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Question Answer
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=1g/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 rocka, 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 abundanttopography
_ 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 quartziteschist
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 _ areaswarm, 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 gases21, 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