If 2,000 atoms of 206Pb are found in a mineral sample, the how many helium atoms were produced?
16,000
Mount Fuji and Mount St. Helens in the
... [Show More] western United States are examples of__________
Stratovolcanoes
The color of a mineral's powder is known as_______
streak
Which of the following pairs does NOT go together?
Phyllite, High-grade metamorphism
Pumice and scoria are easily identifiable because of their_________ textures
Vesicular
The first minerals to crystallize as a magma cools tend to be________
Olivine & pryoxene? Calcium plagioclasts?
Uranium-238 radioactively decays into___________
None of the above/thorium-234
This is an unconformity where younger sedimentary rocks overlie older igneous or metamorphic rocks.
Disconformity
Which of the following is NOT true of the mineral quartz?
It is always colorless
How many years pass in four Carbon-14 half-lives?
22,920
The parent rock (i.e.,precursor) of marble is
Limestone
The most recent geologic period is the ____________
Cenozoic
Which mineral exhibits one plan of cleavage?
Muscovite
Which environment of deposition typically evidences poorly-sorted particles?
Glacial
High-temperature metamorphism caused by molten rock coming into contact with pre-existing rock is known as ________ metamorphism
Galena, pyrite, magnetite, and some varieties of hematite
This principle of relative dating states that in a sequence of sedimentary rocks, the oldest rocks are typically on the bottom with younger beds on top
The principle of superposition
This chemical sedimentary rock is composed almost entirely of tiny calcite spheres
Oolitic limestone
The decay chain for Uranium-238 consists of______ decay steps
21
According to your lab manual____________
The discovery of magnetic reversals was made by Motonori Matuyama
Desert environments might evidence which of the following
All of the above
An extremely coarse-grained igneous texture(>1cm across) is described as___________
Pegmatic
If schist undergoes additional metamorphism it will be changed into______
muscovite
Which of the following terms is NOT associated with hydrothermal metamorphism
Calcite Formation
Which of the following is a type of crystal form?
tetragonal
if a geologist correlates rocks based upon similar compositions and structures then he has performed _______ correlation
physical
Which of the following is NOT a type of fossil
all of the above are types fossils
Bituminous coal
Bituminous coal is an organic sedimentary rock formed by diagenetic and sub metamorphic compression of peat bog material. Its primary constituents are macerals: vitrinite, and liptinite.
Wegners proposed supercontinent was called
pangea
what mineral aligns itself with the earth magnetic field lines and can be used in paleomagnetic studies
plagioclase and pyroxene
The half-life of iodine-131 is 8 days. How much of a 100g sample will remain after 24 days
12.5g
New oceanic crust is being generated at
mid ocean ridges
The Mesozoic Era is known as the age of the ___________
Dinosaurs
This mineral is #5 on Moh's Hardness Scale
Apatite
Agents of metamorphism include__________
all of the above/heat, pressure (stress), and chemically active fluids. During metamorphism, rocks are often subjected to all three metamorphic agents simultaneously.
All metamorphic rocks exhibit foliation
false
Convergent boundaries typically exhibit only low-grade metamorphism
false
The fossil Mesosaurus helped Alfred Wegener argue his case for Continental Drift
True
Calcium carbonate rocks effervesce in the presence of hydrochloric acid
true
Minerals are naturally occurring inorganic solids
true
Granite is considered a mafic igneous rock
false
Shield volcanoes are typically composed of basaltic type rocks
true
Color is always a defining characteristics for mineral identification
false
Nico Steno was an old Earth creationists
false
It is common for quartz and olivine to be found in the same igneous rock
false
What is the highest tide that occurred on January 20, 2010
4.1 feet
What is the lowest tide that occurred on January, 20, 2010
.9 feet
What is the tidal range for January,20,2012
3.2 feet
What is the highest tide for the month of january,2010
6.8 feet
What is the lowest tide for the month of january 2010
-1.7
What is the tidal range for the month of january 2010
8.5
How low must the water height be relative to MLLW for elizabeth plan to leave the harbor
-.3
On which days in the first week of january 2010 could Elizabeth plan to leave the harbor
January 1,2,3,&4
If she misses her window of opportunity how many day will Elizabeth have to wait?
6 days
Which of the following is the definition of a shoreline
any area covered by sand
Which of the following is most responsible for existence of tides?
the gravitational attraction of the moon
A steady decreased in sea level following a high tide is called
ebb tide
A steady increase in sea level following a low tide is called
flood tide
when the sun and moon are aligned their combined gravitational attractions produce
spring tide
When the sun and moon are right angles relative to Earth they partially cancel out each others gravitational attractions to produce
neap tide
Backwash always flows
perpendicular to the slope of a shoreline
Longshore currents
Flow in a direction parallel to the shoreline
Which is NOT true of emergent coastlines
They have very wide continental shelves
What latitudes typically see an average annual heat gain
20N to 20S
How much infrared heat radiation is emitted by clouds annually?
9%
On an annual basis the amount of heat absorbed by the earth system__________ the amount of emitted by the earth system
Earth's heat engine does more than simply move heat from one part of the surface to another; it also moves heat from the Earth's surface and lower atmosphere back to space. This flow of incoming and outgoing energy is Earth's energy budget. For Earth's temperature to be stable over long periods of time, incoming energy and outgoing energy have to be equal. In other words, the energy budget at the top of the atmosphere must balance. This state of balance is called radiative equilibrium.
Coriolis deflection in the Northern Hemisphere is to the _____
right
winds of the northeasterly trades flow
from the northeast
westerlies occupy which latitudes
both A&B
Which of the following statements is true concerning the units of temperature measurements
F* are used for surface measurements
Which heat process involves transfer by mass movement or circulation
Convection [Show Less]