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Test: Major Domains Of The Earth


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Test: Major Domains Of The Earth - Question 1

The uppermost solid layer of the earth is called

Detailed Solution for Test: Major Domains Of The Earth - Question 1
  • The crust is the rocky outer part of the Earth.
  • It is made up of the brittle crust and the top part of the upper mantle.
  • The crust is the coolest and most rigid part of the Earth.
Test: Major Domains Of The Earth - Question 2

The water mass of the earth including oceans, seas, rivers etc in the atmosphere

Detailed Solution for Test: Major Domains Of The Earth - Question 2
  • The hydrosphere is the combined mass of water found on, under, and above the surface of the earth.
  • It has been estimated that there are 1386 million cubic kilometres of water on earth.
  • This includes water in liquid and frozen forms in groundwater, oceans, lakes and streams approximately 75% of Earth’s surface, an area of some 361 million square kilometres is covered by ocean.
Test: Major Domains Of The Earth - Question 3

How many oceans are there?

Detailed Solution for Test: Major Domains Of The Earth - Question 3
  • There are four named ocean basins: the Atlantic, Pacific, Indian, and Arctic.
  • However, most countries - including the United States - now recognize the Southern (Antarctic) as the fifth ocean basin. The Pacific, Atlantic, and Indian are the most commonly known.
Test: Major Domains Of The Earth - Question 4

Which of the following is NOT a continent?

Detailed Solution for Test: Major Domains Of The Earth - Question 4
  • The seven-continent model is probably the most widely taught. 
  • The continents are, from largest to smallest: Asia, Africa, North America, South America, Antarctica, Europe, and Australia.
Test: Major Domains Of The Earth - Question 5

The major constituent of atmosphere by percent is

Detailed Solution for Test: Major Domains Of The Earth - Question 5
  • The atmosphere is composed mainly of nitrogen and oxygen, which make up about 99 per cent of clean, dry air.
  • Nitrogen 78 per cent, oxygen 21 per cent and other gases like carbondioxide, argon and others comprise 1 per cent by volume. 
Test: Major Domains Of The Earth - Question 6

The ____ ocean is named after a country

Detailed Solution for Test: Major Domains Of The Earth - Question 6
  • The only ocean named after a country is the Indian Ocean.
  • Indian ocean is named after the country 'India' and is the third largest ocean in the world.
  • The area occupied by the ocean is 20% of the earth's total surface area.
  • The Indian Ocean is, both geographically and politically, the most complex ocean of the world.
  • The shape of ocean is almost triangular. In the north, it is bound by Asia, in the west by Africa and in the east by Australia.
Test: Major Domains Of The Earth - Question 7

Which of the following is NOT among the major domains of the earth?

Detailed Solution for Test: Major Domains Of The Earth - Question 7

These are the four major domains of the earth

  1. Lithospehere
  2. Hydrosphere
  3. Atmosphere
  4. Biosphere

Detailed Solution:

  • The Lithosphere is called the solid portion of the earth on which we live. It comprises the thin layers of soil that contain nutrient elements that sustain organisms and the rocks of the earth’s crust.
  • The Hydrosphere is a very big area of the earth’s surface that is covered by water. It comprises water in all its forms, that is, water vapor, ice, and water. As for running water in rivers and oceans and in underground water, lakes, ice in glaciers, and the water vapor in the atmosphere, all comprise the hydrosphere. The earth is called the blue planet. More than 97%97% of the Earth’s water is found in the oceans and thus is too salty for human use. A large proportion of the rest of the water is in the form of glaciers and ice sheets or under the ground and a very small percentage is available as freshwater for human use. Hence, we face a shortage of water despite being a ‘blue planet’.
  • The Atmosphere is the gaseous layers that surround the earth, where oxygen, nitrogen, carbon dioxide, and other gases are found. This thin blanket of air is an integral aspect of the planet. It protects us from the harmful effects of the sun’s rays and provides us with the air we breathe. The atmosphere extends up to a height of about 1,600 kilometers and is divided into five layers based on its temperature, composition, and other properties. These layers are called the troposphere, the stratosphere, the mesosphere, the thermosphere, and the exosphere.
  • The Biosphere is the narrow zone that contains all forms of life where we find land, water, and air together. This is the zone in which life is unique to this planet. The organisms in the biosphere may be divided into the plant kingdom and the animal kingdom.
Test: Major Domains Of The Earth - Question 8

Atmosphere is

Detailed Solution for Test: Major Domains Of The Earth - Question 8

An atmosphere is a sheet of gases that surround material body or a planet. It is controlled by the gravity of that body. Argon, oxygen and nitrogen form the three main constitutions of the atmosphere.

Test: Major Domains Of The Earth - Question 9

The greatest depth of the world is found in which ocean?

Detailed Solution for Test: Major Domains Of The Earth - Question 9

The greatest depth on Earth is recorded at The Challenger Deep in the Mariana Trench. It is the deepest known point in Earth’s oceans with a depth of 35,814 feet. If Mount Everest, the highest mountain on the Earth would be placed at this location, then it would get covered by over one mile of water.

The Mariana Trench, which is situated within the territories of the U.S. dependencies of the Northern Mariana Islands and Guam, was designated a U.S. national monument in 2009.

The first descent to the bottom of the Mariana Trench took place on January 23, 1960. The French-built U.S. Navy-operated bathyscaphe Trieste—with Swiss ocean engineer Jacques Piccard and U.S. naval officer Don Walsh aboard—made a record dive to 35,814 feet (10,916 meters) in Challenger Deep. The next person to descend into that location did so more than 50 years after Piccard and Walsh.

Test: Major Domains Of The Earth - Question 10

Which one of the following is the largest continent?

Detailed Solution for Test: Major Domains Of The Earth - Question 10
  • By area, Asia is the largest continent at 44,391,162 square km.
  • It is also the largest by population with more than 4 billion people.
  • There is quite a bit of debate as to how many continents there are.
  • Some areas of the world combine Asia and Europe into one continent called Eurasia.
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