1. Which one of the following factors is responsible for the change in the regular direction of the ocean currents in the Indian Ocean?
(a) Indian Ocean is half an ocean
(b) Indian Ocean has monsoon drift
(c) Indian Ocean is a land-locked ocean
(d) Indian Ocean has greater variation in salinity
(b) Due to the monsoon drift of Indian ocean, its regular direction of the ocean currents changes twice an year.
2. Daily weather map showing isobars is an example of:
(a) Choropleth map
(b) Isopleth map
(c) Chorochromatic map
(d) Choroschematic map
(b) Daily wheather map showing isobars is an example of isopleth map. Isopleth map shows an imaginary surface by means of lines joining points of equal values.
3. The group of small pieces of rock revolving round the sun between the orbits of Mars and Jupiter are called:
(a) meteors
(b) comets
(c) meteorites
(d) asteroids
(d) The asteroids are group of small pieces of rock revolving round the sun between the orbit of Mars and Jupiter. They are approximately 40,000 in number.
4. If the earth's direction of rotation is reversed, what should be the IST when it is noon at the International Date Line?
(a) 06.30 hrs
(b) 05.30 hrs
(c) 18.30 hrs
(d) 17.30 hrs
(a)
5. Which one of the following stars is nearest to the Earth?
(a) Polaris
(b) Alpha Centauri
(c) Sun
(d) Sirius
(c) Sun is the star nearest to the earth. It is 150 million kilometer away from earth. Sun has temperatures of over 15 million ºC.
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