Igneous rock that cools below Earth's surface 

A Pluton is a type of igneous rock that cooled inside the crust. 

An igneous rock texture that indicates the presence of gas bubbles. 

Igneous rock texture in which there are both large and small crystals indicating that the magma cooled partially below the Earth's surface prior to eruption. 

Lava that cooled extremely rapidly may have a glassy texture. 

What are the properties of a mafic igneous rock? 

Which is more viscous? 

Magma composition determines 

Felsic magma is less viscous and does not erupt violently. 

the thickness of a liquid and its resistance to flow

What type of rock form at volcanoes? 

Which of these can become a metamorphic rock? 

Flat layers that form in metamorphic rocks as they are squeezed by pressure 

All that is needed to create metamorphic rock is enough heat and/or pressure to change the composition but not melt the existing rock. 

The type of metamorphism that occurs over a large area. 

Changes in a rock that is due to contact with magma is called regional metamorphism.