Download 1.Identify this rock.

1.Identify this rock.
A.
B.
C.
D.
E.
Gabbro
Quartz
Biotite
Granite
Rhyolite
2. What would be a place to expect to find this rock.
A. Hawaii
B. Cascade Mountains in Washington
C. Great Barrier Reef
D. Texas Hill Country
E. East Texas Pineywoods
3. What rock is this?
A.
B.
C.
D.
E.
Orthoclase
Biotite
Granite
Rhyolite
Rose Quartz
4. Which rock was exposed by
erosion long after it had cooled
deep in Earth’s crust?
A.
B.
C.
D.
E.
Olivine
Pumice
Basalt
Rhyolite
Granite
5. What kind of rock might form
from this lava once it cools?
A.
B.
C.
D.
E.
Magma
Granite
Rhyolite
Basalt
Pyroxene
6. Use the Bowen’s Reaction
Series to predict what kind of rock
would form from a magma that
crystallizes at a high temperature
deep in Earth’s crust.
A.
B.
C.
D.
E.
Granite
Peridotite
Pumice
Obsidian
Rhyolite
7. Identify this rock.(Hints: it’s silicarich and floats on water.)
A.
B.
C.
D.
E.
Pumice
Basalt
Scoria
Granite
Peridotite
8. Which kind of magma would
most likely form obsidian?
A.
B.
C.
D.
E.
A silica-rich magma
that’s cooled instantly.
A silica-rich magma
that’s cooled slowly.
A silica-poor magma
that’s cooled instantly.
A silica-poor magma
that’s cooled slowly.
None of the above
9. This is Enchanted Rock, northwest of
Fredericksburg. What kind of igneous rock
would you most likely find here?
A.
B.
C.
D.
E.
Arenite
Basalt
Rhyolite
Granite
Peridotite
10. What process could have
formed this rock?
A. Volcanic eruption
B. Evaporation
C. Plankton being
buried &
compacted
D. Mountain-building
as two continents
collided.
11. What would NOT be considered
a type of coal?
A.
B.
C.
D.
E.
Anthracite
Bituminous
Lignite
Peat
Carbide
12.Identify
A.
B.
C.
D.
E.
Andesite
Basalt
Pumice
Diorite
Granite
13. Which formation would most
likely contain columnar basalt?
A.
Composite
volcano
B.
C.
D.
Cinder
cone
Laccolith
Volcanic
Neck
14. This metamorphic rock – made
up entirely of quartz - was once…
A.
B.
C.
D.
Shale
Slate
Sandstone
Schist
15. Which texture best describes
this rock?
A. Finegrained
B. Coarsegrained
C. Volcanic
Glass
D. Porous
16. Use the Bowen’s Reaction
Series to predict what kind of rock
would form from a magma that
crystallizes at a low temperature at
Earth’s surface.
A.
B.
C.
D.
E.
Granite
Peridotite
Pumice
Obsidian
Rhyolite
17. Identify
A.
B.
C.
D.
E.
Gabbro
Granite
Obsidian
Andesite
Rhyolite
20. Use the Bowen’s Reaction
Series to find which mineral is the
first to come out of solution in a
magma?
A. Quartz
B. Olivine
C. NaPlagioclase
D. Orthoclase
E. Muscovite
21.Which rock would most likely be
ejected from this eruption?
A.
B.
C.
D.
E.
Pumice
Basalt
Granite
Diorite
Gabbro
22. What element is present in
scoria that makes it darker and
heavier than pumice?
A.
B.
C.
D.
E.
Al
Na
Ca
K
Fe
23. This is a sketch of a
geological cross-section
nearby, in Washington
County. At what elevation
would one be sitting on a
pile of volcanic ash?
A.
B.
C.
D.
E.
1 meter
10 meters
15 meters
24 meters
30 meters
24. Which situation would produce
rocks with a fine-grained texture?
A.
B.
25.What sedimentary rock would
most likely form from this
environment?
A.
B.
C.
D.
Sandstone
Breccia
Coal
Dolomite
26. This is a sketch of a
geological cross-section
nearby, in Washington
County. At what elevation
would one be sitting on an
ancient sand dune?
A.
B.
C.
D.
E.
1 meter
10 meters
15 meters
24 meters
30 meters
27. Where on this geologic map
might metamorphic rocks be
expected to be found?
A.
B
C.
D.
28. This rock was found in Central
Texas. It indicates the existence of
_____________ in Texas’
geological past.
A.
B.
C.
D.
Plutons
Lava Flows
Violent eruptions
Hydrothermal vents
29. This is Pilot Knob, an extinct volcano located just
southeast of Austin. The volcano is composed of basalt.
What does this indicate about this part of Central Texas at
the time this volcano was active?
A. It was a desert
area.
B. It was covered in
glaciers.
C. It was at the
bottom of the sea.
D. It was rainforest
30. This is Sideling Hill in Maryland.
Which of Steno’s Laws is BEST
demonstrated here?
A. Law of
Superposition
B. Law of Original
Horizontality
C. Law of Crosscutting
Relationships
D. Principle of
Unconformities
31. What geologic process is being
depicted here?
A.
B.
C.
D.
Metamorphism
Volcanism
Erosion
Deposition
32. The series of
yellow, brown,
green, & blue
bands
represent
different types
of …
A. Granite
B. Gneiss
C. Slates &
Schists
D. Basalts
33. These are photos of fresh lava
recently erupted along the East
Pacific Rise. What rock might it be?
A.
B.
C.
D.
Rhyolite
Gabbro
Peridotite
Basalt
Obsidian Butte Obsidian Butte is a single dome of rhyolite. At the coordinates, the
dome is made up of gray to black rhyolite pumice and obsidian. Pumice is a light
air-filled volcanic glass. It can be described as a rock sponge because of the
rock is filled with frozen gas bubbles. Pumice forms during explosive eruptions
when volcanic gasses that were dissolved in the magma suddenly come out of
solution and the magma cools quickly to trap the shape of the bubbles. The
effect is similar to the results of a shaken carbonated drink after you open it and
the foam instantly freezing. Other types of magma will also form pumice.
Elsewhere on the dome you will find rhyolitic breccia.
Some areas of the dome have obsidian. Obsidian is a dense volcanic glass.
Obsidian forms under similar situations as pumice, but there is not as much gas
dissolved in the magma, so the glass form a dense mass. Obsidian usually
forms from rhyolitic lava. The black color comes predominantly from tiny
minerals of magnetite trapped with in the glass. Obsidian fractures easily and
forms very sharp edges, so be careful.
34. What accounts for the differences between Obsidian and
Pumice?
A. Mineral Content
B. Metal Content
C. Cooling time
D. Pressure
E. Gas Content