Chlorine has many
different isotopes, but almost all chlorine
atoms are either chlorine-35 or chlorine-37. a
chlorine-36 isotope also exists. suppose your
job is to produce a brochure that compares
and contrasts these isotopes. list three
questions you would ask and answer in your
brochure.
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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.