Minerals
Minerals are naturally occurring, uniform and _______________
Inorganic
Rocks are made of _______________
Minerals
What are the 3 types of rocks
Sedimentary, Igneous, metamorphic
The oldest rocks are on the ___________ this is known as the law of ___________________
What is the the time is takes half of a parent isotope to change to the daughter isotope called?
Half-life
Which mineral is non-metallic, softer than glass, shows cleavage and breaks in dark flaky sheets
Biotite
Rocks made of many minerals are called
Polyminerallic
This rock forms from the solidification of magma or lava
Which rock layer is the oldest? Diagram 1
Layer C, Rock outcrop 2
What is the half life of Potassium 40?
1.3 billion years
Which mineral is metallic, has no cleavage, a hardness of 5-6 and is brittle
Hematite
In Bowen's reaction series which mineral crystallizes at 1400 degrees C
Olivine
Name a Coarse grained, Felsic igneous rock that has quartz and Potassium feldspar
Granite
Which is the best index fossil? (Diagram 2)
Fossil 3
How many half-lives have passed to have 12.5% of C14 left in a sample?
3
What is the hardness of a penny?
3.5
What minerals are not in a felsic rock
Quartz, Biotite, or Pyroxene
Pyroxene
This rock forms from heat and/or pressure without melting
Metamorphic
What is the correct sequence of events A, B, C, D and E in diagram 3?
C, B, A, D, E
As the amount of the parent isotope decreases the amount of the daughter isotope __________
increases
Defined as the way light reflects of a freshly cut surface of a mineral
Luster
Diorite is an example of which type of igneous rock
Felsic, Intermediate, Mafic or Ultramafic
Intermediate
This Rock forms from weathered remains of other rocks that are buried and compacted
Sedimentary
How do I know the Fault came after the intrusion in diagram 3?
The intrusion is broken or shifted due to the Fault.
How many years have passed if there is 6.25% of Potassium 40 left in a sample
5.2 billion years