Tag: earth's energy budget

Questions Related to earth's energy budget

Sun produces heat and light energy by

evs solar energy water cycle earth's energy budget solar energy and its applications

  1. nuclear fusion of hydrogen atoms into helium atoms

  2. nuclear fission of ${H} _{2}$ atoms into helium atoms

  3. nuclear fission of $He$ atoms into ${H} _{2}$ atoms

  4. nuclear fusion of $He$ atoms into ${H} _{2}$ atoms

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Correct Option: B

Sun contains more than __________ of the total mass of the solar system.

evs solar energy water cycle earth's energy budget solar energy and its applications

  1. $90$%

  2. $65$%

  3. $46$%

  4. $99.8$%

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Correct Option: D

Sun loses approximately a weight of ________ every second which is the amount of ${H} _{2}$ gas that the sun turns into energy.

evs solar energy water cycle earth's energy budget solar energy and its applications

  1. $4$ lakh million tons

  2. $4$ million tons

  3. $4$ lakh tons

  4. $40$ lakh tons

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Correct Option: B

The correct order of spatial location of different layer of sun are

evs solar energy water cycle earth's energy budget solar energy and its applications

  1. core-radiative zone-convective zone-photosphere-chromosphere-transition region

  2. core-convective zone-chromosphere-photosphere-radiative zone

  3. core-convective zone-photosphere-chromosphere-convective zone-radiative zone

  4. core-radiative zone-convective zone-chromosphere-convective zone-photosphere

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Correct Option: A


Most of the sources of energy we use represent stored solar energy. Which of the following is not ultimately derived from the Sun's energy?

evs solar energy water cycle earth's energy budget solar energy and its applications

  1. Geothermal energy

  2. Wind Energy

  3. Nuclear energy

  4. BioMass

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Correct Option: C
Explanation:

Nuclear energy is not ultimately derived from the Sun's energy as uses radioactive substances to produce energy.

The sun radiates electromagnetic energy at the rate of $3.9 \times 10^{26}W$. Its radius is $6.96\times 10^8m$.The intensity of sun light at the solar surface will be $-(in \, W/m^2)$

evs solar energy water cycle earth's energy budget solar energy and its applications

  1. $1.4 \times 10^4$

  2. $2.8 \times 10^5$

  3. $4.2 \times 10^6$

  4. $5.6 \times 10^7$

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Correct Option: D
Explanation:

$I=\frac { P }{ { 4\pi { R^{ 2 } } } } =\frac { { 3.9\times { { 10 }^{ 26 } } } }{ { 4\times 3.14\times { { \left( { 6.96\times { { 10 }^{ 8 } } } \right)  }^{ 2 } } } } =5.6\times { 10^{ 7 } }w/{ m^{ 2 } }$