دانلود پاورپوینت لاتین آتش فشان ها volcanos

دانلود پاورپوینت لاتین آتش فشان ها volcanos

دانلود پاورپوینت لاتین آتش فشان ها volcanosتعداد اسلاید :  8قسمتی از متن اسلاید ها : Volcanoes are often cone-shaped, but they can take other shapes too. They are formed when molten, sticky rock called magma, forces its way through a crack in the Earth’s crust.  The melted rock that spills out of the crater on the top of the volcano is called lava. The lava destroys everything in its path because it is very, very hot!