What proportion of the mass of the earth does the mass of the Moon equal?
1/81
1/18
1/27
1/72
Correct Answer :
A. 1/81
Related Questions
The group of small pieces of rock revolving round the Sun between the orbits of Mars and Jupiter are called
meteors
comets
meteorites
asteroids
What is the time difference for every degree of longitude?
Eight minutes
Ten minutes
Four minutes
Twelve minutes
A 'black hole' is a body in space which does not allow any radiation to come out. This property is due to its
Very small size
Very large size
Very high density
Very low density
Big Bang Theory' explains
the formation of universe
the origin and evolution of earth's crust
formation of Solar System
formation of constellation
Among the following which planet takes maximum time for one revolution around the Sun?
Earth
Jupiter
Mars
Venus
When dees the Summer Solstice occur?
July 23
June 21
May 20
April 31
A celestial body which revolves round the Sun and receives heat and light from it is called _____.
Planet
Orion
Satellite
Star
How much time does the earth take in completing one rotation on its axis in relation to sun?
23 hours 56 minutes
24 hours
23 hours 46 minutes
24 hours 4 minutes
Which planet rotates on its axis from east to west?
Venus
Uranus
Earth
Jupiter
When the Sun is vertically overhead along the Tropic of Capricorn at mid-day
days and nights are of equal lengths in the Northern Hemisphere
Nights are longer than days in the Southern Hemisphere
Days and nights are of equal lengths at the poles
Night is equal to 24 hours at the North Pole
Rapidly rotating stars emitting intense radio waves are called ___.
Pulsars
Quasuars
Neutron stars
All of the above
What happens when ships cross the International Date Line?
They have to pay a tax
Ships going west from the USA lose a day, ships going east from Japan and Australia gain a day
They have to report at the customs post
They have to check their clocks agains
What is the direction of rotation of the earth on its axis?
East to West
South to North
North to South
West to East
Planet nearest to the earth is _____.
Venus
Mercury
Mars
Jupiter
How many of the following statements are true?
1. Mean Solar Day is greater than Sidereal Day approximately by 4 minutes.
2. Earth's rotational velocity is decreasing.
3. Planets are arranged according to their increasing distance from the sun as follo
3 and 4
1, 3 and 4
1 and 2
1, 2, 3 and 4
A swarm of small bodies in between the two Planets of Solar System is called 'asteroids' which are those two Planets?
Mars and Jupiter
Earth and Venus
Neptune and Pluto
Jupiter and Saturn
Average density of the Earth is ( relative to water) __.
5.5
4.5
9.5
6.5
A Light Year measures
A unit of velocity
A unit of distance
A unit of pressure
A unit of time
Halley's comet visits us after every.
66 years
76 years
86 years
96 years
Which of the following statements prove(s) that the earth Is spherical?
The Sun rises and sets at different lines in different places.
The shadow cast by the earth on the moon during the lunar eclipse is always circular.
Pictures taken from high alti
Only 1
2 and 3
I, 2 and 3
Only 2
When does the Vernal Equinox occur?
December 25
March 21
February 28
January 14
The word 'planet' means ____.
wanderer
pollution
celestial body
heavenly body
When a year divisible by 4 and not divisible by 400 is called
Siderial Year
Solar Year
Cosmic Year
Leap Year
Which 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 per cent of the mass of the Solar System
The diameter of the Sun is 190 times that of the Earth
The Jupiter's atmosphere comprises mainly of
Hydrogen and oxygen
Carbondioxide and oxygen
Hydrogen and hydrogen compounds
Nitrogen and helium
A family or system of millions and millions of stars are called ____.
Universe
Solar System
Galaxy
Asteroids
What are the Pleides?
Constellation
Asteroides
Meteores
Comets
Orion and Great Bear stand for ______.
star
planet
Solar System
Constellation
A system of millions and millions of galaxies are called _____.
Solar System
Universe
Space
Constellation
On which date is the Earth in 'perihelion'?
January-3
June-21
July-4
December-22