Igneous Rock

Felsic igneous rocks (the lightest in color) are comprised mostly of quartz and potassium feldspar. Intermediate igneous rocks (somewhat darker than felsic) are made up of some quartz and potassium feldspar, but mostly plagioclase feldspar.

Baslatic magma is hotter.

When magma cools underground, it creates intrusive rocks (intrusive=inside the earth). Intrusive rocks are coarse-grained and have visible mineral crystals. This happens because the magma cools slowly over a long period of time, giving these crystals time enough to form in a visible fashion. On the other end, we have extrusive rocks. These cool at the surface and have much smaller, usually 'invisible' crystals. This happens because the magma cools much, much faster, which of course doesn't give the crystals ample time to form.

Because that is the very definition of igneous rock.

Weathering, erosion, deposition, compaction, and cementation.

Igneous rocks [fire rocks] are formed either underground or above ground. Underground they are formed when the melted rock [called magma] deep within the earth becomes trapped in small pockets, and as these pockets of magma cool slowly underground the magma becomes igneous rocks. Igneous rocks are also formed when volcanoes erupt causing the magma to rise above the earth's surface. When magma appears above the earth, it is called lava. Igneous rocks are formed as the lava cools above ground. Examples of igneous rocks are granite, scoria, pumice, obsidian and basalt.

intrusive

Rocks formed by the cooling and solidifying of molten materials.

Igneous rocks have different textures for two reasons.
The first reason is that the magma from which the igneous rocks were made can be acid (having a lot of silica in it like Granite) or basaltic (having less silica and a lot more dark minerals). The acidity of a magma has a great affect on the viscosity of the lava and this affects the texture of the rocks formed.
The second (and more important) reason relates to the speed with which the magma cools. If the magma cools quickly the crystals are small and the rocks are fine textured. If the magma cools slowly the rocks end up with big, course grained crystals.

yes. magma is melted rock that is still underground while lava is melted rock above ground

inertia: the tendency of an object to resist a change in its motion

If a light rock is being thrown at a heavy rock the light rock would probably crack or get deflected from the heavy rock, but if a heavy rock is being thrown at a light rock the light rock would most likely shatter.

A: The heavy rock has more inertia

contact metamorphism

Relative age can be determined using superposition and cross-cutting relationships.

Absolute age can only be determined using radiometric dating methods, such as Rb-Sr.

Anthracite is a metamorphic rock, not a sedimentary or igneous rock. It forms from the metamorphism of bituminous coal, under high pressure and temperature conditions deep within the Earth's crust.

felsic, intermediate, mafic, and ultramafic.

No reaction occurs.

Obsidian is an igneous rock. Rocks are not man-made. Man-made substances that are similar to rock include concrete and cement.

obsidian rock

They can be formed underground or above ground. Underground, they are formed when melted rock, called magma, deep under the earth's surface is trapped in small pockets. As these pockets of magma cool slowly underground, the magma develops into igneous rocks.

Igneous rocks are also formed when volcanoes erupt, causing the magma to rise above the earth's crust. When magma appears above the earth, it is called lava. Igneous rocks are formed as the lava cools above ground.

because it's amazing and colorful if you paint it

Produced under conditions involving intense heat, igneous rock is rock formed by solidification from a molten state, especially from molten magma.

an igneous rock is a lava rock that has cooled!

No. A rock go from any one of the three types to any other or even back to the same type. Any rock can be re-melted to form magma, any rock can be weathered into sediment, and most rocks can undergo metamorphism. The once exception would be high-grade metamorphic rocks, which form at such high temperatures that any further heating would melt them.

Olivine does not contain Gabbro. Gabbro can contain olivine. Usually no more than a few percent.

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It takes a very long time (millions of years) and occurs at high pressure deep within dense sediments. Igneous rocks form from magma or lava, then are slowly eroded into tiny particles (sand, silt, clay) that when buried and compressed may form a hard sedimentary rock. The time scale can be from millions to hundreds of millions of years.