1. The approximate diameter of the sun is _____ times the diameter of Earth. ?

92

109

146

123

Answer: 109

Explanation:

The Sun is 864,400 miles (1,391,000 kilometers) across. This is about 109 times the diameter of Earth. The Sun weighs about 333,000 times as much as Earth. It is so large that about 1,300,000 planet Earths can fit inside of it.


2. In India the Ursa Major Constellation is also known as ?

Devarshi

Maharshi

Saptarshi

Swadeshi

Answer: Saptarshi

Explanation:

Ursa Major is known as Saptarshi, each of the stars representing one of the Saptarshis or Seven Sages viz. Bhrigu, Atri, Angiras, Vasishtha, Pulastya, Pula


3. The uppermost layer of earth’s surface is called ?

Mental

Core

Magma

Crust

Answer: Crust

Explanation:

The Earth's crust is a thin shell on the outside of the Earth, which accounts for less than 1% of Earth's volume. It is the top component of the lithosphere, which is a division of Earth's layers that includes the crust and the upper part of the mantle. The lithosphere is broken into tectonic plates that move, allowing heat to escape from the interior of the Earth into space.


4. In the life cycle of a star , the stage nebula refers to ?

the stage when the outer layers expand, cool down and become less bright

the last stage of its life

a cloud of dust and hydrogen

the outer shell of a star

Answer: a cloud of dust and hydrogen

Explanation:

Life Cycle of a Star. Stars are formed in clouds of gas and dust, known as nebulae. however, the hydrogen fuel that powers the nuclear reactions within stars will begin to run out, and they will enter the final phases of their lifetime.


5. Lucifer is another name for the planet ______ ?

Jupiter

Mars

Venus

Saturn

Answer: Venus

Explanation:

As the meaning of the word Lucifer in Classical Mythology means “Light- bringer”. Venus is also known by the name Lucifer due to its feature of being the brightest planet.


6. _____ is no longer considered as a planet within Earth's Solar system. ?

Neptune

Pluto

Mars

Uranus

Answer: Pluto

Explanation:

Since 2006, as per the International Astronomical Union’s planetary criteria, Pluto isn’t considered a planet because it hasn’t cleared the neighbourhood around its orbit of other objects. However, it is considered as a dwarf planet.


7. Which planet is made up of thick white and yellowish clouds of sulfuric acid ?

Mars

Uranus

Neptune

Venus

Answer: Venus

Explanation:

Venus (Earth’s twin) has a thick, toxic atmosphere filled with carbon dioxide and it’s perpetually shrouded in thick, yellowish, clouds of mostly sulfuric acid that trap heat, causing a runaway greenhouse effect.


8. Which of the following planets is known as a gas giant ?

Earth

Mercury

Venus

Jupiter

Answer: Jupiter

Explanation:

Jupiter is composed of mostly hydrogen and helium, with large mantles of metallic hydrogen and only small cores of rock and ice. Therefore, it is known as a gas giant.


9. The bodies glowing in the night sky are known as _____ ?

Celestial bodies

Asteroids

Planetarium

Meteorite

Answer: Celestial bodies

Explanation:

Celestial Bodies : A celestial body can be defined as any natural body outside of the Earth's atmosphere. Celestial bodies or heavenly bodies are objects in space such as the sun, moon, planets and stars.


10. Which one of the following is the largest recognised constellation ?

Hydra

Dorado

Antilla

Crux

Answer: Hydra

Explanation:

Hydra is the largest of the 88 modern constellations, measuring 1303 square degrees, and also the longest at over 100 degrees. Its southern end abuts Libra and Centaurus and its northern end borders Cancer.