-
1. Each planet of the solar system is believed to have formed from an accumulation of dust and gas drawn together by .
gravity
-
2. The planet having the largest diameter relative to earth is .
Jupiter
-
3. The process by which simple plantlike organisms introduced free oxygen into the earth’s atmosphere is called .
photosynthesis
-
4. The dinosaurs appeared about _____ million years ago.
200
-
5. The means of discovering basic scientific principles is called the .
scientific method
-
6. Food, unlike minerals or land, is considered to be a _______resource.
renewable
-
7. On a global scale, the human population increases when its birthrate exceeds its ________ rate.
death
-
8. ______________Population growth is when the number of individuals added per unit of time increases over time.
exponential
-
9.________ time is the length of time required for a population to double in size.
doubling
-
1. An __________is the smallest particle into which an
element can be subdivided while still retaining the chemical characteristics of that element.
atom
-
2. The atomic number is the number of in an atomic nucleus.
protons
-
3. The atomic _________ number is the sum of the number of protons and the number of neutrons in an atomic nucleus.
mass
-
4. An ______ is an atom that has lost or gained electrons.
ion
-
5. ________bonding occurs when the atoms of a compound share electrons.
Covalent
-
6. A ___________is a chemical combination of two or more elements, in specific proportions, having a distinctive set of physical properties.
compound
-
7. The atoms of materials are arranged in regular,
repeating patterns.
crystalline
-
8. _________is the ability of a mineral to resist
scratching
hardness
-
9. The silica _________, consisting of four oxygen anions surrounding a single silicon cation, is the basic
building block of silicate minerals.
tetrahedron
-
10. ________are silicates in which atoms are tightly bonded into two-dimensional sheets.
Micas
-
11. __________is the simplest silicate containing only
silicon and oxygen.
Quartz
-
12. ________are unusual among silicates in that their structures can absorb or lose water.
Clays
-
13. _________is a naturally occurring silicate melt,
which may also contain suspended mineral crystals and dissolved water and gases.
Magma
-
14. ________sedimentary rocks are those formed from
fragments of preexisting rocks.
Clastic
-
15. ________ metamorphism occurs adjacent to a
cooling magma body, while _________ metamorphism occurs on a large scale involving heat and pressure generated by mountain-building or plate-tectonic movement.
contact, regional
-
1. _______is the study of large-scale movement and deformation of the earth's crust.
tectonics
-
2. The solid and rigid outermost layer of the earth is called the _________.
lithosphere
-
3. ___________ stress tends to squeeze an object; _________stress tends to pull an object apart.
compressive, tensile
-
4. __________ is the deformation produced in a body of matter in response to stress applied to it.
strain
-
5. If a material is subjected to ________ deformation, the material will return to its original size and shape when the stress is removed.
elastic
-
6. A material may rupture before there is any
plastic _______ deformation.
brittle
-
7. _________ temperature is the temperature above
which a magnetic material loses its magnetism.
curie
-
8. The ocean floor is made up largely of
the volcanic rock known as ________.
basalt
-
9. At a _________ plate boundary, lithospheric plates move apart; at a _________ plate boundary, lithospheric plates move toward each other.
divergent, convergent
-
10. Laurasia and ___________ are names given to the northern and southern portions of Pangaea, respectively.
Gondwanaland
-
11. Most of North America is part of the North American Plate; however, the part of California to the west side of the San Andreas fault is part of the _______ Plate.
Pacific
-
12. Excess sea floor is consumed in _____________ zones.
subduction
-
13. ___________ cells in the asthenosphere may be a
driving force behind plate tectonics.
convection
-
14. The concept that rocks are constantly subject
to change and that any type of rock can be transformed into another type of rock is called the ____________.
rock cycle
-
1. The phenomenon in which rocks snap back
elastically to their prestress condition after an earthquake is called ____________________.
elastic rebound
-
2. The point on the earth’s surface directly above the focus of an earthquake is called the ___________ .
epicenter
-
3. When an earthquake occurs, it releases
energy in the form of _____________ , which are divided into body waves and surface waves.
seismic waves
-
4._______________ are body waves that involve a side-to-side motion of molecules of the materials through which they travel.
s waves
-
5. The instrument that is used to detect the ground motions generated by earthquakes is called a __________.
seismograph
-
6. __________ is a measure of the damaging effects of an earthquake on surface features and on humans.
intensity
-
7. Earthquakes that follow the main shock
are called __________.
aftershock
-
8. An earthquake of Richter magnitude 6
causes ________________ times as much ground movement as one of Richter magnitude 4.
100
-
9. ____________ are events that precede an earthquake and can be used to predict its occurrence.
precursor phenomena
-
10. A method of releasing built-up strain along locked sections of faults by pumping fluid into fault zones is called ______________.
fluid injection
-
1.____________ is the volcanic, fine-grained
compositional equivalent of granite.
rhyolite
-
2. The collection of volcanoes rimming the
Pacific Ocean is known as the ____________.
ring of fire
-
3. A ___________ has formed in the crater of Mount St.
Helens.
volcanic dome
-
4. Bits of violently erupted volcanic material are collectively called _________.
pyroclastics
-
5. Stratovolcanoes are also called _________ volcanoes.
composite
-
6. A mudflow of meltwater and volcanic ash produced by a volcanic eruption is called a ___________.
lahar
-
7. The town of St. Pierre, on the Caribbean island of Martinique, was destroyed by a ___________ that occurred during the eruption of Mont Pelée in 1902.
pyroclastic flow (or nuees ardentes)
-
8. During the A.D. 79 eruption of Mount Vesuvius, many people were killed by the release of ____________.
toxic or volcanic gases
-
9. A _______ volcano considered to be is very unlikely to erupt again.
extinct
-
10. A ____________ is an enlarged volcanic summit crater formed by either an explosion or the collapse of a volcano.
caldera
-
1. __________ is the most important agent sculpting the earth’s surface.
water
-
2. The __________ includes all the water at and near the earth’s surface.
hydrosphere
-
3. The ________ includes all the processes by which
water in the hydrosphere circulates.
hydrologic cycle
-
4. A ___________ is any body of flowing water confined within a channel.
stream
-
5. Stream ___________ is the amount of water flowing past a given point in a specified length of time.
discharge
-
6. A hundred-year flood is a flood with ______________________ of one hundred years.
recurrence interval
-
7. Stream _________ is a measure of the total load of
material a stream can carry.
capacity
-
8. A __________ is a fan-shaped deposit of sediment
formed at a stream’s mouth.
delta
-
9. An __________ is a fan-shaped deposit of sediment
formed where a stream flows from a mountain into a dry plain or desert, or flows into a more slowly flowing, larger stream.
alluvial fan
-
10. A ___________ is the area surrounding a stream channel into which the stream spills over during floods.
flood plain
-
11. The __________ of a stream is the elevation of the
stream’s water surface at any point along the stream's course.
stage
-
12. A ___________ is constructed by plotting stream stage or discharge as a function of time.
hydrograph
-
13. A ____________ is constructed by plotting stream stage or discharge as a function of recurrence
interval or annual probability of occurrence.
flood-frequency
-
14. ___________ are raised banks along a stream channel that help to contain high discharge to prevent flooding.
levees
-
15. The __________ River is the highest-discharge stream in the United States
mississippi
-
1. A ____________ continental margin can be described as a margin if it is far removed from an
active plate boundary
passive
-
2. A ________ is a gently sloping shoreline area
washed over by waves and covered by sediment.
beach
-
3. The depth at which water motion within a wave is negligible is the _________.
wave base
-
4. _________ or abrasion, is the erosion caused by the grinding action of sand-laden waves on a coast.
milling
-
5._____________ are steplike terraces cut into bedrock along a coast by wave action as a consequence of rising land or falling water level.
wave-cut platform
-
6. A __________ is a coastline stream valley that is
partially flooded by the sea as a consequence of rising sea level or coastline subsidence.
drowned valley
-
7. A _________ refers to the net movement of water
parallel to a coastline.
longshore current
-
8. ___________ refers to the movement of sand along the length of a beach in the same general direction as the longshore current.
littoral drift
-
9. ___________ is the deflection of waves as they
approach the shore.
wave refraction
-
10. __________ are long, narrow islands paralleling a
coastline.
barrier islands
-
11. An ____________ is a body of water along a coastline that contains a mix of fresh and salt water.
estuary
-
12. A storm ________ is a local increase in the water level of an ocean or large lake that occurs in response to low air pressure associated with a major storm, such as a hurricane.
surge
-
1.____________ is a general term for rapid mass
movements.
landslide
-
2. _____________is the maximum slope angle at which a given dry, unconsolidated material is stable.
angle of repose
-
3. __________is the expansion of wet soil as it
freezes and the ice expands.
frost heaving
-
4. __________is a fine-grained sediment of pulverized
rock produced by glacial erosion.
rock flour
-
5. __________ is an extremely slow mass-wasting event.
creep
-
6. A __________ is a free-falling action in which the
moving material is not always in contact with the ground underneath.
fall
-
7. __________ is the accumulated debris that results
from rockfalls or rockslides.
talus
-
8. A __________ is a mass-wasting event in which a
relatively cohesive unit of rock or soil moves downslope along a well-defined surface or plane.
slide
-
9. A soil _________ is a slide that typically exhibits a
rotational movement of the soil mass as it moves downslope.
slump
-
10. A ________ is a mass-wasting event in which
materials move in a chaotic, incoherent fashion.
flow
-
11. The most rapid mass movements are normally rockfalls, avalanches, and ________.
mudflows
-
12. Landslides are often triggered by heavy
rain or _____________.
earthquakes
-
1. A _______ is a mass of ice formed from compacted,
recrystallized snow that moves over land under its own weight.
glacier
-
2.__________ is glacial erosion that occurs as ice
freezes onto rock and tears away rock fragments as the ice moves on.
plucking
-
3. ________ is sediment deposited by melting glacial
ice.
till
-
4. A _______ is a landform made of till.
moraine
-
5. Wind _________ is a type of natural sandblasting in
which wind-transported sediments strike an object and wear it away.
abrasion
-
6. __________ is the wholesale removal of loose
sediment by wind erosion.
deflation
-
7. A _______ is a low mound or ridge of fine-grained
material (usually sand) deposited by the wind.
dune
-
8. ________is a deposit of windblown silt.
loess
-
9. A ___________ is an area of low rainfall on the
leeward side of a mountain range that is caused by loss of moisture from air passing over the mountains.
rain shadow
-
10. ____________ is the conversion of habitable arid
lands to uninhabitable desert as a result of land-use practices such as farming and grazing of livestock.
desertification
-
1. ___________ is a mixture of disintegrated rocks and organic matter that will support the growth of plants.
soil
-
2. __________is the physical breakup of rock without
changes occurring in the rock's chemical composition
mechanical weathering
-
3. ___________is the disintegration of rock due to
reactions with chemicals in the environment.
chemical weathering
-
4. ___________is the process of removal of soluble
minerals from the soil by dissolution.
leaching
-
5. The ____________ of a typical soil profile consists
mainly of broken-up rock.
C horizon
-
6. The __________ of a typical soil profile is also called the zone of accumulation or the zone of deposition.
B horizon
-
7. Soil ________ relates to the sizes of fragments in the soil, whereas soil ________relates to the soil’s tendency to form lumps of soil particles.
texture, structure
-
8. _________ soil contains an abundance of aluminum
and iron hydroxides and oxides, is typically acidic, and is characteristically developed in humid climates.
pedalfer
-
9. _________ soil develops in acid climates and is
characterized by the presence of calcium carbonate.
pedocal
-
10. ________ soil is severely leached, nutrient-poor
soil of tropical climates
lateritic
-
1. An _______ is a rock in which a valuable or useful
metal occurs at a concentration high enough to make it economically practical to mine.
ore
-
2. Diamonds are mined from a type of igneous rock called __________ that occurs as pipelike intrusive
bodies.
kimberlite
-
3. _________ ore deposits are formed by warm fluids
circulating in the earth's crust.
hydrothermal
-
4. __________ is a name given to hydrothermal vents
that emit dark clouds of suspended sulfide minerals.
black smokers
-
5. A ____________ is a sedimentary rock, consisting of alternating iron-rich and silica rich (or carbonate-rich) layers, that may qualify as an ore of iron.
banded iron formation
-
6. __________ are ore deposits mechanically concentrated by the sorting action of moving water.
placers
-
7. _________ is the most commonly mined source of aluminum.
bauxite
-
8. _________ is investigation by methods such as
aerial photography and satellite imagery.
remote sensing
-
9. _________ are piles of waste rock produced by
surface mining.
spoil banks
-
10. __________ are piles of crushed or ground waste rock produced as a by-product of mineral processing.
tailing
-
1. ____________ are hydrocarbon energy sources formed from the remains of once-living organisms.
fossil fuels
-
2. _________,or petroleum, is not a single chemical compound, but a liquid mixture of various hydrocarbons.
oil
-
3. _________ is the most common gaseous hydrocarbon in natural gas.
methane
-
4. __________ energy resources are those not being
replenished or formed on a human time scale.
nonrenewable
-
5. The term __________ describes processes that occur in the absence of oxygen.
anaerobic
-
6. _________ is a soft, brown coal formed directly
from peat.
lignite
-
7. __________ is the process by which coal is
converted into a gaseous hydrocarbon fuel.
gasification
-
8. ___________ is the process by which coal is
converted into a liquid hydrocarbon fuel.
liquefaction
-
9. ___________ is a sedimentary rock containing the
waxy hydrocarbon fuel called kerogen.
oil shale
-
10. _________ are sedimentary rocks containing a
viscous, tar-like petroleum.
tar sands
-
1. ________ is the splitting apart of atomic nuclei
into smaller nuclei.
fission
-
2. __________ is the joining of atomic nuclei to form
larger ones and the releasing of energy in the process.
fusion
-
3. A _________ is a series of fission reactions
occurring in a mass of fissionable material such as uranium-235.
chain reaction
-
4. A _________ is a reactor that produces more
fissionable nuclear fuel than it consumes.
breeder reactor
-
5. A _________ is a nuclear reactor accident caused by the loss of core coolant and the resultant overheating of the core.
core meltdown
-
6. _________ , or solar cells, produce electricity directly from sunlight.
photovoltaic cells
-
7. _________ energy is derived from the internal heat
of the earth.
geothermal
-
8. _________ is a potential geothermal energy source
where thermal gradients are at least 40oC/kilometer and where groundwater is lacking.
hot dry rock
-
9. __________ fuels are those derived from living or
recent organisms.
biomass
-
10. ___________ is a fuel consisting of a blend of 90% gasoline and 10% alcohol.
gasohol
-
1. A _________ is a disposal site for solid or contained liquid waste in which the wastes are covered by a layer of earth at least once a day.
sanitary landfill
-
2. ________ is water containing dissolved chemicals
that has escaped from a waste-disposal site.
leachate
-
3. _________ are sediments dredged from waterways and reservoirs, usually to improve navigation or enlarge capacity.
dredge spoils
-
4. _________ is the sorting of waste material by type
before collection.
source separation
-
5. A _________ is a sanitary landfill designed for
toxic waste disposal.
secure landfill
-
6. An _________ field is a network of porous pipes
and surrounding soil designed to process the effluent from a septic system.
absorption
-
7. __________ treatment of municipal sewage consists
of removing solids and floating grease and scum;
_________ treatment of the remaining liquid is
mainly biological.
primary, secondary
-
8. The _________ of a radioisotope is the period of time required for one-half of an original sample of the material to decay.
half-life
-
9. _________ radioactive wastes are sufficiently low
in radioactivity that they do not require special disposal precautions, whereas ________ radioactive wastes are sufficiently radioactive to require extraordinary disposal precautions.
low-level, high-level
-
10. A procedure that isolates solid, high-level radioactive wastes by surrounding the waste with
several different types of materials to create multiple obstructions to waste leakage or invasion by ground water is called the __________ __________ concept.
multiple barrier
-
10. The average worldwide population growth
rate is about _______ percent per year.
1.4
|
|