KSEEB Solutions For Class 8 Social Science Geography Chapter 1 The Earth – Our Living Planet

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KSEEB Solutions Class 8 Geography Chapter 1 The Earth – Our Living Planet Points To Remember

The Earth is the home for all forms of life like plants, animals, and human beings because of its suitable distance from the Sun, range of temperature, life-supporting gases, atmosphere, water cycle, etc. Our Earth is called by many names.

Some of them are ‘Living Planet’, ‘Unique Planet’, ‘Watery Planet’, and ‘Blue Planet’. The Earth is the fifth largest planet in the Sun’s family. The diameter of the Earth is approximately 4 times greater than the Moon and it is around 107 times less than that of the Sun.

The Earth’s shape is often described as Geoid, which literally means ‘Earth shaped’, or ‘Oblate spheroid’. The Earth is flattened at the poles and bulges at the equator.

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The land bodies of the Earth are known as Continents. There are seven continents, namely Asia, Africa, North America, South America, Antarctica, Europe, and Australia.

Asia is the largest continent in the world while Australia is the smallest continent.

The large water bodies on the Earth are called oceans. There are four major oceans. They are the Pacific Ocean, the Atlantic Ocean, the Indian Ocean, and the Arctic ocean.

The Pacific is the largest and deepest ocean while the Arctic is the smallest and shallowest ocean.

The Northern Hemisphere has 60% of land and 40% of water. Therefore it is called the ‘Land Hemisphere’.

On the other hand, there is 81% of water and 19% of land in the Southern Hemisphere and so it is called the ‘ Water Hemisphere’.

The Earth is spherical in shape. Therefore it is difficult to locate the places, and the direction and calculate the distance between places.

Latitude is an imaginary line that joins all the places which have the same angular distance north or south of the equator.

The Equator is the longest line of latitude known as the Great circle.

The imaginary lines that intersect the equator at the right angle joining the north and south are called longitudes.

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Lines of longitude are called Meridians (Meir- mid and Indian-day) because all places along the same meridian of longitude experience noon or mid-day at the same time.

The meridian passing through Greenwich (England) has been chosen as Prime Meridian. It is marked as 0 longitudes.

The time according to the longitude of a place or according to the position of the Sun at that place is known as the Local time.

When the Sun is shining vertically over the longitude it is 12 noon at that place. All places situated on the same meridian have the same local time.

In India, 82 Via East longitude is considered the Standard Meridian of the country. It passes through Allahabad of Uttar Pradesh.

The time based on this Meridian is called the Indian Standard Time (1ST). It is 5 hours and 30 minutes ahead of GMT.

The problem of time in countries of the world was solved first by the standard time and then by the zonal time.

Any ship crossing this line from the west (Asia to North America) to the east takes a day twice while the ship crossing this line from the east (North America to Asia) to the west drops one day.

KSEEB Solutions For Class 8 Social Science Geography Chapter 1 The Earth Our Living Planet

Kseeb Solutions Class 8 Geography Chapter 1 Notes

The Earth – Our Living Planet Exercises

Fill in the blanks with a suitable answer:

  1. The total geographical area of the Earth is 510 million Sq. Km.
  2. The shape of the Earth is Geoid.
  3. The equatorial and polar diameters of the Earth are 12756 and 12714 Kms.
  4. The 23 VioNorth latitudes are called as Tropic of Cancer
  5. The Indian Standard Time is based on 82 1/20 East longitude.

Answer the following questions briefly:

Question 1. Why is the Earth called the ‘Living Planet’?
Answer: The Earth is the home for all forms of life like plants, animals, and human beings because of its suitable distance from the Sun, range of temperature, life-supporting gases, atmosphere, water cycle, etc.

Question 2. Why are the Northern and Southern hemispheres called Land and Water Hemispheres?
Answer: The Northern Hemisphere has 60% of land and 40% of water. Therefore it is called the ‘Land Hemisphere’. On the other hand, there is 81 % of water and 19% of land in the Southern Hemisphere and so it is called the ‘Water Hemisphere’.

Question 3. What are latitudes and longitudes?
Answer: Latitude is an imaginary line that joins all the places which have the same angular distance north or south of the equator. The imaginary lines that intersect the equator at the right angle joining the north and south are called longitudes.

Question 4. Mention the difference between local time and standard time.
Answer: The time according to the longitude of a place or according to the position of the Sun at that place is known as the Local time. The uniform time which is followed throughout a country is called the Standard Time of that country.

Kseeb Class 8 Geography Chapter 1 Important Questions

Question 5. What is the International Date Line?
Answer: A line passing through 180meridian diametrically opposite to the GM.T was adopted as the point where circumnavigators should make adjustments.

The Earth – Our Living Planet Define the following:

Unique planet: The Earth is the home for all forms of life like plants, animals, and human beings because of its suitable distance from the Sun, range of temperature, life-supporting gases, atmosphere, water cycle, etc.

Size of the Earth: The Earth is the fifth largest planet in the Earth’s Sun’s family. The diameter of the Earth is approximately 4 times greater than the Moon and it is around 107 times less than that of the Sun

Geoid: The Earth’s shape is often described as Geoid, which literally means ‘Earth shaped’, or ‘Oblate spheroid’. The Earth is flattened at the poles and bulges at the equator.

Continents: The land bodies of the Earth are known as Continents.

Prime Meridian: The meridian passing through Greenwich (England) has been chosen as Prime Meridian. It is marked as 0°longitude.

Class 8 Geography Chapter 1 The Earth Our Living Planet Kseeb

Indian Standard Time: In India, 82140 East longitude is considered the Standard Meridian of the country. It passes through Allahabad of Uttar Pradesh. The time based on this Meridian is called the Indian Standard Time (IST). It is 5 hours and 30 minutes ahead of GMT.

The Earth – Our Living Planet Terms to Remember:

Living Planet: The Earth is the home for all forms of life like plants, animals, and human beings because of its suitable distance from the Sun, range of temperature, life-supporting gases, atmosphere, water cycle, etc.

Equator: The Equator (0) is the longest line of latitude known as the Great circle. It is equal to the circumference of the Earth.

Arctic circle: 66’A’North latitude is called as Antarctic Circle

Antarctic circle: 6614′ South latitude is called as Antarctic Circle.

Zonal Time: The whole globe is divided into 24 such time zones so that the time in each zone differs from the other by only one hour.

International date line: A line passing through 180 meridians diametrically opposite to the GMT was adopted as the point where circumnavigators should make adjustments.

The Earth – Our Living Planet Additional Questions And Answers

Choose the correct alternative and Write the complete answer along with its alphabet in the sheet provided:

Question 1. The third planet from the Sun is

  1. Earth
  2. Mars
  3. Mercury
  4. Venus

Answer: 1. Earth

Question 2. The fifth-largest planet in Sun’s family is

  1. Mars
  2. Earth
  3. Jupiter
  4. Uranus

Answer: 2. Earth

Question 3. The Earth’s shape is often described as

  1. Circle
  2. Spherical
  3. Geoid
  4. Cylindrical

Answer: 3. Geoid

Question 4. The land bodies of the Earth are known as

  1. Continents
  2. Countries
  3. Desert
  4. Plains

Answer: 1. Continents

Kseeb Class 8 Geography Chapter 1 The Earth Our Living Planet Question Answers

Question 5. The largest continent in the world is

  1. SouthAmerica
  2. Africa
  3. North America
  4. Asia

Answer: 4. Asia

Question 6. The smallest continent in the world is

  1. Antarctica
  2. Europe
  3. Australia
  4. SouthAmerica

Answer: 3. Australia

Question 7. The round distance between two latitudes is

  1. 110.4kms
  2. 111.4kms
  3. 121.4kms
  4. 105.4kms

Answer: 1.110.4kms

KSEEB Geography Chapter 1 Class 8 Multiple Choice Questions 

Question 8. On the equator the distance between two consecutive meridians is

  1. 111.4kms
  2. 111 km
  3. 121.4kms
  4. 105.4kms

Answer: 2. 111 km

Question 9. The longest latitude is

  1. Tropic of Cancer
  2. Tropic of Capricorn
  3. Arctic Circle
  4. The Equator

Answer: 4. The Equator

Question 10. The longest longitude is

  1. Tropic of Cancer
  2. Tropic of Capricorn
  3. Greenwich Meridian
  4. The Equator

Answer: 3. Greenwich Meridian

Fill in the blanks with a suitable answer:

  1. The largest and deepest ocean is The Pacific Ocean
  2. The smallest and shallowest ocean is the Arctic Ocean
  3. The earth is rotating on its axis and completes one rotation in 24 hours.
  4. The earth takes 4 minutes for rotation between two latitudes.
  5. 82 1/20 East longitude is considered the Standard Meridian of India.
  6. Standard Meridian of India passes through Allahabad
  7. The country which has the highest number of longitudes is Russia.

Answer the following questions in three to four sentences each:

Question 1. Name the seven continents of the world.
Answer: There are seven continents, namely Asia, Africa, North America, South America, Antarctica, Europe, and Australia.

Question 2. Name the four major oceans of the world,
Answer: The Pacific Ocean, the Atlantic Ocean, the Indian Ocean, and the Arctic Ocean are major oceans of the world.

Question 3. How do we understand the location of a place, the direction, and the distance between places?
Answer: To know the position, distance, and direction of east and west or north and south, a network of lines is drawn on the globe. These are known as lines of latitudes and longitudes.

Kseeb Class 8 Social Science Geography Chapter 1 Exercise Answers

Question 4. Name the important latitudes drawn on the globe.
Answer:
Important latitudes are:

0 latitude-Equator or Great Circle.

23 1/20 North latitude – Tropic of Cancer.

23 1/20 South latitude – Tropic of Capricorn

66 1/20 North latitude – Arctic Circle.

66 1/20 South latitude – Antarctic Circle.

900North – North pole.

900 South – South pole.

Question 5. Why Lines of longitude are called Meridians?
Answer: Lines of longitude are called Meridians (‘meri’- mid and ‘Indian-day) because all places along the same meridian of longitude experience noon or mid*day at the same time.

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