(50) Universe Flashcards
Morning Star?
Venus
Comets are celestial bodies moving around the solar system in
Elliptical or hyperbolical orbits, usually accompanied by a shining tail
The temperature of Sun’s outer surface is
6000 degree Celcius
______ planet of the solar system spins on its axis as the fastest rate
Jupiter
____ planet dropped from the list of planets in 2006
Pluto
_____ planet has the longest period of rotation is:
Venus
225 Days
Statement regarding shooting stars is ?
They are meteors
Watery Planet?
Earth
Solar System was discovered by
Copernicus
Huge congregation of stars that are held together by the force of gravity are known as
Galaxies
The unit of measuring distances b/w the stars is known as
Cosmic Kilometre
___ Planet looks reddish in the night sky
Mars
The planets are kept in motion in their respective orbits by:
Gravitation annd centrifugal force
The study of heavenly bodies is known as
Astrophysics
Supernova is a
Dying Star
The milky way extends through a distance of:
10^5 Light years
Atmospheric Refraction?
The altitudes of heavenly bodies appears to be greater than they actually are
the period of one year revolution of sun around the centre of galaxy is called
Cosmic Year
Cosmography?
is concerned with the description and mapping of the main features of the universe
The same side of the moon always faces the earth because?
The period of rotation of the moon on its axis and period of revolution around the earth is almost the same
The light coming from stars gives the idea of their
Rotational Speed
The constellation of stars appears at different postions in the sky at different times during night mainly coz?
Coz earth rotates about its axis
The Sun Spots cause
- Aurora australis and aurora borealis
- Magnetic storms on the surface of the sun
- Polar Auroras
“Parsec” is the unit of measurement of:
Astronomical Distance
The distance of the nearest star besides the sun from the earth is
4 light years
Lunar eclipse does not occur every month because
The moon’s orbit is not all the time in the same plane as the earth
______ celestial body bear ‘The sea of Tranquality’ and ‘The ocean of storms’.
Moon
The time required by moonlight to reach the earth is
1.3 seconds
The brightest star in the sky is
Sirius
Lunar sea refers to
A dark plain on the moon
Lunar eclipsed cause when the
The Earth comes b/w the sun and the moon
The SOLAR CORONA mainly consists of
Molten Lava
___ and___ planets have no satellites
Mercury and Venus
____ gas is the predominant in the sun
Hydrogen
Smallest planet?
Mercury
____ planet is at the farthest distance from the earth
Neptune
tides are caused by the gravitational pull of the
Sun and The moon on earth
The solar wind is composed of
- Outward stream of protons on the sun surface
- Ionized gas
- Plasma
Solar Eclipse occurs when
Moon Comes b/w sun and earth
The largest planet of solar system
Jupiter
Sattelites of Jupiter
- Lo
- Europa
- Gennymade
- Callisto
Titan is the satellite of which planet?
Saturn
Moon is called a satellite of the earth because
It produces tides on earth
Comets revolved around
Sun
The position of a planet when it is nearest to the sun, is called
Perihelion
Red Planet?
Mars
Earth’s Twin?
Venus
The Saturn Rings were discovered by
Galileo
