Prabin Kalikote

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Asked Questions

What are meteors? Why are they completely finished in atmosphere?

The pieces of stone or metal which enters the earth'satmosphere are called meteors.
Ameteorslasts for very short time and completelyfinished in atmosphere because the small rockpiecesburn and vaporizecompletelydue to the excessiveheat produced by the atmospheric friction.

What are asteroids? Give two examples.

The rocks and metal objects which are present in between the orbits of Mars and Jupiter that revolve around the sun are called asteroids or minor planets.

Define planets. What are inner and outer planets?

Planets are the heavenly bodies which revolve aroundthe sun in ellipticalorbits.
Those planets which are present inside the asteroidbelt are called inner planets.
Those planetswhich are presentoutside the asteroidbelt are called outer planets.

What is the solar system? Convert one light year into kilometers.

The family of sun, including all planets and theirsatellites, meteors, comets, asteroids, etc. is calledthe solar system.
We know,
Speed of light = 3 x 10⁸ m/s.
Time = 1 year.
We have,
Distance travelled by light in 1 year = speed of light * time
=3 * 10⁸m/s * 1 year.
= 3 * 10⁸m/s * 365 * 24 * 60 * 60 seconds.
= 9.46 * 10¹⁵m.
= 9.46 * 10¹²km.

What is the universe? Give the unit to measure the distance between any two heavenly bodies.

The universe is all of spacetime and everything thatexists therein including all planets, satellites, stars,galaxies, constellations, comets, dust particles, matter,energy. etc.
The units to measure the distances betweenanytwo heavenly bodies are:
-Astronomical Unit (AU)
1AU ----------> 1.5 * 10¹¹m.
-Light Year
1light year ----------> 9.46 * 10¹²km.
-Par Sec
1 par sec ----------->3.26 light year.

Write short notes on Climate Change Policy, 2067.

Climate change causes increase in atmospheric pressureand temperature. The Increase in temperature has negativeimpacts on agriculture, forests, human health, bio-diversity,socio-economic aspects,etc. in Nepal. Thus, it is essential togenerate awareness regarding the ways to adapt to climatechange and its effects. In this regard Climate Change Policy,2067 has been developed with the specific objectivesand policies.

Describe in brief about" International efforts for the reduction of and adaption to climate change."

The international efforts are:
- The United Nations Framework Convention of ClimateChange (UNFCCC).
-UNClimatechange conference.
-Agenda 21.
-Intergovernmental forum.
-KyotoProtocol.
-Measures to reduce GHG on the basis of KyotoProtocol.
-Reduction of emission due to deforestation.