Tag: the earth and its living world

Quizzes (28) Questions (100)

Questions Related to the earth and its living world

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

Ozonosphere is component of

  1. Troposphere

  2. Stratosphere

  3. Mesosphere

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

Troposphere is the layer where all weather occurs. this is the lowest layer.

Above the troposphere lies the stratosphere where temperatures increase with altitude because of increasing amounts of ozone. The ozone layer within the stratosphere absorbs harmful ultraviolet rays of sunlight. After that comes mesosphere and thermosphere. So the correct answer is 'Stratosphere '

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

In thermosphere the temperature

  1. Rises with height to $200^0$ C
  2. Rises with height to $1500^0$ C

  3. First decreases then rises
  4. Decreases to - $150^0$ C
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

In the thermosphere, temperatures increase significantly with altitude due to the absorption of high-energy solar radiation, reaching temperatures up to 1500 degrees Celsius or more.

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

Lapse rate in troposphere is

  1. $3.1^0$ C/km
  2. $6.5^0$ C/km
  3. $9.8^0$ C/km
  4. $13.6^0 C/km
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Troposphere is the lowest layer in the earth's atmosphere. it is the same layer in which all the change in weather takes place. Lapse rate is the rate at which the temperature drops due to the difference in elevation. the more the altitude the more the drop in temperature is there. The lapse rate of $6.5$ is there for the level of $0$ to  $11,000$ m. This is the region in which troposphere lies. 

So, the correct answer is ' $6.5^oC$$/Km$. '

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 one is nearly absent in ozonosphere?

  1. Dust particles

  2. Water vapours
  3. CO$ _2$

  4. All the above
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

The Ozone layer or ozone shield is a region of Earth's stratosphere that absorbs most of the Sun's ultraviolet radiation. It contains high concentrations of ozone (O3) in relation to other parts of the atmosphere, although still small in relation to other gases in the stratosphere. As the ozonosphere only contains high levels of ozone gas, therefore all the other things such as the dust particles. water vapours and CO2 are absent from it. 

So, the correct answer is 'All of the above. '

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

Mesosphere is component of

  1. Atmosphere

  2. Hydrosphere

  3. Lithosphere

  4. Both A and B
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation
Earth's atmosphere is divided into five main layers: the exosphere, the thermosphere, the mesosphere, the stratosphere and the troposphere. Therefore mesosphere is the second most layer of the atmosphere measure from the surface of the earth and is therefore a component of the atmosphere. The mesosphere is directly above the stratosphere and below the thermosphere. It extends from about 50 to 85 km (31 to 53 miles) above our planet.
So, the correct answer is 'Atmosphere'.
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 layer of atmosphere which protects the living beings from harmful rays is 

  1. Mesosphere

  2. Ozonosphere

  3. Thermosphere

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

Ozone is concentrated mainly in the stratosphere, where it absorbs solar radiation, protecting Earth's living organisms from the ultraviolet light from the sun. UV radiation is harmful to DNA; without the atmosphere's ozone, living organisms could not exist and thrive as they do now. The area in which ozone is concentrated in stratosphere is called the ozonosphere, So the correct answer is 'Both B and 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

UV radiations absorbed by ozone layer are

  1. UV-C

  2. Complete UV-C and a large amount of UV-B

  3. Complete UV-C and complete UV-B

  4. All types
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Most of the sun's UV-B radiation is absorbed by ozone in the stratosphere. UV-C radiation is absorbed by oxygen and ozone in the stratosphere and never reaches the Earth's surface. This is good because the C type rays are the most damaging of all. So the correct answer is 'Complete UV-C and a large amount of UV-B '

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

Ozone protects biosphere from high energy _____________.

  1. Infra-red rays

  2. Ultraviolet rays

  3. X-rays

  4. Gamma rays

  5. Cosmic rays
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

The ozone layer in the stratosphere absorbs the majority of the sun's harmful ultraviolet (UV) radiation, protecting living organisms from DNA damage and skin cancer.