Which one of the following statements is false?
A)
Mechanical weathering is important in the formation of talus slopes
B)
Mechanical weathering involves a major change in the mineral composition of the
weathered material
C)
Mechanical weathering allows for faster rates of chemical weatherin...
Complex multicellular organisms were not present in which Era
A)
Neogene
B)
Paleo-Proterozoic
C)
Mesozoic
D)
Precambrian
✓✓✓✓~ Neogene
For a billion years or more, oxygen being produced by cyanobacteria was
completely consumed in the process of
A)
,The creation of chlorophyll
B)
The creation of phospholipid membranes on clay surfaces
C)
The precipitation of iron from the ocean waters
D)
Coal formation
✓✓✓✓~ The precipitation of iron from the ocean waters
Which of the following igneous rocks is thought to be common in the Earth's
mantle but rare in the crust?
A)
pegmatite
B)
pumice
C)
peridotite
D)
,granite
✓✓✓✓~ peridotite
What is the most common extrusive rock type for any volcanic environment on
the Earth or even on the Moon?
A)
andesite
B)
obsidian
C)
rhyolite
D)
basalt
✓✓✓✓~ basalt
Three processes contribute to the formation of every igneous rock:
A)
partial melting, buoyant rise, and crystallization
, B)
assimilation, crystallization, and dyke injection
C)
volcanism, plutonism, and magmatic differentiation
D)
extrusion, intrusion, and consolidation
✓✓✓✓~ partial melting, buoyant rise, and crystallization
Which of the following high silica igneous rocks can be of low enough density to
float on water
A)
obsidian
B)
granite
C)
rhyolite
D)
pumice
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