Why do extrusive igneous rock have air pockets and intrusive igneous rocks don't?

Answer 1

they have air pockets becuase they form so quickley' that air pockets get trappped inside of them' while intrusive rocks take time to form & no air pockets are able to get into them- learned it straight from science class ;)

Answer 2

Most magma, or underground molten rock, contains gasses. When this rock is underground, high pressure keeps the gas dissolved in the magma. If the magma cools underground, the gasses have no chance to leave the solution, and instead become part of the chemical makeup of the rock.

If the magma reaches the surface, the gas can escape and form bubbles.

Answer 3

Extrusive rocks cool quickly at the Earth's surface, trapping gases within the rock as it solidifies, forming air pockets. In contrast, intrusive rocks cool slowly beneath the Earth's surface, allowing gases to escape, leading to a more homogeneous texture without significant air pockets.

Answer 4

Many igneous rocks have bubbles in them because magma usually has at least some gas dissolved in it. When it erupts as lava that gas comes out as bubbles.

Answer 5

Because magma contains dissolved gases. When these near the surface, they come out of solution and the magma fizzes and explodes.

Answer 6

As the pressure on the magma decreases as it nears the surface, gas bubbles are able to form. Like a foaming bottle of pop when you remove the cap.