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C. How does the earth move?

You know that the earth is shaped like a ball. You also know that the sun gives us light and we have days and nights. This happens because something moves. In earlier times people believed that the sun moved around the earth but scientists have proved that the earth moves or revolves around sun. The earth moves around like a spinning top. It turns on an "axis." This activity demonstrates what we mean by an "axis."

In this activity you will need:

  • An orange
  • short stiff piece of wire
  • a quarter

    Activity steps:

    1. Take the orange and roll it on a table. You will notice that the orange turns in different directions.

    2. Now push the wire through the center of the orange. While holding the wire upright, spin the orange around. This time the orange does not turn in different directions, but keeps spinning around on the wire, which represents its axis

    3. Now take the quarter and hold it on it’s edge. Snap it with your finger so that it spins on the table. The coin spins just like the orange except there is no wire through it. The coin is spinning on its axis.

    4. Imagine there is a line running through the coin like the wire that runs through the orange. The axis of the coin is the imaginary line on which the coin spins. The earth rotates on its axis too. The earth’s axis is an imaginary line through the center of the earth. The ends of this imaginary line are called poles. One end is called the North Pole. On the other end is the South Pole. (No, there are no actual poles at the top and bottom of the earth!)

    Attention Teachers and Parents! If you have a favorite activity you play with your child or students, please share them with us! Leave your activities or ideas on the Kid Positive message boards.

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