Question

when lava cools at earth's surface what type of igneous rock is formed

Answer 1

Igneous rocks form when molten rock cools and becomes solid. Molten rock is called magma when it is below the Earth’s surface and lava when it is above.

Answer 2

Igneous rocks that form below the Earth’s surface are called intrusive igneous rocks (or plutonic). They form when magma enters an underground chamber, cools very slowly, and forms rocks full of large crystals.

Answer 3

Igneous rocks that form above the Earth’s surface are called extrusive igneous rocks. These rocks, also called volcanic rocks, form when lava cools quickly at or above the Earth’s surface.

Answer 4

SOURCE: http://www.windows2universe.org/earth/geology/ig_intro.html