EARTH MCQS SET 16

EARTH MCQS SET 16

1. Which of the following is not an effect produced by rotation of earth?
(a) It causes days and nights
(b) All heavenly bodies like sun, moon, planets appear to move from East to West
(c) Winds change their directions
(d) Poles have days and nights of 6 months duration
Ans: (d)

2. The revelations of a satellite photograph of the earth are as follows:
1. the Southern hemisphere bulges slightly more than the Northern hemisphere
2. it is slightly pear shaped ellipsoid of rotation
3. the polar axis of the earth is slightly shorter than the equatorial axis
4. the equatorial circumference is about 40,000km
Which of the above statements are correct ?
(a) 1, 2 and 3
(b) 1, 2, 3 and 4
(c) 1, 2 and 4
(d) 2, 3 and 4
Ans: (d)
 
3. Albedo is defined as:
(a) UV radiations sent out by the SUN
(b) a substance contained in the upper atmospheric layers of the earth, which is responsible for the reflection of/a part of solar radiations
(c) celestial bodies in earth's atmosphere which add to the greenhouse effect
(d) the amount of insolation reflected back to the space by the top of atmosphere, by clouds and ice-covered areas of the Earth's surface
Ans: (d)

4. The Sun shines vertically on the equator:
(a) throughout the year
(b) for six months
(c) twice a year
(d) once a year
Ans: (c)
 
5. The position of the sun is annually twice overhead at Singapore because of the:
(a) rotation of the earth
(b) revolution of the earth
(c) elliptical path of the earth's orbit
(d) parallelism of inclined axis of the earth
Ans: (d)
 
6. What is 'Siderial Day'?
(a) The day on which the duration of sunshine is the maximum
(b) The day on which the duration of sunshine and darkness are equal
(c) The time during which the earth makes a complete rotation on its axis in respect of the fixed stars
(d) The day on which the sun reaches its maximum distance from the equator
Ans: (c)
 
7. The distance between the earth and the sun is smallest in the month of:
(a) January
(b) March
(c) June
(d) September
Ans: (a)
 
8. The earth revolves round the sun in its orbit by approximately:
(a) 1° per day
(b) 2° per day
(c) 3° per day
(d) 5° per day
Ans: (a)
 
9. There is a continual daylight or summer in the Arctic regions from:
(a) 22nd December to 21st March
(b) 21st March to 21st June
(c) 21st March to 23rd September
(d) 21st June to 22nd December
Ans: (c)

10. Antipodes are:
(a) lines joining places having a time difference of 12 hours
(b) places diametrically opposite on earth's surface
(c) places located at a point where degree of latitude is equal to degree of longitude
(d) lines joining places having the same depths
Ans: (b)