Which kind of rock is formed when lava leaves a volcano and cools
insidious rocks
Plate Tectonics and the Rock Cycle Quick Check
1. Igneous D
2. Convection C
3. Convergent plate boundary interaction
4. The crust is like the shell on a hard-boiled egg.
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Answers:
1 Igneous
2 convection
3 convergent plate boundary interaction
4 the crust is like the shell on a hard boiled egg
The kind of rock that is formed when lava leaves a volcano and cools is known as igneous rock. To understand why lava cools and forms igneous rock, let's break down the process:
1. When a volcano erupts, it releases molten rock called lava onto the Earth's surface. Lava is the liquid form of magma, which is a mixture of molten rock, gases, and minerals found beneath the Earth's surface.
2. As lava flows out of the volcano, it is exposed to the cooler temperatures of the Earth's atmosphere.
3. When the lava comes into contact with the cooler air or surrounding rocks, it loses heat rapidly. This quick cooling causes the lava to solidify and harden into solid rock.
4. The speed at which the lava cools affects the size of the mineral crystals that form within the rock. If the cooling is rapid, the resulting igneous rock will have small crystals, referred to as fine-grained. On the other hand, if the cooling is slower, larger crystals will have time to grow, resulting in a coarse-grained igneous rock.
5. The specific type of igneous rock that forms depends on the chemical composition of the lava. For example, basalt is a common type of igneous rock formed from lava with low silica content, while rhyolite is formed from lava with high silica content.
So, lava that cools and solidifies outside the volcano forms igneous rock, which can be further categorized based on its cooling rate and chemical composition.