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You Are Currently Moving at about 1,000 mph!

Updated on February 18, 2014

Imagine yourself being hurled through space at hundreds of miles per hour. Well, you actually are. The Earth spins on its axis every day at a little over 1,000 mph. Yet, the Earth not only rotates on its own axis, the Earth also has different rotations known as Milankovitch Cycles. They include the Earth's tilt, the Earth's wobble, and the Earth's orbital path around the sun.

Milankovitch Cycles- not to scale
Milankovitch Cycles- not to scale

Tilt

Imagine a common globe found in a classroom. The globe never stands straight up and down; it is always tilted. This tilt actually represents the Earth's tilt, known as obliquity. The Earth's obliquity works on a cycle that is about 40,000 years. This means the Earth's tilt is either more toward the north pole or more toward the equator during these 40,000 years.

Wobble

Now imagine a spinning top. As the top begins to slow down the north pole begins to wobble in a circle that becomes larger and larger until the top hits the floor. The Earth's wobble, or precession, is similar; however, the Earth will never hit the imaginary floor. In fact, the Earth's precession works on a cycle that is roughly 20,000 years long. So, during this 20,000 years, the Earth's wobble is either more wobbly or less wobbly.

Orbit Around the Sun

Now, I am sure many of you know that the Earth travels around the Sun; however, the Earth's orbit around the Sun, or eccentricity, is not exactly circular. In fact, the Earth's eccentricity is actually more oval shaped and has a cycle of about 100,000 years. During this 100,000 years, the Earth is either closer to the sun or farther from the sun; however, it is still making one orbit around the sun each year.

Eccentricity- not to scale
Eccentricity- not to scale

Do you know why the seasons occur?

Why does the Earth have seasons, ie. Spring, Summer, Fall, and Winter?

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The Earth System (3rd Edition)
The Earth System (3rd Edition)

Excellent, Excellent book on how the Earth works.

 
Earth's Climate: Past and Future
Earth's Climate: Past and Future

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Atmosphere, Ocean and Climate Dynamics: An Introductory Text (International Geophysics)
Atmosphere, Ocean and Climate Dynamics: An Introductory Text (International Geophysics)

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Answer to Poll Question

Although the answer may appear to be the Earth's eccentricity, or the orbital path around the sun, the answer is the Earth's tilt. At certain times of the year the top half, or northern hemisphere is more directly pointed towards the sun and at other times the bottom half, or southern hemisphere is more directly pointed towards the sun. These variations in obliquity cause the seasonal changes on Earth.

You Are Still Moving Incredibly Fast

Next time you are laying on the couch at home watching TV and someone says, "Get up and move around!" You can tell them, "I am moving! I am moving at about 1,000 mph right now!!" And, in fact, you are not only moving at 1,000 mph with the planet, you are also moving around the sun too.

© 2012 morningstar18

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    • morningstar18 profile image
      Author

      morningstar18 5 years ago from Albuquerque, New Mexico

      :) Thanks. I made the graphics myself and tried to go as simply as possible. Cartoon graphics are always easy to understand. I know exactly what you mean in reference to the metric system. I'm planning on using both units of measurement in my next piece.

    • f_hruz profile image

      f_hruz 5 years ago from Toronto, Ontario, Canada

      Welcome to HubPages - very nice graphics!

      The metric question is exactly that much more of a reason to help them along to get with it a bit quicker before they get left behind totally in this world ... :)

    • morningstar18 profile image
      Author

      morningstar18 5 years ago from Albuquerque, New Mexico

      Thank you for reading my hub. I am new to hubpages. I would have used metric units; however, here in the U.S. most people do not understand metric units. I appreciate the feedback though.

    • f_hruz profile image

      f_hruz 5 years ago from Toronto, Ontario, Canada

      Good work, but would have been more current had you used metric units!