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    #1

    The perpetual motion of the earth as it turns on its axis creates the change of

    The perpetual motion of the earth as it turns on its axis creates the change of seasons.

    The above sentence is grammatically correct. But its concept seems scientifically incorrect. Do you agree?
    I need native speakers' help.

  1. Raymott's Avatar
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    #2

    Re: The perpetual motion of the earth as it turns on its axis creates the change of

    It's incomplete. I think it would be true to say that the seasons (and hence the change of seasons) would not occur if the earth did not turn perpetually on its axis.

  2. MikeNewYork's Avatar
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    #3

    Re: The perpetual motion of the earth as it turns on its axis creates the change of

    It is not the daily rotation of the earth that causes a change of seasons. That causes the change of sunlight in a day. What causes the change of seasons is a tilt in the earth's axis. The axis tilt changes the orientation of the earth with respect to the sun as the earth orbits the sun.

    http://earthsky.org/earth/can-you-ex...s-four-seasons

  3. Raymott's Avatar
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    #4

    Re: The perpetual motion of the earth as it turns on its axis creates the change of

    Yes, I didn't think enough before I answered that. The earth would still have seasons even if it didn't spin on its axis, assuming other factors remained the same.

  4. MikeNewYork's Avatar
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    #5

    Re: The perpetual motion of the earth as it turns on its axis creates the change of

    No worries. It happens to all of us.

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    #6

    Re: The perpetual motion of the earth as it turns on its axis creates the change of

    I was going to say that there is no such thing as perpetual motion. The earth will stop spinning one of these days.

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    #7

    Re: The perpetual motion of the earth as it turns on its axis creates the change of

    If it didn't turn, we'd have 180-day "days" and it would get insanely hot during the day and insanely cold at night. I don't think we'd think of seasons the same way. "Winter is coming" would have a whole new meaning.
    I'm not a teacher, but I write for a living. Please don't ask me about 2nd conditionals, but I'm a safe bet for what reads well in (American) English.

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    #8

    Re: The perpetual motion of the earth as it turns on its axis creates the change of

    What does one of these days mean?
    I need native speakers' help.

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    #9

    Re: The perpetual motion of the earth as it turns on its axis creates the change of

    Quote Originally Posted by sitifan View Post
    What does one of these days mean?
    http://idioms.thefreedictionary.com/one+of+these+days

    Someday, or eventually.

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