Geography Quiz: Astronomy (Set - 2)
1. What is the time taken by the Earth to complete
one rotation on its axis?
(a) 23 hr 52 min 4 sec
(b) 23 hr 56 min 4 sec
(c) 24 hr
(d) 24 hr 12 min 6 sec
2. Which of the following is the nearest star of
Earth?
(a) Sirius
(b) Sun
(c) Rigel
(d) Vega
3. Which one of the following planets is the
brightest?
(a) Mars
(b) Mercury
(c) Venus
(d) Jupiter
4. The mean radius of the Earth is
(a) 3200 km
(b) 6400 km
(c) 8400 km
(d) 12800 km
5. Which one of the following planets rotates
clockwise?
(a) Earth
(b) Mars
(c) Venus
(d) Mercury
6. The nuclear fuel in the Sun is
(a) Helium
(b) Hydrogen
(c) Oxygen
(d) Uranium
7. The outermost layer of the sun is called
(a) Chromosphere
(b) Photosphere
(c) Lithosphere
(d) Corona
8. The surface temperature of sun is nearly
(a) 2000 K
(b) 4000 K
(c) 6000 K
(d) 8000 K
9. What is meant by the term “Midnight Sun”?
(a) Twilight
(b) Rising sun
(c) Very bright moon
(d) Sun shining in the polar circle
for long time
10. Which of the following planets is known as
“Red Planet”?
(a) Earth
(b) Mars
(c) Jupiter
(d) Saturn
11. The planet whose period of rotation is longer
than the period of revolution around the sun is
(a) Mercury
(b) Mars
(c) Venus
(d) Neptune
12. The last stage in the life cycle of a star is
(a) Black Hole
(b) Supernova
(c) Red Giant
(d) White Dwarf
13. Time taken by Sun’s light to reach Earth is
(a) 8 min 18 sec
(b) 9 min
(c) 9 min 18 sec
(d) 6 min 18 sec
14. Time taken by Moon’s light to reach Earth is
(a) 58 sec
(b) 1.34 sec
(c) 1.58 sec
(d) 2.32 sec
15. Space between Earth and Moon is known as
(a) Cislunar
(b) Fulalunar
(c) Nebula
(d) None of these
16. Our solar system is located in which Galaxy?
(a) Peroxima Centauri
(b) Alpha Centauri
(c) Milky Way
(d) Andromeda
17. Which of the following stars is also known as
Pulsar?
(a) Red Giant
(b) White Dwarf
(c) Neutron Star
(d) Massive Star
18. Which of the following stars is known as
Fossil star?
(a) Protostar
(b) Dog Star
(c) Red Giant
(d) White Dwarf
19. The energy of sun is produced by
(a) Nuclear fission
(b) Ionisation
(c) Nuclear fusion
(d) Oxidation
20. Which of the following does not belong to
solar system?
(a) Asteroids
(b) Comets
(c) Planets
(d) Nebulae
Answers with Explanations:
1. (b) The time taken by the Earth to
complete one rotation on its axis is 23 hr-56 min 4 sec.
2. (b) 3. (c) 4. (b)
5. (c) The planet Venus rotates clock wise.
On Venus, the rotation is backwards, or clockwise, which is called retrograde.
Standing on the surface of Venus, one would be able to see the sun rising from
the west.
6. (b) The nuclear fuel in the sun is
Hydrogen. Actually the sun isn’t “burning,” but instead its heat and light
comes from its core where the element hydrogen is continuously being converted
into the element helium. This known as nuclear fusion and is basically the same
thing a hydrogen bomb does.
7. (d) The outermost layer of the sun is
called corona. A corona is a type of plasma that surrounds the Sun and other
celestial bodies. The Sun’s corona extends millions of kilometers into space
and is most easily seen during a total solar eclipse, but it is also observable
with a coronagraph.
8. (c) 9. (d)
10. (b) Mars is known as Red planet. Mars is
the fourth planet from the Sun and the second smallest planet in the Solar
System. Named after the Roman God of war, it is often described as the “Red
Planet” because the iron oxide prevalent on its surface gives it a reddish
appearance. Mars is a terrestrial planet with a thin atmosphere, having surface
features reminiscent both of the impact craters of the Moon and the volcanoes,
valleys, deserts, and polar ice caps of Earth.
11. (c) Venus is the planet whose period of
rotation is longer than the period of revolution around the sun. The period of
rotation for Venus is 243 days. In other words, Venus takes 243 days to turn
once on its axis so that the stars are in the same position in the sky.
12. (d) The last stage in the life circle of
a star is white dwarf. Small stars, like the Sun, will undergo a relatively peaceful
and beautiful death that sees them pass through a planetary nebula phase to
become a white dwarf.
13. (a) 14. (b)
15. (a) Space between Earth and Moon is known
as Cislunar. Pertaining to the space between the earth and the orbit of the
moon.
16. (c) Our solar system is located in Milky
Way Galaxy. The Milky Way is the galaxy that contains our Solar System. Its
name “milky” is derived from its appearance as a dim glowing band arching
across the night sky in which the naked eye cannot distinguish individual
stars.
17. (c) Neutron star is also known as Pulsar.
A neutron star is a type of stellar remnant that can result from the
gravitational collapse of a massive star.
18. (d) White Dwarf is known as Fossil star.
They are supported by electron degeneracy pressure. It amplifies the contrast
with red giants. They are both very hot and very small. They are the opposite
of black holes. They are the end-products of small, low-mass stars.
19. (c) 20. (d)
