Page 192 - (DK) I Can’t Believe It! 2
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190
           How long would it
                    take to fall to the
                                                                        Earth’s crust consists     types of rock on land     and under the sea.
                                 Even though it is a physical impossibility,
                                     calculations suggest it would take about
                                         19 minutes to fall to Earth’s core, traveling
                                                      Why is it impossible? First, no one could dig  a tunnel through Earth to its core. This calculation  also assumes there is no air resistance in the tunnel:  resistance would make the falling speed slower.  Finally, if someone actually made it close to the  center of Earth, the
                             center of Earth?
                                             at up to 18,000 mph (29,000 kph).
























































   US_190-191_309600_Fall_Through_Earth.indd   190                        20/12/17   5:31 pm
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