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Science-Grade 9 > Light Years & Astronomical Units (Oct.20) > Flashcards

Light Years & Astronomical Units (Oct.20) Flashcards

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1
Q

What is an astronomical unit(AU) used for?

A

It is used to measure distances within the solar system.

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2
Q

What does 1 AU equal to?

A

1 AU= 150 million km

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3
Q

What is a light year (LY) used for?

A

It is used to measure distances outside the solar system. The LY is equal to the distance travelled by light in one year.

1 LY= 9460 000 000 000 km
1 LY= 9460 billion km

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Science-Grade 9 (24 decks)

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