_ is a climate cycle where the temperature of the _ Ocean changes because of movements of air and ocean currents. During this period, trade winds in the south _ , causing the _ water to move from the _ region to the _ region.

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imagine a line passing through the center of earth that goes through both the north pole and the south pole. this imaginary line is called an axis. earth spins around its axis, just as a top spins around its spindle. this spinning movement is called earth's rotation. at the same time that the earth spins on its axis, it also orbits, or revolves around the sun. this movement is called revolution.