Science Homework Help

It is not a solid

All of these answers are correct

It lacks a crystalline structure

it is made by organic processes

Differentiation

Solidification

Accretion

Lithification

True

False

Light; Felsic

Dark; Felsic

Light; Mafic

Dark; Mafic

True

False

all of the choices are correct.

beneath the earth’s surface, directly under the epicenter.

the primary point of rupture in the earth’s crust.

located using multiple seismographs.

During the spring

When the earth and moon are aligned

During the winter

When the earth, moon, and sun are aligned

increases in volcanic ash in the air.

worldwide cooling observed since the 1920s.

all of the choices are correct

increases in atmospheric carbon-dioxide levels.

all of the above

P-waves

S-waves

surface waves

Withdrawal of groundwater exceeds recharge

Saltwater intrusion in coastal areas

Compaction of aquifers during earthquakes

Excessive land subsidence

All of these answers are correct

A decrease in phytoplankton productivity

An increase in “extreme” weather patterns

Increased rates of evaporation

sinkholes

deltas

all of the above

caverns

Oxygen-18 is preferentially removed

Oxygen-16 is preferentially removed

Oxygen-16 and Oxygen-18 are removed in equal quantities

The type of rock forming on the sea-floor changes periodically

Magnetic minerals in rocks on the seafloor record the periodic flip of the poles

of reasons that are not understood; It’s a geologic mystery

The rock on the seafloor get older as you move away from a ridge

mafic

intermediate

felsic (silicic)

ultramafic

flooding caused by dam failure resulting from an earthquake.

flooding of coastal areas due to tectonic subsidence.

a quicksand-like condition arising in some wet soils during earthquakes.

flooding caused by tsunamis.

landslides.

tsunamis.

liquefaction.

release of radon gas.

It is surrounded on 3 sides by water

It is in a hurricane prone area

It is at or below sea-level

All of these answers are correct

It is built on loose sediment

TRUE

FALSE

Collisional Plate boundary

A continental hotspot

Subduction Zone

Transform Plate boundary

TRUE

FALSE

Melting of glaciers as global temperature increases

Subsidence of land due to pumping of ground water

Uplift of the land near the ocean as a result of plate tectonics

All of these answers are correct

volcanic dome.

shield volcano.

nuée ardente.

cinder cone.

lakes and rivers

the atmosphere

groundwater

glaciers

permits only high salinity water as feed for filtration

allows use of brackish groundwater

requires a lot of energy for distillation

cannot be done with solar energy

distance between the epicenter and the seismograph

amount of ground motion

magnitude

intensity

is independent of the permeability of the material

determines the discharge through an aquifer

does not at all resemble the expression for stream discharge

quantifies how much recharge there is to an aquifer

True

False

traps radiation from the sun and warms the atmosphere

all of the above

provides plants with the carbon required for growth

reflects incoming solar energy back into space

rate of tectonic creep

intensity

Richter magnitude

magnetic inclination

Wind; Storms

Density differences; Carbon content

Wind; density differences

Wind; Earth’s rotation

He had no evidence to support his theory

He was not a scientist and therefore not trusted by the scientific community

He never tried to present his theory to the scientific community

He could not supply a mechanism to explain his theory

increased flooding

increased soil erosion

increased surface runoff

All of these answers are correct

a cone of depression

a beginning of a sinkhole

found only in confined aquifers

the result of land subsidence

Volcanic; Larger

Plutonic; Larger

Plutonic; Smaller

Volcanic; smaller

FALSE

TRUE

decay of organic matter

combustion of fossil fuels

photosynthesis

respiration

depends on both the geologic material and the type of fluid

Reflects how readily fluid flows through a material

Is part of the distinction between aquifers and aquitards

Is greater in shale than in sandstone

All of these answers are correct

the application of heat and pressure to other rocks

solidification of a magma

the products of the breakup of other rocks

sediment deposition by floods

lateral erosion

meander migration

all of the above

base level

meander size

flood frequency

channel pattern

mantle

lithosphere

asthenosphere

core

climates are very complex

uncertainty in CO2 removed by geologic processes

the relationship between CO2 produced, and resultant atmospheric CO2 levels.

all of the choices are correct

True

False

a discredited theory that states that our universe maintains the same size over time

the theory that the entire universe has been expanding for 14 Billion Years

The theory that th e universe has been expanding for ~4.6 Billion years

a theory that says that the Earth’s formation was the result of a loud sound

FALSE

TRUE

Continental Shelf

Continental Slope

Continental Rise

Abyssal plain

divergent

subduction zone

transform

collisional

the mantle is liquid and can easily flow

there are temperature differences that result in variations in density in the mantle

the lithospheric plates cause the mantle to move

there are compositional differences that result in density differences in the mantle

locked and therefore accumulating stress.

a section of a fault that is undergoing creep

not very dangerous because it only slips a few meters at a time.

not of much concern because it is seismically quiet.

True

False

point bar

oxbow

cut bank

channel

subduction-zone volcano.

cinder cone.

volcanic dome.

shield volcano.

all of the choices are correct.

may contain up to about 75 percent SiO2 by weight.

are viscous and do not flow easily.

tend to inhibit passage of gas that tries to escape through it.

result in more explosive eruptions than low-silica magmas.

pyroclastic flow

composite flow.

rhyolite.