Hw homework science aman.pptx mmmm
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  • Hawaiian Eruption <br />  

Hw homework science aman.pptx mmmm Hw homework science aman.pptx mmmm Presentation Transcript

  • INTEGRATED PROJECT Science Volcanic Eruptions
  • IN THIS PPT WE WILL SEE  INTRODUCTION [HOW DOES VOLCANIC ERUPTIONS OCCUR]  TYPES OF VOLCANIC ERUPTIONS  SOME IMAGES OF TYPES OF VOLCANIC ERUPTIONS  PREDICTING ERUPTIONS  AMAZING FACTS
  • INTRODUCTION  What causes Volcanos? OR How does it occurs?  Volcanic activity frequently occurs at the boundaries of the Earth's tectonic plates which are a series of large blocks moving between each other. The movement of these plates plays a significant role in the type of volcano formed, which influences its shape.
  • TYPES OF VOLCANIC ERUPTIONS The most common type of volcanic eruption occurs when magma (the term for lava when it is below the Earth's surface) is released from a volcanic vent.  Eruptions can be effusive, where lava flows like a thick, sticky liquid, or explosive, where fragmented lava explodes out of a vent.  In explosive eruptions, the fragmented rock may be accompanied by ash and gases; in effusive eruptions, degassing is common but ash is usually
  • SOME OTHER KINDS OF VOLCANIC ERUPTIONS ARE - Hawaiian Eruption Strombolian Eruption Vulcanian Eruption Plinian Eruption Lava Domes Surtseyan Eruption
  • AMAZING FACT  Some famous volcanic eruptions of modern times include Mount Krakatoa in 1883, Novarupta in 1912, Mount St Helens in 1980 and Mt Pinatubo in 1991.  While we certainly have some big volcanoes here on Earth, the biggest known volcano in our solar system is actually on Mars. Its name is Olympus Mons and it measures a whooping 600km (373 miles) wide and 21km (13 miles) high.