Metamorphic Rock Review

How does a metamorphic rock form? 

• Form from lava that erupted onto Earth’s surface and cools & hardens

• Forms when small particles of rock or remains from plants and animals are pressed and cemented together

  
  

• Forms when a rock is changed by heat and/or pressure

  
  

• Forms when magma hardens beneath Earth’s surface

  
  

What two factors are going to be involved with changing rock into metamorphic? 

• heat, erosion

  
  

• time, heat

  
  

• time, pressure

  
  

• heat, pressure

  
  

What happens to heat as you descend deeper into Earth? 

• increases

• decreases

• stays the same

Tags

NGSS.MS-PS1-4

What happens to pressure as you descend deeper into Earth? 

• increases

• decreases

• stays the same

High pressure can change rock into metamorphic. This can happen when

• Sediment settles out of water or wind into layers

• Earth’s plates colliding can push rock down toward the mantle, changing the rock

• Heat can come from magma that rises into colder rock

• Rapid cooling at or above the surface

High heat can change rock into metamorphic when 

• Sediment settles out of water or wind into layers

• Earth’s plates colliding can push rock down toward the mantle, changing the rock

• Heat can come from magma that rises into colder rock

• Rapid cooling at or above the surface

When grains are arranged in parallel layers or bands, this is what type of metamorphic rock? 

• foliated

• non foliated

• clastic

• extrusive

When mineral grains are arranged randomly, this is what type of metamorphic rock? 

• foliated

• non foliated

• clastic

• extrusive

Is this metamorphic rock foliated or non foliated?

• foliated

• non foliated

• neither

Is this metamorphic rock foliated or non foliated?

• foliated

• non foliated

• neither