Article on Igneous Rock

http://www.sciencedaily.com/articles/i/igneous_rock.htm

THANKS FOR BEING MARVALACE AND STOPPING BY :)

What is the rock Cycle Exactly?

The main idea is that rocks are continually changing from one type to another and back again.  Forces inside the earth bring them closer to the surface where they are weathered, eroded, and compacted, and forces on the earth sink them back down where they are heated, pressed, and melted. So the elements that make up rocks are never created or destroyed instead, they are constantly being recycled. 

The Three Main Types of Rocks

Igneous rocks form in two very different environments. All igneous rocks start out as melted rock, which is called magma, and then it crystallize or freeze. 

Metamorphic Rocks form when sedimentary, igneous, or other metamorphic rocks are subjected to heat and pressure from burial or contact with intrusive or extrusive igneous rocks.   In case you didn't know, "Meta" means change and "Morph" means form.

Sedimentary rocks are those rocks made up of pieces of other rocks.

Identify Each Class of Rock

Gneiss

Marble

 Basalt

Limestone

Conglomerate

Obsidian

Cool Rock Cycle Song!

The Rock Cycle Poem

Deep in the Earth;
From there I came.

Volcano erupted,
Now I'm not the same.

Magma to lava;
The thought is ingenious. 

Rock experts now;
Classify me as igneous. 

Pounded by sea, the tyrannical waves;
A few of my substance, occasionally saves. 

Now please don't go too far;
On your sentiment. 

I've merely become;
What is called "sediment." 

I might scrape up the toe;
Of an unaware jock.

Once I harden to be;
Sedimentary rock. 

Add heat and some pressure;
I'll show you one more trick. 

When suddenly;
My name is "Metamorphic."

The heat then grew greater;
I melted inside. 

And back into the Earth;
As magma I ride. 

Some doubt if I ever;
Will see you again. 

However, the Rock Cycle;
Determines when

Who Doesn't Like Recycling??

The rock cycle describes the transitions among the three main rocks: sedimentary, metamorphic, and igneous. The main idea is that rocks are continually changing from one type to another and back again.  Forces inside the earth bring them closer to the surface where they are weathered, eroded, and compacted, and forces on the earth sink them back down where they are heated, pressed, and melted. So the elements that make up rocks are never created or destroyed instead, they are constantly being recycled. 

Rock Cycle Rap

Igneous rocks are formed when magma (molten rock deep within the earth) cools and hardens. Sometimes the magma cools inside the earth, and other times it erupts onto the surface from volcanoes (in this case, it is called lava). When lava cools very quickly, no crystals form and the rock looks shiny and glasslike. Sometimes gas bubbles are trapped in the rock during the cooling process, leaving tiny holes and spaces in the rock.