Igneous Rocks

Igneous rocks are made from what?

• cooled lava

• other organic material

• other sand and rocks

• other rocks changed by heat and pressure

Extrusive igneous rocks are rocks that

• weathered and eroded

• formed from cooled lava in the crust

• formed from compaction and cementation

• formed from cooled lava on the crust

Intrusive igneous rocks are rocks

• formed from lava cooling inside of the crust

• often have air bubbles/holes in the rocks from quickly cooling

• formed from lava cooling on top of the crust

• can be considered foliated or non foliated.

which of the following is not a common location where igneous rocks would form

• volcano

• mid-ocean ridge

• hot spot

• subduction zone

what characteristic is common of an intrusive igneous rock

• glassy looking

• crystals

• air bubbles

• can see rocks other rocks within the rock

what characteristic is common on extrusive igneous rocks

• crystals

• folliations

• visible sediment in the rock

• air bubbles/holes

What type of rock is this?

• Intrusive
• Extrusive

Where is magma?

• inside 
• outside

Is lava above or below ground

• below
• above

What characteristic does this rock have

• crystals

• glassy

• folaitions

• instrusions