Tag: introduction to the spheres of the earth

Questions Related to introduction to the spheres of the earth

The standard unit of measuring temperature is ____________.

geography earth as a planet spheres of earth earth and structure introduction to the spheres of the earth

  1. Calorie

  2. Hertz

  3. Degree celsius

  4. Metre

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Correct Option: C
Explanation:

SI Units: Temperature is Degree celsius

One degree Celsius is an interval of 1 K, and zero degrees Celsius is 273.15 K. An interval of one Celsius degree corresponds to an interval of 1.8 Fahrenheit degrees on the Fahrenheit temperature scale.

The first life had appeared about 

evs - i the earth and its living world introduction to the spheres of the earth origin of universe introduction to natural resources

  1. 4.8 billion years ago

  2. 3.8 billion years ago

  3. 1.4 billion years ago

  4. 2 billion years ago

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Correct Option: B
Explanation:

About 3.8 billion years ago after the formation of earth, single celled prokaryotic cells (bacteria) appeared. It is supposed that the multicellular living organisms evolved from them. So, the correct option is B.

Ozone layer occurs in.

evs - i the earth and its living world introduction to the spheres of the earth origin of universe introduction to natural resources

  1. Ionosphere

  2. Stratosphere

  3. Thermosphere

  4. Troposphere

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Correct Option: B
Explanation:

The Ozone layer is located in the stratosphere in a region that is 10 to 50 km above the Earth.

So, the correct option is 'Stratosphere'.

Transitional layer between stratosphere and mesosphere is ______________.

evs - i the earth and its living world introduction to the spheres of the earth origin of universe introduction to natural resources

  1. Troposphere

  2. Lithosphere

  3. Stratopause

  4. Tropopause

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Correct Option: C

Earth is protected from ultra-violet radiations by means of.

evs - i the earth and its living world introduction to the spheres of the earth origin of universe introduction to natural resources

  1. Ozone layer

  2. Nitrogen

  3. Oxygen

  4. Carbon dioxide

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Correct Option: A
Explanation:

The ozone layer filters out most of the sun's harmful ultraviolet radiation and is thereby significant for the life on Earth.

So, the correct option is 'Ozone layer'.

Thickness of ozone in column of air from ground to top of atmosphere is measured in terms of

evs - i the earth and its living world introduction to the spheres of the earth origin of universe introduction to natural resources

  1. Decibel units

  2. Pascal units

  3. Svedberg units

  4. Dobson units

  5. Angstrom units

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Correct Option: D
Explanation:
A. Decibel (dB) is the unit to measure the intensity of sound.
B. Pascal (Pa) is the unit measure pressure.
C. Svedberg (S) is a non-metric unit used to express the sedimentation coefficient of particles. 
D. Dobson unit (DU) is used to measure the thickness of earth's atmosphere.
E. Angstrom (Å) is a unit of length used to express the size of atoms, molecules etc.
Hence, thickness of ozone in column of air from ground to top of atmosphere is measured in terms of Dobson units.
So, the correct answer is 'Dobson units'.

Concentration of ozone in troposphere is

evs - i the earth and its living world introduction to the spheres of the earth origin of universe introduction to natural resources

  1. 0.05 ppm

  2. 0.1 ppm

  3. 1.5 ppm

  4. 10.0 ppm

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Correct Option: A

Zone of atmosphere near the ground is

evs - i the earth and its living world introduction to the spheres of the earth origin of universe introduction to natural resources

  1. Troposphere

  2. Stratosphere

  3. Mesosphere

  4. Homosphere

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Correct Option: A

What factor makes a man dominant species in biosphere?

evs - i the earth and its living world introduction to the spheres of the earth origin of universe introduction to natural resources

  1. Body structure

  2. Ingenious brain power

  3. Powerful body

  4. Internal structure of body

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Correct Option: B

Where is the first Biosphere Reserve of India is located?

evs - i the earth and its living world introduction to the spheres of the earth origin of universe introduction to natural resources

  1. Nilgiri

  2. Nanda Devi

  3. Sunder van

  4. Great Nicobar

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Correct Option: A