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Earth Science Ch.9, 13, 15, 18 study guide
This is the study guide for the summative
Terms in this set (59)
Which of these would you expect to see during a nonexplosive eruption?
Clouds of ash darkening the sky
Molten rock deep underground, often gathers in?
Lava that is very runny probably
Has low silica content
If the water content of magma is high
an explosive eruption is more likely
When you talk about the viscosity of lava, you are talking about
how the lava flows
Which type of lava flows most like dripping wax?
Cool, stiff lava that forms jumbled heaps of sharp chunks near the vent
Which type of pyroclastic material gets its name from a word that means "little stones"?
The pyroclastic material that can reach the upper atmosphere and circle the Earth for years
Pyroclastic material forms when
when magma explodes into the air and hardens
The depression created when the roof of a magma chamber collapses
Rock begins to melt when
temperature increases and pressure decreases
Most volcanoes form
where tectonic plates collide
When an oceanic plate collides with a continental plate, the ocean plate is usually sub ducted because
the oceanic crust is denser and thinner than the continental crust
The volcanoes of Hawaii and other places far from tectonic plate boundaries are known as
Which category of the volcano is most likely to erupt in the near future?
An active volcano
A tiltmeter is an instrument that measures
changes in a volcano's slope
it is formed by the eruption of highly fluid lava, which travels further and forms thinner flows than the more viscous lava erupted from a stratovolcano.
created by a combination of explosive and nonexplosive eruptions
Cinder Cone volcano
a small volcano; usually erupts only for a short time
a funnel-shaped pit
A plateau produced by volcanic activity.
The ocean's surface temperature varies with latitude and
the time of the year
Which of the following could become a volcanic island?
The two major regions of the ocean floor are the continental margin and
the deep-ocean basin
An ocean trench
Runs parallel to a chain of volcanic islands
Which zone of the benthic environment is located between low- and high-tide limits?
Which of the following lives mainly in the oceanic zone?
The two major zones in the pelagic environment are the neritic zone and
the oceanic zone
One kind of renewable resource from the ocean is
Desalination is the process of removing what from ocean water?
Which of the following is NOT a source of point-source pollution?
The oil that drained into waterways and pollutes the ocean is an example
area between the shoreline and the continental slope
the slope between the outer edge of the continental shelf and the deep ocean floor.
the region near the bottom of a pond, lake, or ocean
base of the continental slope.
It is a trench in the ocean and is formed by subduction
broad, flat portion of the deep-ocean
Why is air pressure greatest at the Earth's surface?
Because of the pressure of oxygen
Air temperature changes as altitude increases because of
The protective ocean layer is found in
Radiation is the transfer of energy as
Thermal conduction is the transfer of energy as
heat through a material
Convection is the transfer of energy by the
circulation of gases or liquids
Wind occurs because
of differences in air pressure
The winds that blow from 30 latitudes in both hemispheres toward the equator are called
the trade winds
The winds that blow from 30 to 60 latitude in both hemispheres are called
The winds that blow from the poles to 60 latitudes in both hemispheres are called
What causes local winds?
Which is an example of a primary pollutant?
a layer of the atmosphere where gases do not mix
he highest layer of the atmosphere temperatures can reach 1,000C
the middle layer of the atmosphere, the coldest layer
a layer of the atmosphere closest to the Earth's surface.
Which of the following telescopes is the largest?
Very Large Array
An instrument that uses a set of lenses to focus light
A refracting telescope
The angle between an object in the sky and the horizon
The line where the sky and the Earth appear to meet
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