Solar System

Question 1

What is the farthest planet from the Sun?

Answer 1

Neptune also known as Ice Giant and Windiest planet.

Question 2

How long does it take Neptune to complete one revolution?

Answer 2

165 years

Question 3

What is the atmosphere of Neptune composed of?

Answer 3

Hydrogen, Helium, Water, Ammonia, Methane

Question 4

Who discovered Neptune?

Answer 4

Johann Galle and Urbain Le Verrier in 1846

Question 5

What is unique about Neptune’s discovery?

Answer 5

It was the only planet found by mathematical predictions.

Question 6

What happened to Pluto in 2006?

Answer 6

It was reclassified and is no longer considered a planet by the International Astronomical Union (IAU).

Question 7

What is the second largest planet in the solar system?

Answer 7

Saturn

Question 8

What is Saturn known for?

Answer 8

Its bright and concentric rings made of tiny rocks, gas, dust, and ice.

Question 9

What is the largest satellite of Saturn?

Answer 9

Titan

Question 10

What is Mars commonly known as?

Answer 10

The Red Planet due to Iron Oxide (FeO).

Question 11

What is the largest volcano and tallest mountain on Mars?

Answer 11

Olympus Mons

Question 12

What are the two satellites of Mars?

Answer 12

Phobos and Deimos

Question 13

Which planet is the hottest in the solar system?

Answer 13

Venus

Question 14

What are the alternative names for Venus?

Answer 14

Lucifer, Evening Star, and Morning Star.

Question 15

What is Earth often referred to as?

Answer 15

Earth’s Twin due to its similar mass and size.

Question 16

What is unique about Pluto’s rotation?

Answer 16

It rotates clockwise.

Question 17

What is the revolution period of Pluto?

Answer 17

248 Earth years

Question 18

What is the largest dwarf planet?

Answer 18

Pluto

Question 19

What is the second largest dwarf planet?

Answer 19

Eris

Question 20

What is the third largest dwarf planet?

Answer 20

Makemake

Question 21

What is the closest planet to the Sun?

Answer 21

Mercury

Question 22

What is unique about Mercury’s revolution?

Answer 22

It has the fastest revolution, taking 88 days.

Question 23

What is the diameter of Mercury?

Answer 23

4900 km

Question 24

What is the Nebular Hypothesis?

Answer 24

It describes the origin of the solar system.

Question 25

What is the composition of the Sun?

Answer 25

Hydrogen (73%), Helium (25%), and other metals.

Question 26

What is the temperature at the surface of the Sun?

Answer 26

5800 K / 5600 °C

Question 27

What is the closest star to Earth?

Answer 27

The Sun

Question 28

What is the speed of light?

Answer 28

3 lakh km/sec

Question 29

What is the distance between Earth and the Moon?

Answer 29

3,84,000 km

Question 30

What is the theory that explains the origin of the universe?

Answer 30

Big Bang Theory

Question 31

What are asteroids?

Answer 31

Small, rocky objects that orbit the Sun.

Question 32

What are meteoroids?

Answer 32

Small objects that enter Earth's atmosphere and burn up in the Mesosphere.

Question 33

What are comets?

Answer 33

Small icy dirt balls that orbit the Sun and burn upon reaching the Sun.

Question 34

How many dwarf planets are present in our Solar system

Answer 34

In kuiper belt: Pluto - largest satellite Charon, 1 Revolution = 248 Earth years Eris- 2nd largest dwarf planet Haumea- Fastest rotating in kuiper belt Makemake- 3rd largest dwarf planet, 1 Revolution =310 years In Asteroid belt: Ceres

Question 35

Who gave the heliocentric theory and in the year?

Answer 35

Copernious gave the theory of heliocentric and year 1543

Question 36

Big Bang theory was given by? (Origin of Universe)

Answer 36

Gorge Lemaitre gave in the year 1927 but published in 1931 Advin Hubble also work on big bang theory Steady State theory: This theory was given by Fred Hoyle, Harman Bondi and Thomas Gold

Question 37

Saturn density

Answer 37

0.68 g/cm^3

Question 38

Who discovers the Saturn's rings

Answer 38

Huygenes in 1655 And 1675: Cassini discovered gap b/w Saturn and rings

Question 39

Slowest rotation planet?

Answer 39

Venus it takes 243 days= 1 rotation

Question 40

Glowing part of the Sun is?

Answer 40

Photoshere- Solar flames Other fact- Sun spot: darker part of Sun Outer layer- Corona

Question 41

Nebula theory was given by? (Origin of Solar system)

Answer 41

1755 by Immanuel kant Further 1796 modified by Laplace