Page 37 - Geography for Secondary Schools Student’s Book Form One
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Geography for Secondary Schools
                                                                          Student’s Book Form One











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                                      Figure 3.9: Phases of the moon



            (b)   Solar eclipse                        the sun is completely blocked it forms the
            The solar eclipse is also known as the     shadow called Umbra.
            eclipse of the sun. It occurs when the moon   Tanzania has witnessed solar eclipse in
            passes between the Earth and the Sun.      different times. For example, some parts
            The moon casts its shadow over the earth   of Tanzania witnessed a total eclipse of
                                                                    rd
            (Figure 3.10). Eclipse of the sun is partial   the sun on 23  October 1976. In addition,
                                                                                    th
            when only part of the earth is obscured    partial eclipses occurred on 19  April 1977
                                                                                              st
                                                              th
            by the shadow of the moon. The portion     and 14  October 2000. Meanwhile on 1
            of the shadow that results when the light   September, 2016, a total solar eclipse was
            from the Sun is partially blocked is called   witnessed in Rujewa, Mbarali District in
            Penumbra. Moreover, when the light from    Mbeya Region.


                                                   Moon     Umbra



                       Sun                                      Earth




                                                          Penumbra


                                         Figure 3.10: Solar eclipse



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