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5204
Lv 6
5204 asked in Science & MathematicsAstronomy & Space · 1 decade ago

How far would that be on the timeline?

According to modern astronomy, the universe is about 14 billion years old. Suppose you represent this age with a timeline 100 meters long. What distance along the timeline represents 1 billion years? Written human history extends back about 10,000 years. How far would that be on the timeline?

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  • Matt E
    Lv 4
    1 decade ago
    Favorite Answer

    so....

    14billion years = 100m

    1 billion years = X m

    14/100 = 1/x

    x = 100/14 = 7.----m

    10,000 years = 0.00001 billion years

    do the ratio thing again

    14/100 = 0.00001/x

    x= 0.00007m = 70nm

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