Igneous rock forms when rock melts and then crystallizes.

Igneous rock forms when rock melts and then crystallizes.

When rock melts below Earth's surface, the rock becomes magma. Magma can rise to the surface through cracks in Earth's crust. Magma that reaches Earth's surface is called lava. When lava or magma cools, it solidifies by crystallizing to form igneous rock.
Igneous rocks commonly form at volcanoes, such as the Mauna Loa volcano in Hawaii.

Order the following events to describe how igneous rock can form at Mauna Loa.
Lava erupts from Mauna Loa and flows down the
volcano.
Rock beneath Mauna Loa melts to form magma.
Ocean water cools the lava, causing it to crystallize and
rorm ianeous rock.
Melted rock rises toward Earth's surface.
Lava flowing down the volcano enters the Pacific Ocean.