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Why do most volcano have a mountain of hardened rock and ash around them?
When a volcano erupts, the lava that shoots up in the air(some times it just rolls down) it just doesn't stay in the air. Gravity pulls it down to Earth and the lava falls everywhere. Over a period of time, the lava hardens making mountains of igneous rock. Thank you, Gravity.
How does hot lava cool and harden?
Lava cools as anything else does; it loses heat to cooler surroundings. As it cools its atoms and ions slow down and are eventually locked in place by bonds with neighboring atoms an ions. The lava is essentially freezing.
Do cinder cones produce lava flows?
Yes. Although its typical eruptions produce simple lava flows, there have been cases where water came in contact with magma, triggering explosive eruptions with pyroclastic flows.
Is Pumice formed deep underground?
No. Pumice forms from gas-rich lava that is ejected into the air.
How egneous rocks are formed?
Igneous rocks are types of rocks that are formed by fire. They can be formed in the ground from magma that gets trapped in air pockets. Above ground they can form when lava cools along the ground.
Why do most volcano have a mountain of hardened rock and ash around them?
When a volcano erupts, the lava that shoots up in the air(some times it just rolls down) it just doesn't stay in the air. Gravity pulls it down to Earth and the lava falls everywhere. Over a period of time, the lava hardens making mountains of igneous rock. Thank you, Gravity.
Large blobs of magma that hardens in the air?
Firstly, it forms lava (liquid). When it hadens, it becomes a rock (solid).
What eruption does Mt St Helen's have?
The eruption that Mt St Helen has is an exploding volcano that shoots lava and rocks into the air.
How does hot lava cool and harden?
Lava cools as anything else does; it loses heat to cooler surroundings. As it cools its atoms and ions slow down and are eventually locked in place by bonds with neighboring atoms an ions. The lava is essentially freezing.
What is a lightly formed extrusive rock formed when lava cools so fast it traps pockets of air inside?
pumice
How do temperature pressure and fluid content affect the formation of magma?
The air affects magma. Once magma is released above ground, called lava, the air hardens it. While it is underground, the higher the temperature and pressure, the runnier the magma.
Does lava cool down in the air?
No. Lava heats up the air. In turn, the air cools the lava.
Do cinder cones produce lava flows?
Yes. Although its typical eruptions produce simple lava flows, there have been cases where water came in contact with magma, triggering explosive eruptions with pyroclastic flows.
Is Pumice formed deep underground?
No. Pumice forms from gas-rich lava that is ejected into the air.
What was formed from lava that was cooled with hot gases trapped inside causing it to be filled with air holes?
The rock will have little holes.
A light frothly extrusive rock formed when lava cools so fast that it traps pockets or air inside?
Pumice
How egneous rocks are formed?
Igneous rocks are types of rocks that are formed by fire. They can be formed in the ground from magma that gets trapped in air pockets. Above ground they can form when lava cools along the ground.
