Tag: evs - i

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Questions Related to evs - i

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

Which of these is the not the role of atmosphere ?

  1. Air is a good conductor of heat

  2. Air helps in transmitting sound

  3. Burning of fire takes place in presence of oxygen

  4. Ozone layer of atmosphere protects the living organisms from harmful radiations of sun
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Air is a bad conductor of heat and not a good conductor hence the temperature on the earth is maintained for life to exist unlike the other planets. Atmosphere prevents sudden increase in temperature during the day light hours. It slows down the escape of heat into outer space during the night.

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

The upper most weathered layer of earth's crust is 

  1. Sand

  2. Organic matter

  3. Soil

  4. Minerals
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

The earth that we live on is one of the planets of the solar system. Its crust is deep and we stay on its uppermost layer. The upper layer of earth is formed by soil. It can get weathered away due to external forces like water, wind etc.

So the correct answer is "Soil".

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

The thickness of troposphere is

  1. 12 km

  2. 40km

  3. 8o km

  4. 50 km
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation
The atmosphere is made up of five layers mainly, exosphere, thermosphere, mesosphere, stratosphere and troposphere. The thickness of troposphere is measured 12 km. The tropopause is the boundary region between the troposphere and the stratosphere. It is the lowest major atmospheric layer, extending from the Earth's surface up to the bottom of the stratosphere. 
So, the correct answer is option A.
Multiple choice evs - i the earth and its living world introduction to the spheres of the earth origin of universe introduction to natural resources

Which of the following is the type of lithosphere?

  1. Oceanic

  2. Continental

  3. Asthenosphere

  4. Both A and B
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

The lithosphere is referred to the solid part of the Earth. This is the part which includes the crust and the upper mantle. There are two types of the lithosphere. The oceanic lithosphere is the part which is comprised of the oceans. The continental lithosphere is the part which is comprised of the continental crust. The continental part comprises of a more thick layer.

Thus, the correct answer is option D. 

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

All of the followings are atmospheric layers except.

  1. Mesosphere

  2. Troposphere

  3. Asthenosphere

  4. Thermosphere
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

The atmosphere of Earth is a layer of gases surrounding the planet Earth that is retained by Earth's gravity. The troposphere is the lowest portion of Earth's atmosphere. It contains approximately 80% of the atmosphere's mass. 

In the mesosphere, temperature decreases with increasing height. The stratosphere is the second major layer of Earth's atmosphere, just above the troposphere and below the mesosphere. It is stratified in temperature, with warmer layers higher up and cooler layers farther down. The thermosphere is the layer of the Earth's atmosphere directly above the mesosphere and directly below the exosphere. Within this layer, ultraviolet radiation (UV) causes ionization. 

The asthenosphere is the highly viscous region of the upper mantle of the Earth. It lies below the lithosphere, at depths between approximately 80 and 200 km below the surface.
Thus, the correct answer is option C.

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

Atmospheric composition is 

  1. Argon

  2. Helium

  3. Iron

  4. Both A and B
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

An envelope of gas that surrounds earth is called atmosphere. It contains 78% nitrogen, 21% oxygen, 0.03% carbon dioxide, 0.9% argon and traces of other gases like helium, little amount of water vapour, dust particles and other solid particles. So, the correct option is D. 

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

Which of the following maintains atmospheric temperature?

  1. Hydrosphere

  2. Biosphere

  3. Mesosphere

  4. None of the above
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

The hydrosphere, specifically the world's oceans, plays a critical role in regulating Earth's temperature by absorbing and distributing solar heat through ocean currents and evaporation.