line up in the direction of Earth's magnetic field
line up in the direction of Earth's magnetic field
line up in the direction of Earth's magnetic field
Obsidian rock
When molten material cools and hardens, it is called solidification. This process occurs as the temperature drops, allowing the atoms or molecules to arrange themselves into a stable, solid structure. In the case of metals, this results in the formation of crystalline structures, while in other materials like glass, it may lead to an amorphous solid.
When molten rock solidifies it forms igneous rock.
Igneous
align with Earth's magnetic field, freezing the magnetic orientation of those minerals. This creates a record of the Earth's magnetic field at the time of cooling, which scientists can study to understand past changes in the planet's magnetic field.
The molten materials within the Earth are primarily composed of magma, which is a mixture of molten rock, gases, and minerals. This magma forms in the Earth's mantle and can rise to the surface during volcanic eruptions. Additionally, the Earth's outer core contains molten iron and nickel, contributing to the planet's magnetic field. Overall, these molten materials play a crucial role in geological processes and the formation of Earth's crust.
Molten rock that flows onto the seafloor and hardens as it cools is called basalt. Basalt is the most common type of lava erupted at mid-ocean ridges and forms the oceanic crust.
rock is melted to form molten rock, then as the lava hardens, it forms any type of igneous rock
When molten rock cools and hardens, it is a physical change because the composition of the rock remains the same. The change in state from liquid to solid does not alter the chemical makeup of the rock.
When molten material from beneath Earth's surface cools and hardens, it forms igneous rocks. Igneous rocks can be either intrusive (formed underground) or extrusive (formed on the surface), depending on where the cooling and hardening process occurs.