Explore topic-wise InterviewSolutions in .

Correct option is A) Universe

Mercury is visible in the morning and in the evening if it is away from the sun.

A number of depressions which are actually caused by meteoric falls are seen on the surface of mercury.

The Earth is known as Watery planet.

B) Georges Lemaitre

The Big Bang is how astronomers explain the way the Universe began. 

It is the idea that the Universe began as just a single point, then expanded and stretched to grow as large as it is right now – and it is still stretching.

Yes, there is a need to protect natural environment.Our environment gives us a lot of things to live mainly air, land and water.

Our life depends on so many non-living components. It is our duty to save our environment for making a happy life.

Ways to protect the environment : 

1. Choose reusable things. 

2. Recycle properly. 

3. Use few chemicals. 

4. Use less water. 

5. Use your purchasing power for good etc.

1. Oxygen leve! in industrial Area -19.5% 

2. Oxygen level in traffic area depends upon the traffic of the area. 

3. Oxygen Level in Greenery Area – 40 %

Reasons and suggestions: 

1. Carpool, use public transportation, bike, or walk whenever possible. 

2. Consider using gas logs instead of wood. 

3. Reduce or eliminate fire place and wood stove use. 

4. Avoid burning leaves, trash and other materials. 

5. Conserve energy – at home, at work, everywhere.

1. The International Astronomical Union (IAU) downgraded the status of Pluto to that of a dwarf planet because it did not meet the three criteria the IAU uses to define a full sized planet. 

2. Essentially Pluto meets all the criteria one – it has not cleared its neighbouring region of other objects.

Ancient Astronomer: 

1) Aryabhata -1: He is one of the greatest mathematicians and astronomers of ancient India.

2) Varahamihira : He is one of the ancient astrologer, astronomer and mathematician.

Modern Astronomers : 

1. Aluru Seelin Kiran Kumar 

2. Byrana Nagappa Suresh 

3. G. Madhavan Nair 

4. Jayant Vishnu Narlikar etc.

The Universe : The Universe is a vast space that contains many unimaginable elements. It includes the Sun, Planets, the Milky way Galaxy and all the other Galaxies.

1. 125 

2. Solar System 

3. 4.6 billion 

4. Ptolemy 

5. Nicolaus Copernicus 

6. On June 5^th 

7. Lithosphere

(b) Nicolaus Copernicus

Correct answer is (a) Mercury

1. 250 

2. 36 days 

3. Aryabhatta 

4. Harmonies 

5.8

Correct answer is (c) 2

A great number of small sized bodies could not turn into planets when the solar system was formed, but continued to revolve around the sun. This bodies are known as asteroids.

Mercury is the closet planet to the Sim. Mercury is the fastest moving planet.

Uranus axis is so greatly inclined that it , appears as if it is rolling along on its orbit.

The seasons on Neptune last for about 41 years.

Venus is seen in the sky in the east before the sunrise and in the west after the sunset. It rotates around itself from east to west.

Uranus axis is so greatly inclined that it appears as if it is rolling along on its axis.

As the earth is a magnet there is a magnetic field around the earth. It diverts the harmful rays from the sun towards the polar regions of the earth.

Saturn considered a peculiar planet because of the rings around it.

Olympus Mons is the highest and longest mountain in the solar system located on Mars.

The Jupiter is the largest planet of the solar system.

i. Local group

ii. ice and dust particles

iii. Uranus

iv. Jupiter

v. variable

i. Nebulae

ii. Jupiter

iii. Andromeda

iv. Venus

i. 50000°C

ii. temperature

iii. red

iv. brighter, larger

v. half, binary

i. Mandakini

ii. Milky Way

iii. Andromeda

iv. energy

v. Local group

c) Increasing vehicles