Igneous Rocks
What two things classify igneous rocks?
What are sedimentary rocks made of?
What are sediments
What turns igneous rocks into metamorphic rocks?
What is heat and pressure
What one thing can all rocks become at some point?
What is magma
What is the difference between coarse grained and fine grained?
Coarse grained = More visible crystals
Fine grained = Less visible crystals
What determines the size of the crystals that form in an igneous rock?
(or speed)
What two things make sediments?
What is weathering and erosion
What do you call the original rock before being exposed to heat and pressure?
What is a Parent Rock
True or False: Can only igneous rocks become metamorphic rocks from heat and pressure?
False: Sedimentary rocks can also become metamorphic rocks
What do foliated rocks have?
What are layers?
What makes igneous rocks lighter the more of it there is?
What is Silica (SO2)
What are the three rock types a sedimentary rock could be?
What are clastic, chemical & organic
What are thick visible layers called?
What are ribbon-like layers
What is the first type of rock magma must become in the rock cycle?
What is an igneous rock
What are the 3 main ways scientists use to classify rocks?
What is color, texture & density
Which type of igneous rock can contain vesicles?
What are extrusive igneous rocks
What one thing organism related, can be in sedimentary rocks but not in any other types?
What are fossils
What do metamorphic rocks become before becoming igneous rocks?
What is magma
What must sediments do before compacting and cementing?
What is deposition and burial
What is the main thing you see in metamorphic rocks that lets you know it is a metamorphic rock?
What are layers
Why do mafic rocks have a higher specific gravity (density) than felsic rocks?
The more metal there is
What occurs when acid rain falls on to a rock?
True or False: Can parent rocks have parent rocks themselves?
True
How many times can a rock go through the rock cycle?
Infinite
What is the visual difference between felsic and mafic rocks?
Felsic = Light colored
Mafic = Dark colored