Class 9 Science Universe Part 1 | What is Astronomical Unit | Distance between earth and sun 1AU
Channel: Sujan Dahal - A for Astronomy
Date: 2022-08-18

This video is the first video of video series of Class 9 Science book "Chapter - Universe". I have created this video to make students understand about Astronomical Unit. I have introduced my new character "Chandrakanta" who actually is student of class 9 and he is very curious about science terms. Hope you like this character. He shall stay with us throughout the journey of this chapter. 
#class10science #AstronomicalUnit
Some important questions.

1) Define 1 AU(Astronomical Unit)?
Ans: The distance between the sun and the moon is called 1 AU.

2) What is the value of 1AU(Astronomical Unit)?
Ans: Approximately 15 crore kilometers or 1.5x10¹¹ meters or 1.5x10⁸ km. 

3) "Astronomical Unit(AU)"is the unit of?
Ans: It is the unit of distance.

4) How far is Jupiter from the sun in AU?
Ans: 5.2 AU or 5.5 AU

5) How far is Neptune from the sun in AU?
Ans: 30 AU 

6) Why is AU important?
Ans: AU is important to measure the distance between any star and it's planets, which is not practically possible with kilometers.

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Watch some other related videos:
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Thank you!