Samacheer Kalvi 8th Social Science Geography Unit 7 Book Back Answers:

Samacheer Kalvi 8th Standard New Social Science Book Back 1 Mark and 2 Mark Question & Answers PDF uploaded and available below. Class 8 New Syllabus 2021 to 2022 Book Back Question & Answer available for both English and Tamil Mediums. Class 8 Social Geography Book Unit 7 – Exploring Continents Africa, Australia, and Antarctica Answers/Solutions are provided on this page. 8th Std Social Science History Book portion consists of 8 units, Geography Book portion consists of  8 units, Civics book portion consists of 7 units, and Economics book portion consists of 2 units, All Social Book Back One, and Two Mark Solutions are given below.

Check Unit wise and  Samacheer Kalvi 8th Social Science Book Back Solutions Answers PDF format for Free Download. English, Tamil, Maths, Science, and Social Science Book Back Question and Answer is available in PDF. Class 8th Standard Social Book Back Answers PDF. Check Social Science – History, Geography, Civics, Economics Answers below. See below for the 8th New Syllabus Book Back guide/Answers free PDF download:

Samacheer Kalvi 8th Social Science Book Back Solutions PDF:

8th Social Subject 1 Mark and 2 Mark Solutions PDF available below. Click the Download option to download the book back 1 Mark & 2 Mark questions and answers. Take the printout and use it for exam purposes. Samacheer Kalvi 8th Geography Unit 7 Answers are given below.

Geography Book Back Answers

Unit 7 – Exploring Continents Africa, Australia, and Antarctica

I. Choose the best answer:

1. The southernmost tip of Africa is …………..
(a) Cape Blanca
(b) Cape Agulhas
(c) Cape of Good Hope
(d) Cape Town
Answer: (b) Cape Agulhas

2. The manmade canal through an isthmus betw een Egypt and Sinai Peninsula is
(a) Panama Canal
(b) Aswan Canal
(c) Suez Canal
(d) Albert Canel
Answer: (c) Suez Canal

3. In respect of the Mediterranean climate, consider the following statements and choose the correct answer.
(1) The average rainfall is 15 cm
(2) The summers are hot and dry; winters are rainy.
(3) Winters are cool and dry; Summers are hot and wet
(4) Citrus fruits are grown
(a) 1 is correct
(b) 2 and 4 are correct
(c) 3 and 4 are correct
(d) All are correct
Answer: (b) 2 and 4 are correct

4. The range which separates the west and east flowing rivers in Australia is
(a) Great Dividing Range
(b) Himalayan range
(c) Flinders range
(d) Mac Donnell range
Answer: (a) Great Dividing Range

5. Kalgoorile is famous for …………….. mining.
(a) Diamond
(b) Platinum
(c) Silver
(d) Gold
Answer: (d) Gold

II. Fill in the Blanks:

1. Atlas Mountain is located in …………….. continent.
2. …………….. is the first Indian research station in Antarctica.
3. ………….. is the highest peak in Africa.
4. A temperature grassland of Australia is called …………..
5. ………….. is the first Indian research station in Antarctica.

Answer:

1. Northwest Africa
2. Mt. Kilimanjaro
3. Eucalyptus
4. Downs
5. Dakshin Gangotri

II. Match the following:

1. Pinnacle – Equatorial forest
2. Krill – salt lake
3. Ostrich – small redfish
4. Lake Eyre – flightless bird
5. Jewel of the earth – Pointed limestone pillars

Answer:

1. Pinnacle – Pointed limestone pillars
2. Krill – small redfish
3. Ostrich – flightless bird
4. Lake Eyre – salt lake
5. Jewel of the earth – Equatorial forest

IV. Let us learn:

1. Assertion (A): Aurora is a curtain of color lights that appear in the sky.
Reason (R): They are caused by magnetic storms in the upper atmosphere.
(a) Both A and R are individually true and R is the correct explanation for A.
(b) Both A and R are individually true but R is not the correct explanation for A
(c) A is true but R is false.
(d) R is true but A is false
Answer: (a) Both A and R is individually true and R is the correct explanation for A

2. Assertion (A): A geological feature of Africa is the Great Rift Valley.
Reason (R): A Rift valley is a large crack in the earth’s surface formed by tectonic activity.
(a) Both A and R is individually true and R is the correct explanation for A.
(b) Both A and R are individually true but R is not the correct explanation for A
(c) A is true but R is false.
(d) R is true but, A is false
Answer: (a) Both A and R are individually true and R is the correct explanation for A

V. Answer in brief:

1. Why Africa is called a “Mother Continent”?
Answer:

• Africa is called the Mother continent.
• Because it was the oldest inhabited continent on Earth.
• The diverse geographical condition is the main reason for heterogeneous culture and home for ethnic groups.

2. What are the important rivers of Africa?
Answer:
The important rivers of Africa are R. Nile, R. Congo or Zaire, R. Niger, R. Zambezi, R. Orange, and R. Limpopo.

3. Name the physical division of Australia.
Answer:
The Physical divisions of Australia are

• The Great Western Plateau
• The Central Law lands
• The Eastern High lands.

4. Write about the nature of the Antarctica continent.
Answer:

1. Antarctica is a unique continent. It does not have a native population.
2. There is no country in Antarctica.
3. It is the coldest continent with a permanent cover of ice.
4. It is the only continent called the white continent.

5. Mention any four economic activities of Australia.
Answer:
Agriculture, forestry, fishing mining are some economic activities of Australia.

VI. Give reasons:

1. Egypt is called the gift of the Nile.
Answer:

• Egypt is called the gift of the Nile.
• As it is the lifeline of Egypt.
• Without the Nile, Egypt would have been a desert.

2. Deserts are found in the western margins of continents.
Answer:

1. Most of the world deserts are located in the western margins of continents in the subtropics because the prevailing winds in the tropics are tropical easterly winds.
2. The tropical easterly winds become dry by the time they reach the western margins of continent and so they bring no rainfall.

3. Antarctica is called the continent of scientists.
Answer:

• Scientists of any country are free to conduct experiments and collect data from Antarctica.
• So it is called the continent of scientists.

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