Gutenburg discontinuity is found between the:
Crust and mantle
Mantle and Core
Upper core and Lower Core
Upper mantle and lower mantle
Which one of the following percentages of distance from earth surface is correct for perigee' of Moon than 'apogee'?
In order of their distances from the Sun. which of the following planets lie between Mars and Uranus?
Earth and Jupiter
Jupiter and Saturn
Saturn and Earth
Saturn and Neptune
Jupiter and Saturn arc located between Mars and Uranus.
Which one of the following statements is correct with reference to our solar system?
The earth is the densest of all the planets in our solar system
The predominant element in the composition of earth is silicon
The sun contains 75 percent of the mass of the solar system
The diameter of the sun is 190 times that of the earth
The earth is the densest of all the planet. Density of Earth is 5.52. Venus-5.50. Mercury 5.27, Mars -3.95. Jupiter and Saturn - 0.69. Uranus - 11.70.
In the earth's direction of rotation is reversed, what should be the IST when it is noon at the International Date Line?
India is a large country spanning over 30° of longitude. It is unusual in having a single time zone all over the country , 5 1/2 hours fast. If the direction of rotation of earth is reversed then Indian Standard Time will be - 51/2 hr. When it is noon the time is 12:00; that will be 6:30 AM.in place of 17:30 P.M. or 5:30 P.M.
If we studied space for a year, we would see different stars every.
Diamond ring is a phenomenon observed:
at the start of a total solar eclipse
at the end of a total solar eclipse
only along the peripheral regions of the totality trail
only in the central regions of the totality trail
Diamond ring is observed during solar eclipse, only along the peripheral regions of the totality trail.
An instrument to measure the amount of brightness of sunshine received at a point on Earth's surface is
Campbell - Stoke's recorder
All of the above
What can be the maximum duration of totality for a solar eclipse?
7 minutes 40 seconds
1 hour 42 minutes
There is no maximum duration
Which of the following statements with regard to the term 'great circle' is not correct ?
Equator is a great circle.
A ship can save fuel and time by following the great circle arc between two points.
Only one great circle can be drawn on a sphere.
A great circle results when a plane passes through the centre of a sphere.
The sidereal month may be defined as
the period in which the moon completes an orbit around the Earth.
the period in which the moon completes an orbit around the Earth and returns to the same position in the sky.
the period of rotation of moon
None of these
Magma that is more granitic tends to be very explosive because
of relatively higher water content
of relatively higher gases content
of relatively lower water content
of relatively lower gases content
One Astronomical Unit is the average distance between
Earth and the Sun
Earth and the Moon
Jupiter and the Sun
Pluto and the Sun
We always see the same face of the moon because
it is smaller than the earth.
it revolves on its axis in a direction opposite to that of the earth.
it takes equal time for both revolution around the earth and rotation on its own axis.
it rotates at the same speed as the earth around the sun.
The theory suggesting that the continents of South America and Africa were once joined together was the
continental drift theory
When it is 12 Noon at Allahabad, the time at Wellington (New Zealand) would be Cose to which one of the following?
4:30 pm of the same day
4:30 pm of the previous day
6:30 pm of the same day
6:30 pm of the previous day
Beirut time is two hours ahead and Lima time is live hours behind GMT. The longitudes of Beirut and Lima are respectively:
75° West and 30° East
70° East and 35° West
30° East and 75° West
35° West and 70° East
Beirut is in the east of G..M.T. and Lima is live hours behind the G.M.T. We know that 1° is equal to four minutes i.e.. 2 hours = 30° East and Beirut is 75° West of G.M.T.
Which one of the following is the time required for the earth to return to a given point in its orbit with reference to fixed stars called?
Which one of the following pairs is not correctly matched?
June Midday Sun overhead at Tropic of Cancer
December Midday Sun overhead at Tropic of Capricorn
March Midday Sun overhead on Equator
September Midday Sun overhead at Arctic Circle
The parallel at which the sun is overhead at midday is show n in the following diagram ;
The colour of the star is an indication of its
Distance from the earth
Distance from the sun
The colour of the star Ls an indication of its temperature. Tbe glowing is caused by something called Black-Body radiation, which has to do with the heat energy trying to radiate away in more and more energetic wavelengths. Red stars are relatively cool at only a few thousand degrees Celsius, white stars arc hot at about ten thousand degrees, and blue stars are the hottest.
Which one of the following is the largest satellite in solar system?
Ganymede is the largest satellite in solar system. Ganymede is a satellite of Jupiter and the largest moon in the Solar System. It is the seventh moon and third Galilean satellite outward from Jupiter. Completing an orbit in roughly seven days, Ganymede participates in a 1:2:4 orbital resonance with the moons Europa and Io, respectively. It has a diameter of 5,268 km (3,273 mi), 8% larger than that of the planet Mercury, but has only 45% of the latter's mass.
The distance of Moon from the Earth is
384 thousand kms.
300 thousand kms.
350 thousand kms.
446 thousand kms.
The distance of moon from the Earth is 384 thousands kms. The Moon is the only natural satellite of the Earth and the fifth largest moon in the Solar System. It is the largest natural satellite of a planet in the Solar System relative to the size of its primary, having 27% the diameter and 60% the density of Earth, resulting in 1/81 its mass.
What is the time taken by the Earth to complete one rotation on its axis?
23 hr 52 min 4 sec
23 hr 56 min 4 sec
24 hr 53 min 2 sec
24 hr 12 min 6 sec
The time taken by the Earth to complete one rotation on its axis is 23 hr-56 min 4 sec.
During the Venus transit, the planet appeared as a tiny black circle moving on the Sun. The black colour on the Sun is because the planet:
Obstructed all light from the Sun.
Is black in colour.
Was invisible due to bright rays from the Sun.
Behaved as a black hole during its transit.
Space between Earth and Moon is known as
None of these
Space between Earth and Moon is known as Cislunar. Pertaining to the space between the earth and the orbit of the moon.