27 Apr 2022

Samacheer Kalvi 7th Geography Term 3 Unit 1 Answers

Samacheer Kalvi 7th Geography Term 3 Unit 1 Book Back Questions and Answers:

Samacheer Kalvi 7th Standard Social Science Book Back 1 Mark and 2 Mark Question & Answers uploaded online and available PDF for free download. Class 7th New Syllabus Social Science Term III book back question & answer solutions guide available below for English Medium. TN Class 7 Social Science Geography Book Term 3 Unit 1 – Exploring Continents – North America and South America Solutions are provided on this page. Students looking for Samacheer Kalvi 7th Geography Term 3 Unit 1 Questions and Answers can check below.

We also provide class 7th other units Book Back One and Two Mark Solutions Guide on our site. Students looking for a new syllabus 7th standard Social Science Term 3 Unit 1 Exploring Continents – North America and South America Book Back Questions with Answer PDF:

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Samacheer Kalvi 7th Social Science Geography Book Back Unit 1 Term 3 Solution Guide PDF:

Social Subject 1 Mark and 2 Mark Solutions Guide 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.

Geography – Term 3

Unit 1 – Exploring Continents – North America and South America

I. Choose the correct answer:

1. The ______ separates North America from Asia
(a) Bering Strait
(b) Palk Straits
(c) Malacca Strait
(d) Gibraltar straits
Answer: (a) Bering Strait

2. __________ is known as the “sugar bowl of the world”
(a) Mexico
(b) USA
(c) Canada
(d) Cuba
Answer: (d) Cuba

3. __________ are the longest rivers in North America
(a) The Mississippi and Missouri rivers
(b) The Mackenzieriver
(c) The St. Lawrence river
(d) The Colorado river
Answer: (a) The Mississippi and Missouri rivers

4. __________ is the longest mountain chain in the world.
(a) The Andes
(b) TheRockies
(c) The Himalayas
(d) The Alps
Answer: (a) The Andes

5. __________ basin gets rainfall every day because of its equatorial location
(a) The Mackenzie
(b) The Orinoco
(c) The Amazon
(d) The Parana
Answer: (c) The Amazon

II. Fill in the blanks:

  1. _______ 86m below sea level is the lowest part of the continent of North America.
  2. _______ is one of the world’s best fishing grounds.
  3. The highest peak in the Andes is ______ on the Chile – Argentina border.
  4. _______ of the equatorial regions are called the “lungs of the world”.
  5. _______ is also known as the “coffee pot” of the world.

Answer:

  1. Death valley is
  2. Grand Bank
  3. Mt Aconcagua
  4. The Selvas
  5. Brazil

III. Match the following:

Mount McKinley Tropical forests
Grand Canyon The flightless bird
Ebony The Colorado River
4’O Clock Rains 6194 m
Rhea The equatorial regions

Answer:

Mount McKinley 6194 m
Grand Canyon The Colorado River
Ebony The equatorial regions
4’O Clock Rains Tropical forests
Rhea The flightless bird




IV. Give Reasons:

1. The eastern coast of North America particularly the USA enjoys a mild climate.
Answer:
The South and east are usually warm all year round and the regions around the mouth of the Mississippi-Missouri and the Gulf Coast have summer rain from the North East Trades which blow on-shore in summer.

2. United States of America is known as a “Melting Pot”.
Answer:
United States of America is known as the “Melting Pot” where hundreds of different cultures meet, blend, and create a new culture.

3. Though Quito and Amazon basin are in the same latitude Quito enjoys eternal Spring. Whereas the Amazon basin is hot.
Answer:

  1. The climate of the continent of South America has been closely influenced by the latitudes, attitudes, and proximity of the Pacific and Atlantic Oceans.
  2. It is hot in the Amazon basin as the equator passes through it whereas Quito, situated almost on the same latitude on the Andes, has “Eternal Spring”.
  3. That is, it has a pleasant climate throughout the year because of its high altitude at 9,350 feet or 2849.88 meters above sea level.

4. Peru is one of the world’s largest producers of tropical fish.
Answer:

  1. Peru is one of the world’s largest producers of tropical fish. Here the cool Humboldt Current helps in bringing plankton, which is the main food for fish.
  2. Commercial deep sea fishing off of Peru’s coastal belt of over 3000 km.
  3. Peruvian waters normally abound with swordfish, mackerel, yellowfin, pompano, and sharks.
  4. More than 50 species are caught commercially. –
  5. There are over 40 fishing ports on the Peruvian coast.
  6. Paita and Callao are being the most important centers in Peru.

V. Distinguish between:

1. The Rocky mountain and the Appalachian mountain.
Answer:

S.No. Rocky Mountain Appalachian mountain
1. The western part of North America is occupied by long ranges of young fold mountains known as the Rocky mountains. The eastern part of North America is formed of old-fold Appalachians which are not continuous like the Rockies.
2. The width varies from 110 to 480 km. There are few peaks more than 1800m high.
3. The Rocky Mountains are west of the Mississippi River. The Appalachian Mountains are east of the river.

2. The Prairies and the Pampas grassland.
Answer:

S.No. Prairies grassland Pampas grassland
1. The temperate grasslands of North America are known as Prairies. The temperate grasslands of South America are known as Pampas.
2. Region – Central USA and Central Canada. Region – North of the Eastern part of Argentina, Uruguay, and Southern Brazil.
3. Winter is very cold, Summer is hot and rainfall is moderate. Summer is quite warm and winter is cold and has moderate rainfall.
4. Flora – Grasses Flora – short grass.
5. Fauna – Coyote, Gophers, Rabbits Prairie Dogs, and Bison. Fauna – Rhea, Pampas Deer, Jaguar, Camel, Stag, etc.

3. Tundra and Taiga.
Answer:

S.No. Tundra Taiga
1. Region – Northern coast of Canada and Northern Islands. Region – The coniferous forests are found in Alaska and Canada, South Central Alaska, and North Eastern Canada.
2. Climate – Winter is long and severely cold, and Summer is short and cool. Rainfall is scanty. Climate – Winter is very cold, and Summer is warm and short. Heavy snowfall in winter.
3. Flora – Mosses, Lichens, and Dwarf willows. Flora – Pine, Fir, Cedar, and Spruce.
4. Fauna – Arctic fox, Reindeer, Musk ox, Polar bears, Sable and Blue fox. Fauna – Beaver, Fox, Sable, Ermine, Skunk, Caribou, and Grizzly Bears.

VI. Put (✓) for the correct option:

1. Assertion (A): Cotton grows well in the southern and western states of North America.
Reason (R): Warm summer with frequent rainfall and fertile soil which provide favorable conditions.
(a) Both A and R are correct.
(b) A is correct and R is wrong,
(c) A is wrong and R is correct.
(d) Both A and R are wrong
Answer: (a) Both A and R are correct

2. Assertion (A): industries in South America have developed rapidly.
Reason (R): The continent lacks the infrastructure (especially transport) need for industrialization,
(a) Both A and R are correct.
(b) A is correct and R is wrong,
(c) A is wrong and R is correct.
(d) Both A and R are wrong
Answer: (c) A is wrong and R is correct

Other Important Links for 7th Std Social Science Book Back Solutions:

Tamil Nadu Class 7th Standard Book Back Guide PDF, Click the link – 7th Book Back Questions & Answers PDF

For all three-term of 7th standard Social Science Book Back Answers English Medium – Samacheer kalvi 7th Social Science Book Back Answers




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