what is lava? why does a volcano erupt?
Answers
Answer:
Since it is lighter than the solid rock around it, magma rises and collects in magma chambers. Eventually, some of the magma pushes through vents and fissures to the Earth's surface. Magma that has erupted is called lava. ... When this type of magma erupts, it flows out of the volcano.
Explanation:
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Answer:
what is lava?
Hot molten or semi-fluid rock erupted from a volcano or fissure, or solid rock resulting from cooling of this.
Explanation:
why do volcano erupt?
a.The rock inside the planet we live on can melt to form molten rock called magma. This magma is lighter than the rocks around it and so it rises upwards. Where the magma eventually reaches the surface we get an eruption and volcanoes form.
b.Volcanic eruptions produce three types of materials: gas, lava, and fragmented debris called tephra.