called air emissions. Atmospheric water vapor, nitrogen, carbon dioxide, methane, and ammonia were particularly high in the atmosphere.
Phase III: In this phase, condensation of steam became possible due to the cooling of the earth. So that it began to rain.
Carbon dioxide in the atmosphere melted into rainwater, causing the earth's temperature to drop and torrential rains to fall.
The oceans and seas formed as rainwater collected in the deepest pits on earth.
The oceans formed $500$ million years after the origin of the earth.
Millions of years later, the evolution of life began.
The process of photosynthesis evolved $250$ to $500$ million years ago.
Organisms have long been confined to the oceans.
Due to photosynthesis, the oceans became saturated with oxygen and the proportion of oxygen in the atmosphere became only $200$ million years ago.
View full question & answer→
Question 25 Marks
Describe the of Big Bang Theory.
Answer
The Big Bang is currently considered more modern in terms of its emergence in the universe.
This theory is also called the ideology of the expanding universe. This is an evolutionary theory.
The Belgian scholar Jorge Limitre has given the theory of the Big Bang.
In $1920,$ an astronomer named Edwin Hubble announced that the universe was expanding.
From time to time galaxies are constantly moving away from each other.
According to the Big Bang theory, various phases regarding the expansion of the universe are taking place in the following stages.
The objects from which the universe was formed were in the form of a small sphere. In one place they were stationary.
These primitive substances were extremely fine and had very high temperatures and densities.
In this very small sphere, a huge explosion caused the objects in it to disperse into space.
The Big Bang may have occurred about $13.7$ billion years ago today.
More than a second after the massive explosion, particles of primitive matter may have spread through space and expanded into the universe.
The expansion of the universe continues today. But its pace has slowed.
The first atom would have originated in just three minutes with the Big Bang. During the three million years since the Big Bang, temperatures have dropped to $4500$ degrees Kelvin and molecular matter has been formed.
View full question & answer→
Question 35 Marks
What is the solar System ? Discuss Earth as a member of the solar System.
Answer
The solar family is a family of planets, satellites, asteroids, meteors and comets.
In addition to the Sun, it includes Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus and Neptune.
In addition, more than $173$ satellites, more than $45000$ asteroids, comets and meteors are collectively called the solar system.
As a planet of the earth: The earth which is the abode of man is a planet.
The thickness of the surrounding atmosphere layer is about $800$ to $1000 \ km.$
It is a planet illuminated by Mars and Venus, about $150$ million km from the Sun.
It has a polar diameter of $12714 \ km$ and an equatorial diameter of $12756 \ km.$
Earth takes $365.25$ days rather than one orbit of the Sun.
A bull rotates around its axis from west to east in $23.9$ hours. Its axis is tilted at an angle of $66.5$ with an orbital orbit.
The Earth's atmosphere contains gases such as nitrogen, oxygen, and small amounts of carbon dioxide, hydrogen, and ozone.
Earth's atmosphere protects us from meteors.
The ozone layer absorbs the ultraviolet radiation from the sun and sustains the organism.
The only satellite of the Earth is the Moon where the living creatures do not exist.
View full question & answer→
Question 45 Marks
Describe the Earths interior.
Answer
The Earth is believed to have formed about $4.5$ billion years ago.
At the time of origin it was in extremely hot aerated form. The temperature usually rises by $1\ C$ at a depth of $32\ m$ from the earth's surface toward the center.
Near the surface of the earth is a thin layer of rocky rocks. Which is called solidification.
It has two subdivisions.
$(1)$ Bhukvach and $(2)$ Geosynthetic Sial layer of granite rocks we are composed of layer of basalt rocks in Sai.
 
Below the cube is a mantle or mantle to a depth of $2880 \ km.$
It is called the earth.
It is also called the central metal.
Its diameter is $6020 \ km.$
The nickel and iron minerals are predominant in this layer, so it is called neph.
The gravitational force of the earth is due to this metal. Land forms are formed as a result of oceanic processes and interactions that take place underground.
View full question & answer→
Question 55 Marks
Explain Nebular Theory.
Answer
  • The concept was introduced in $1755$ by the German philosopher Emanuel Kant.
  • According to him, billions of years ago, space had cold and motionless gaseous clouds.
  • The reciprocal gravity of the gaseous gases caused friction, and the gaseous cloud heated up and transformed into a nebula rotating on its imaginary axis.
  • Kant's ideology was refined by the French mathematician Laplace in $1796.$ He introduced the idea of ​​a very hot nebula from the beginning.
  • Heat was constantly emitted from the surface of this nebula.
  • As a result, its heat gradually decreased.
  • It slowly cooled down so its surface parts began to shrink and thicken.
  • The centrifugal force began to grow rather than its centrifugal force.
  • Due to the centrifugal force, a series of gaseous particles were released from the surface of the nebula from time to time and thrown into space.
  • This mass of aerobic matter began to revolve around the nebula itself. Due to the gradual combination and aggregation of these gaseous substances, the annular gaseous substances were transformed into solid spheres.
  • Which are known as planets.
  • This whole process was repeated before some of the planets condensed to form satellites from some of the planets.
View full question & answer→
Question 65 Marks
Discuss the Tidal Hypothesis explaining the Earths origin.
Answer
  • The theory of tides for the origin of the solar family was introduced in $1919$ by English geographers James Jeans and Jefferies.
  • According to this theory, a traveling star passed close to our Adisurya with a giant atmosphere.
  • It was many times larger than the sun.
  • The tide rises on the surface of the sun due to its gravitational force.
  • As the traveling star got closer and closer to the sun, the tide rose.
  • The aerial mass in the shape of a cigar and a cigar attracted the tourist star and released it from the sun.
  • As the traveling star moved away, the force of gravity diminished. The part separated from the sun gained rotation and orbital motion due to the gravity of the sun.
  • Over time, the shape of the cigar began to change.
View full question & answer→
Question 75 Marks
Discuss the myths about the origin of the earth.
Answer
  • Beliefs and speculations about the origin of the earth are found in various scriptures.
  • In ancient times the people of many countries imagined the shape of the earth to be like an egg. The ancient belief of the Hindu people was that Brahma remained meditative for ages and he made a golden egg.
  • In the country of Koesia, the earth is considered to be the egg produced by the sun god.
  • This egg is the same shield shaped as the Earth in the Scandinavian countries.
  • The shield-like earth rests on a tree.
  • The root of this tree is the abyss and the canopy above it is heaven.
  • According to Hindu theology, there is a big tortoise.
  • This giant tortoise has four large elephants on its back.
  • On their backs lies an inverted semi-circular earth.
  • At a higher altitude of the earth is the sun.
  • Some people believed that someone was resting on the earth with a huge stronghold of a demon. As long as that monster is lying.
  • Is very nice It doesn't matter.
  • But when he wakes up, an earthquake will start.
  • Some people believed that the earth rested on three giant whales. Also, the ancients believed that there might be a difficult, intricate, and intelligent device hidden across the sky.
  • This machine probably resembles a clock machine.
  • In it, huge, toothed wheels, perhaps even larger than the mountains, spin gently.
  • So the whole sky, including the stars, turns to earth.
  • Our ancestors believed that the earth rested on the head of Sheshnag.
  • Sheshnag washes his head so Dhara Dhruj wakes up.
  • Furthermore, some believed that the sun revolved around the earth.
  • So day happens night.
  • These were our ancient beliefs.
  • It is believed that the Earth was in the form of a warm aerial sphere when it originated about four and a half billion years ago.
  • Over time, its outer surface cooled, and a thin solid crust formed on Earth.
  • Earth is the only planet in the solar system on which life exists.
  • The origin of the earth is connected with the origin of the solar system.
  • There are many myths, beliefs and theories about the birth of the Earth, such as nebulae, astronomy, tides, monolithic theory, zygote theory, nebula cloud theory, explosive star theory, etc.
  • Every theory has been controversial due to lack of necessary support or evidence.
View full question & answer→
Question 85 Marks
What is a solar family? Co-explain the figure of the solar family.
Answer
  • Solar family: The constellation of planets, satellites, asteroids, meteors and comets, which is dominated by the sun.
  • In addition to the eight planets in the solar system, more than $173$ satellites, about $45000$ asteroids, comets, meteors, etc. are collectively called the solar family or solar system.
View full question & answer→
Question 95 Marks
Describe the internal structure of the earth.
Answer
  • The Earth is believed to have formed about $4.5$ billion years ago.
  • At the time of origin it was in extremely hot aerated form. The temperature usually rises by $1\ C$ at a depth of $32\ m$ from the earth's surface toward the center.
  • Near the surface of the earth is a thin layer of rocky rocks. Which is called solidification.
  • It has two subdivisions.
$(1)$ Bhukvach and $(2)$ Geosynthetic Sial layer of granite rocks we are composed of layer of basalt rocks in Sai.
  • Below the cube is a mantle or mantle to a depth of $2880\ km.$
  • It is called the earth.
  • It is also called the central metal.
  • Its diameter is $6020\ km.$
  • The nickel and iron minerals are predominant in this layer, so it is called neph.
  • The gravitational force of the earth is due to this metal. Land forms are formed as a result of oceanic processes and interactions that take place underground.
View full question & answer→
Question 105 Marks
“Nebulaism” - Explain.
Answer
  • The concept was introduced in $1755$ by the German philosopher Emanuel Kant.
  • According to him, billions of years ago, space had cold and motionless gaseous clouds.
  • The reciprocal gravity of the gaseous gases caused friction, and the gaseous cloud heated up and transformed into a nebula rotating on its imaginary axis.
  • Kant's ideology was refined by the French mathematician Laplace in $1796.$ He introduced the idea of ​​a very hot nebula from the beginning.
  • Heat was constantly emitted from the surface of this nebula.
  • As a result, its heat gradually decreased.
  • It slowly cooled down so its surface parts began to shrink and thicken.
  • The centrifugal force began to grow rather than its centrifugal force.
  • Due to the centrifugal force, a series of gaseous particles were released from the surface of the nebula from time to time and thrown into space.
  • This mass of aerobic matter began to revolve around the nebula itself. Due to the gradual combination and aggregation of these gaseous substances, the annular gaseous substances were transformed into solid spheres.
  • Which are known as planets.
  • This whole process was repeated before some of the planets condensed to form satellites from some of the planets.
View full question & answer→
Question 115 Marks
Discuss tidalism explaining the origin of the earth.
Answer
  • The theory of tides for the origin of the solar family was introduced in $1919$ by English geographers James Jeans and Jefferies.
  • According to this theory, a traveling star passed close to our Adisurya with a giant atmosphere.
  • It was many times larger than the sun.
  • The tide rises on the surface of the sun due to its gravitational force.
  • As the traveling star got closer and closer to the sun, the tide rose.
  • The aerial mass in the shape of a cigar and a cigar attracted the tourist star and released it from the sun.
  • As the traveling star moved away, the force of gravity diminished. The part separated from the sun gained rotation and orbital motion due to the gravity of the sun.
  • Over time, the shape of the cigar began to change.
View full question & answer→
Question 125 Marks
Discuss the myths about the origin of the earth.
Answer
  • Beliefs and speculations about the origin of the earth are found in various scriptures.
  • In ancient times the people of many countries imagined the shape of the earth to be like an egg. The ancient belief of the Hindu people was that Brahma remained meditative for ages and he made a golden egg.
  • In the country of Koesia, the earth is considered to be the egg produced by the sun god.
  • This egg is the same shield shaped as the Earth in the Scandinavian countries.
  • The shield-like earth rests on a tree.
  • The root of this tree is the abyss and the canopy above it is heaven.
  • According to Hindu theology, there is a big tortoise.
  • This giant tortoise has four large elephants on its back.
  • On their backs lies an inverted semi-circular earth.
  • At a higher altitude of the earth is the sun.
  • Some people believed that someone was resting on the earth with a huge stronghold of a demon. As long as that monster is lying.
  • Is very nice It doesn't matter.
  • But when he wakes up, an earthquake will start.
  • Some people believed that the earth rested on three giant whales. Also, the ancients believed that there might be a difficult, intricate, and intelligent device hidden across the sky.
  • This machine probably resembles a clock machine.
  • In it, huge, toothed wheels, perhaps even larger than the mountains, spin gently.
  • So the whole sky, including the stars, turns to earth.
  • Our ancestors believed that the earth rested on the head of Sheshnag.
  • Sheshnag washes his head so Dhara Dhruj wakes up.
  • Furthermore, some believed that the sun revolved around the earth.
  • So day happens night.
  • These were our ancient beliefs.
  • It is believed that the Earth was in the form of a warm aerial sphere when it originated about four and a half billion years ago.
  • Over time, its outer surface cooled, and a thin solid crust formed on Earth.
  • Earth is the only planet in the solar system on which life exists.
  • The origin of the earth is connected with the origin of the solar system.
  • There are many myths, beliefs and theories about the birth of the Earth, such as nebulae, astronomy, tides, monolithic theory, zygote theory, nebula cloud theory, explosive star theory, etc.
  • Every theory has been controversial due to lack of necessary support or evidence.
View full question & answer→
Question 135 Marks
What is a solar family? Co-explain the figure of the solar family.
Answer
  • Solar family: The constellation of planets, satellites, asteroids, meteors and comets, which is dominated by the sun.
  • In addition to the eight planets in the solar system, more than $173$ satellites, about $45000$ asteroids, comets, meteors, etc. are collectively called the solar family or solar system.
View full question & answer→
Question 145 Marks
What is a solar family? Discuss Earth as a planet as a member of the solar family.
Answer
The solar family is a family of planets, satellites, asteroids, meteors and comets.
In addition to the Sun, it includes Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus and Neptune.
In addition, more than $173$ satellites, more than $45000$ asteroids, comets and meteors are collectively called the solar system.
As a planet of the earth: The earth which is the abode of man is a planet.
The thickness of the surrounding atmosphere layer is about $800$ to $1000 \ km.$
It is a planet illuminated by Mars and Venus, about $150$ million km from the Sun.
It has a polar diameter of $12714 \ km$ and an equatorial diameter of $12756 \ km$.
Earth takes $365.25$ days rather than one orbit of the Sun.
A bull rotates around its axis from west to east in $23.9$ hours. Its axis is tilted at an angle of $66.5$ with an orbital orbit.
The Earth's atmosphere contains gases such as nitrogen, oxygen, and small amounts of carbon dioxide, hydrogen, and ozone.
Earth's atmosphere protects us from meteors.
The ozone layer absorbs the ultraviolet radiation from the sun and sustains the organism.
The only satellite of the Earth is the Moon where the living creatures do not exist.
View full question & answer→
Generate Paper FreeAll Earth's Origin and Evolution topics
Que-Ans: [5 Marks Each] - Geography STD 11 Arts Questions - Vidyadip