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6/13/2009

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density=   mass/volume  
the si units for density are:   mass or volume  
___ for irregular objects if found by water displacement.   volume  
___ (air, water, magma) rises because it is less dense.   warm  
___sinks.   cold  
as ___ increases, so does density.   pressure  
water is most dense as a ___.   liquid  
density=1   g/ml  
a ___ is a prediction about a problem that can be tested.   hypothesis  
a variable is a ___ factor in an experiment.   changeable  
___ are factors in an experiment.   constants  
any valid scientific theory has passed test designed to ___ it.   invalidate  
there can be more than _ explanation for any ___   phenomena  
the altitude of polaris equals your ___   latitude  
latitude lines go ___ but measure north and south of the equator.   east and west  
longitude lines go ___ but measure east and west of the prime meridian.   north and south  
the closer the contour lines, the ___ the slope.   steeper  
contour lines form v's that point ___ of rivers and creeks.   upstream  
the earth consists of a ___ inner core, a ___ outer core a ___ mantle, and a thin ___ crust.   solidliquidcrustrocky  
the lithosphere is the ___   crust  
___ crust is thinner, younger, and denser.   ocean  
oceanic crust is amde up of ___ rock.   basaltic  
___ ___ move tectonic plates.   convection currents  
___ ___ rises, cools, becomes denser and sinks.   hot materials  
convergent boundaries are colliding plates which cause folded or ___ ___ mountainhs, ___ zone (volcanoes, trenches), and ___ faults.   thrust faultedsubductionreverse  
divergent boundaries are dividing plates and cause ___, ___, ___, and volcanoes.   seafloor spreading, mid ocean ridges, rift valleys, volcanoes  
transform boundaries slide past each other and _ and earthquakes are produced.   strike slip faults  
_ can result with any plate movement.   earthquake  
_ are not related to plate movement.   hotspots  
a fault is a _ or _ in the earths crust where movement has occured.   breakcrack  
appalachian mountains are _ mountains.   folded  
_ activity is associated with subduction, rifting, or sea floor spreading.   volcanic  
an ocean plate will always _ a continental plate because it is _.   sink underdenser  
_ seismic stations are needed to find the epicenter of an earthquake.   3  
_ waves travel the fastest and reach the seismic station first.   p  
p waves travel through _ and _.   solids, liquids  
p waves slow down and _ when they hit the liquid outer core.   bend  
_ waves do not travel through liquids.   s  
_ is the process that rocks are broken down. (by water, air, and organisms.   deposition  
chemical weathering occurs in _, _ climates.   warmhumid  
_ weathering occurs in cold climates. (ice wedging)   mechanical  
erosion is the process by which earths materials are transported by _, _, or _.   moving water, gravity, or ice.  
_ causes all these to happen.   wind  
streams and moving water are the major _ of erosion.   agents  
_ is the dropping or settling out of sediment.   deposition  
high_=high relief areas. high _=low relief areas.   erosion, deposition  
large particles settle out _.   first  
sediment size from largest to smallest:_, _, _, and _.   gravel, sand silt, clay  
as particle size increases, _(the ability to transport water) increases.   permeability  
soil evolution starts with the weathering of _.   bedrock  
organic material must be present in order to have _.   soil  
_ consists of 3 horizons.   soil profile  
_-topsoil _-less humus, leaching from a, and _-weathered rock   a, b , c  
_ topography has caves and sinkholes produced by acidic groundwater dissolving limestone.   karst  
the_province is famous for karst topography.   valley and ridge  
ground water layers from the surface down include zone of _, _ table, zone of _ freely.   aeration, water, saturation  
an _ is a layer of rock that transports groundwater freely.   aquifer  
a spring is an area where the _ reaches the lands surface.   water table  
hydrologic or _ cycle includes the processes of evaporatioin, condensation, precipitation and runoff.   water  
the _ plain is the flattest area underlain by all types of sediments produced by the erosion of the _ mountains.   appalachian  
_ are abundant here.   fossils  
the _ is underlain by igneous and metamorphic rocks produced by ancient volcanoes.   piedmont  
seperated by a _ from the coastal plain.   fall line  
_- oldest in the state.   blue ridge  
_- long parallel ridges composed of folded and faulted rocks that occurred during the _ of africa and north america during the paleozoic.   valley and ridge, collision  
karst _ and fossils are abundant   topography  
_ underlain by sedimentary rocks.   appalachian  
_ resources are found here.   coal  
a _ is found in nature, is inorganic, solid, with a definite chemical composition and structure.   mineral  
mineral properties depend on there _ structure.   atomic  
_ are useful and profitable.   ores  
igneous rocka re classified by _ and _.   texture, composition  
_ rocks are produced by the cooling of magma or lava.   igneous  
fast cooling- _-texture includes small grains, glassy, air holes present.   extrusive  
_=intrusive- texture includes coarse or large mineral grains.   slow cooling  
metamorphic formed by _ and _.   heat, pressure  
metamorphic include _ (banded) and _   foliated, nonfoliated  
foliated rocks are _, _, and _.   gneiss, slate, schist  
non-foliated include _, and _.   marble, quartzite  
_ morphs into marble.   limestone  
_ morphs into quartzite   schist  
sedimentary rocks form from _, _, or _.   organic material, rock fragments, chemical precipitation  
sedimentary rock are found in flat layers or _.   strata  
_ are found in these layers.   fossils  
sedimentary subclasses include _, _, and _.   organic, clastic, chemical  
_ is formed both chemically and organically.   limestone  
_ rocks are made of fragments: conglomerate, sandstone, and shale.   clastic  
virginia _ include limestone, coal, and gravel.   resources  
_ resources can be replaced by nature at a rate close to the rate at which tehy are used, including vegetation, water and soil.   renewable  
nonrenewable are renewed very slowly or _.   not at all  
the earths water supply is renewable but also _   finite  
a _ is the remains, impression, or other evidence of a former existence of life preserved in _.   fossil, rock  
virginias fossils are mostly _ and are from all _ in history.   marines, eras  
_ states that the oldest rocks are found on the bottom of strata and the youngest on top of strata.   law of superposition  
law of cross-cutting relationships states that an igneous _ is younger than the layers it cuts across.   intrusion  
fossils, superposition, and crosscutting are used to determine _.   relative ages  
relative ages are placing events in sequence without assigning _ numerical ages.   exact  
_ places a numerical age to an event.   absolute age  
radioactive decay, or _, if used to determine the absolute age of rocks.   half life  
uranium dating is used to find the agess of the _ rocks.   oldest  
_ is used to find the ages of human artifacts.   carbon-14  
the earth is about _ years old.   4.6 billion  
we have _ hgih tides, and _ low tides each day.   2, 2  
tides are caused by the gravitational pull of the _ and the _.   earth, moon  
currents move from _ to _ areas   warm, cold  
_ brings cold, nutrient rich water from the bottom of the ocean to the surface.   upwelling  
this is rich in _ activity.   biological  
estuaries are areas were _ mixes with _.   freshwater, saltwater  
_ rises when ice caps melt.   sea level  
cyanobacteria were responsible for the first oxygen on _.   earth  
presently blue green algae is an important source of _.   oxygen  
the ocean is the largest reservoir of _ at the earths surface.   heat  
it drives the _ of the earth.   weather  
the early atmosphere was mostly _ and very little _.   co2, o2  
the earths atmosphere is _% oxygen,_% nitrogen, and _%trace gases   21, 78, 1  
human activities such as burning _ have increased co2 levels.   fossil fuels  
high co2 levels produce the _ effect.   greenhouse  
_ are decreasing the ozone levels of the upper atmosphere.   cfc's  
areas near the equator recieve the most direct _.   radiation  
clouds form when air is at or below it's _ and condensation nuclei are present.   dew point  
_ causes deflections of the atmosphere and oceans due to rotation of earth.   coriolis effect  
a psychrometer measures _ in the air.   humidity  
a barometer measures _.   air pressure  
_ are cool and dry:   highs  
_ are warm and wet.   lows  
_ is due to unequal cooling that causes air pressure differences.   wind  
wind _ from high to low.   blows  
_ move quickly and produce rain at the front.   cold front  
_ move slowly and produce miles and miles of clouds.   warm front  
the highest pressure is found at _.   sea level  
high pressure moves _ and outward.   clockwise  
low pressure moves _ and inward.   counter clockwise  
u.s weather is dominated by prevailing _.   westeries  
weather moves _ to _.   west, east  
_ is june 21 (longest day).   summer solstice  
_ is december 21 (shortest day).   winter solstice  
solstice is when the sun is at its most _ or _ point.   northern, southern  
_ are when the sun is directly over the equator.   equinox  
the earth is closer to the sun in the _.   winter  
the earth rotates w to e once in _.   24 hours  
the earth revolves around the sun once in _.   365,25 days  
the earth is the _ planet from the sun.   3rd  
the moon has _ because of reflected sunlight and the _ at which we view it.   phases, angle  
_ pedulum and _ effect prove the earth rotates.   faucualts, corriolis  
_ and seasonal _ prove the earths revolution.   parallex, constellations  
two types of planets- _(rocky) and _ (gaseous).   inner, outer  
_ are known as dirty snowballs in space and originate in the _ cloud.   oort  
comets tail is the result of the _ and points _ from the sun.   solar winds, away  
comets _ is the result of the suns radiation.   coma  
asteroids are rocky or metallic iron objects with origins between _ and _.   mars, jupiter  
au= distance of _ and _.   earth, sun  
we measure _ distances in au.   planet  
light year is the distance _ travels in a _.   light, year  
we measure _ and _ distances with light years.   star, galaxy  
_ was the first manned landing on the _.   apollo II, moon  
_ was the first man on the moon.   neil armstrong  
the big bang explains the origins of the _.   universe  
the solar nebulae theory explains that the _ formed from the condensing of our sun or solar nebulae.   planets  
ours suns life cycle is _, protostar, _ red giant, white dwarf and black dwarf.   nebula, yellow main sequence star  
black holes are a _ of stars.   death stage  
we are located in the _, which is a _ galaxy.   milky way galaxy, spiral  
the 3 types of galaxies are _, _, and _.   spiral, elliptical, irregular  
_ has improved our knowledge and understanding of the universe.   the hubble space telescope  
red shifts indicate the universe is _ outward.   expanding  
this is used to support the _.   big bang theory  
coal evolution from softest to hardest- _, lignite, bituminous, anthracite.   peat  
_ are missing rock layers usually a result of erosion.   unconformities  


   


 

 

 

 

 

 
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