universe & solar system section 1 Practice Questions Answers Test with Solutions & More Shortcuts
Universe, solar system and Astronomy PRACTICE TEST [13 - EXERCISES]
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Question : 31 [SSC CGL 2016]
Stars twinkle but planets do not twinkle because
a) they are very far away from the earth resulting in decrease in intensity of light
b) they are nearer to the earth and hence we receive a greater amount of light and therefore minor variations in intensity are not noticeable
c) their distance from the earth does not change with time
d) they emit light of a constant intensity
Answer »Answer: (b)
Stars twinkle because they are point light sources. Passing through the atmosphere, the small beam of light constantly shifts by bouncing off particles in the air. The much closer planets appear instead as tiny disks in the sky.
Their apparent sizes are usually larger than the pockets of air that would distort their light, so the effects of scintillation are negligible. Being closer, planets appear as discs, with the shifting of light from one side canceling out the other.
Question : 32 [2012-I]
The imaginary line on the Earth’s surface that closely follows the 180° Meridian is
a) International Date Line
b) Tropic of Cancer
c) Equator
d) Prime Meridian
Answer »Answer: (a)
The International Date Line is an imaginary line of longitude on the Earth’s surface located at about 180 degrees east (or west) of the Greenwich Meridian.
Question : 33 [NDA/NA 2013-II]
What would be the date and local time of a place located at 88°30' E longitude when the local time at 0° longitude is 19.00 hrs. of 28th February 2013?
a) 23-30 hrs. of 28th February
b) 00-44 hrs. of 1st March
c) 00-54 hrs. of 1st March
d) 23-54 hrs. of 28th February
Answer »Answer: (c)
There is a time difference of 4 minutes per 1 degree change. Hence the following calculation will be done.
Long Time difference 8803' – 80-30' × 4 = 5 hrs 54 minutes,
Countries in E of Greenwich Meridian, will get more time i.e., in East time will be added, while in West time will be less.
At 0º longitude is 19 hrs of 28th Feb. 19 hrs + 5 hrs 54 minutes = 24 hrs–54 minutes the date will change at 24.01 hrs.
So it will be 0-54 minutes of 1st March.
Question : 35
Which of the following statements relating to Earthquakes is/are correct?
- The point of origin of Earthquake is called epicenter.
- The lines joining the places which were affected Earthquake at the same point of time are called homoseismal lines.
a) Both 1 and 2
b) Neither 1 nor 2
c) Only 2
d) Only 1
Answer »Answer: (a)
The epicenter or epicentrum is the point on the Earth’s surface that is directly above the hypocenter or focus, the point where an earthquake or underground explosion originates.
Homoseismal line. Line on the Earth’s surface connecting points where the seismic wave arrives, generated by an earthquake, at the same time.
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Universe, solar system and Astronomy Shortcuts »
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indian geography mcq CATEGORIES
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» Nature & Scope of Geography
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» Universe, solar system and Astronomy
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» Geomorphology & Earth landforms
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» Atmosphere & Climatology
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» Hydrosphere & Oceanography
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» Pedology or Soil & Agriculture
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» Ecology & Bio geography
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» World Physical Geography
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» World Human Geography (Population)
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» World Economic Geography (Industry, Trade, Transportation & Agriculture)
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» World Country, Capital, Area, Currency, Parliament, Religion, New & old name of country
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» Physiography & Geomorphology of India
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» Indian Drainage, Irrigation and Rivers & River Projects
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» Indian Climate
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» Ecology, Environment, Forest, Naturals vegetations of India & National Park of India
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» Indian Agriculture & Animal Husbandry
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» Minerals & Energy Resources of India
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» Industries & Trade in India
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» Transportation & Ports System of India
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