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sergeinik [125]
4 years ago
8

QUESTION 5 Chapter 3.2. What is effusive volcanism? O a When large amounts of ash are erupted out of a volcanic vent O b. When l

ava comes out of a vent or fissure and then spreads out over the landscape O c. when ejected volcanic rocks stream down the sides of volcanoes powered by hot expanding gas O d. When a volcano erupts hot gases that diffuse into the atmosphere QUESTION 6 Chapter 3.2. Table 3.2. What does the Volcanic Explosivity Index (VEI) tell you about a volcanic eruption? a. A description of how explosive it was O b. The volume of pyroclastic materials that were erupted cThe height of the cloud column erupted O d- All of the above QUESTION 7 Chapter 3.2.1. What is the difference between magma and lavai? OaNone, the two terms can be used interchangeably. O b. Magma is melted rock beneath the surface, while lava is melted rock on the surface. c. Magma is basaltic whereas lava is peridotite. O d. Magma is what is produced at mid-ocean ridges, while lava is what is produced at subduction zones.
Geography
1 answer:
Solnce55 [7]4 years ago
8 0

Answer:

QUESTION 5, the right option is c. when ejected volcanic rocks stream down the sides of volcanoes powered by hot expanding gas  

QUESTION 6, the right option a. A description of how explosive it was.  

QUESTION 7 b. Magma is melted rock beneath the surface, while lava is melted rock on the surface.  

Explanation:

  • Unlike explosive eruptions, effusive eruptions occur when magma reaches the surface and gently spills on the sides of the volcano. As dissolved gasses expand escapes easily prompts lava flows downhill.  
  • The Volcanic Explosivity Index (VEI) measures the explosiveness of a volcanic eruption taking into account the amount of pyroclastic material, including the explosion height as well as its duration.  
  • Magma refers to molten rock stored in a chamber inside the earth's crust when it reaches the surface through a vent, it is called lava. Thus, their main difference is a matter of location.  

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