Polar Auroras are called __ in Southern Hemisphere.
Aurora Australis
Quasars
Aurora Borealis
Pulsar
Correct Answer :
A. Aurora Australis
Related Questions
Which planet rotates on its axis from north to south?
Uranus
Venus
Mars
Pluto
Deimos and Phobos are the satellites of
Earth
Mars
Uranus
Neptune
A celestial body consisting of a gaseous cloud enveloping a bright nucleus moving around the Sun in an elliptical or parabolic orbit so eccentrically that some escapes from the Solar Systems is called
Comet
Great Bear
Meteores
Asteroides
A celestial body which revolves round the Sun and receives heat and light from it is called _____.
Planet
Orion
Satellite
Star
On which date is the Earth in 'aphelion'?
July-4
December-22
September-23
June-21
In which of the following planets, the Great Red Spot has been the special feature?
Jupiter
Saturn
Mars
Venus
What is the temperature of the sun estimated at approximately?
5000°C
6000°C
7000°C
212°C
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
Earth revolves round the Sun In an orbit once In every __.
24 hours
20 hours
365 % days
366 days
The inclination of the earth's axis, i.e. the earth's axis is tilted at an angle from perpendicular to the orbital plane or makes an angle with the plane of the earth's orbit. What are these respective angles?
The permanent tilt of the Earth's axis and the revolution of the Earth in its orbit together cause
Day and night
Varying lengths of day and night at different times of the year
Differences in time between places on different meridians
The deflection of winds
In which direction la the Tropic oC Capricorn in relation to the Equator?
North
South
East
West
The tail of a comet is directed away from the Sun because
as the comet rotates around the Sun, the light mass of the comet is pushed away due to the centrifugal force alone
as the comet rotates, the lighter mass of the comet is attracted by some star situated in the direction of its tail
the radiation emitted by the Sun exerts a radial pressure on the comet throwing its tail away from the Sun
the tail of the comet always exists in the same orientation
Shoemaker-Levy 9 is a
Meteors
Pole Stars
Comets
Stars
The dark patches, associated with the Sun storms present in Sun are called
Sunspots
Pulsars
White Dwarfstar
Supernova
The most important constituent of the Sun's mass is.
Hydrogen
Helium
Silicon
Iron
1 and 2
2 and 3
3 and 4
1,2 and 4
Which of the following are the Inner Planets?
1. Mercury
2. Venus
3. Earth
4. Mars
Only 1
1 and 2
1, 2 and 3
1, 2, 3 and 4
What meridian is the International Date Line?
The 180° meridian
The O° meridian
The 90° meridian
The 135° meridian
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
The Jupiter's atmosphere comprises mainly of
Hydrogen and oxygen
Carbondioxide and oxygen
Hydrogen and hydrogen compounds
Nitrogen and helium
Which two planets do not have any satellites?
1. Mercury
2. Venus
3. Saturn
4. Pluto
1 and 2
2 WtQ 3
3 and 4
1 and 4
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
What proportion of the mass of the earth does the mass of the Moon equal?
1/81
1/18
1/27
1/72
What is a 'synodic month'?
Moon's period of rotation on its axis with respect to the earth.
Moon's period of revolution around the earth.
Moon's period of revolution with respect to a star at infinity
Moon's period of revolution with respect to the Sun
The solar eclipse takes place when
The Earth comes between the Sun and the Moon
The Moon passes between the Sun and the Earth
The Sun comes between the Earth and the Moon
The Planets of the Solar System lies on the same plane
The planet of lowest density (0.69) is __ .
Jupiter
Saturn
Neptune
Pluto
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
When the earth is at its minimum distance from the Sun, it is said to be
Perigee
Apogee
Perihelion
Aphelion
Sunspots are
undulations on the solar surface
huge magnetic storms on the solar surface
places with adequate sunshine
places of tourist importance
How many planets does our Solar System consist of?
9
6
7
10