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8th Grade 2nd Quarter Benchmark Flashcards | StudBud
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8th Grade 2nd Quarter Benchmark
8th Grade 2nd Quarter Benchmark
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Earth Science and Conservation - 8th grade standards
Flashcards
31 cards
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Practice quiz
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Host live
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Questions
31
Answers
1
Which resource is nonrenewable?
water
wind
sunlight
oil
2
Under what conditions would the highest grade of metamorphic rock be formed?
high temperature/high pressure
low temperature/high pressure
low temperature/low pressure
high temperature/low pressure
3
Which is an example of a resource that has a limited supply?
soil
the sun
air
coal
4
Someone in a rural area of an undeveloped country would probably use what to heat their home?
an electric furnace
wood
solar power
natural gas
5
The movement of the tectonic plates is caused by
the gravity of the iron-nickel core.
the rotation of the Earth.
the Moho discontinuity.
convection currents in the Earth's mantle.
6
The Earth's surface is not a solid surface but is divided into
several oceanic plates.
continental and oceanic plates.
continental and crustal plates.
seven continental plates.
7
The upper mantle is part of which sphere?
biosphere
lithosphere
atmosphere
hydrosphere
8
A _____ zone is where two lithospheric plates converge, one riding over the other.
convergent
volcano
continental
subduction
9
Metamorphic rocks directly form from
sediments that are compacted and then cemented.
igneous rocks.
igneous, sedimentary, and metamorphic rock.
magma deep within the Earth.
10
Upon which tectonic plate does Indiana lie?
Pacific Plate
North American Plate
Nazca Plate
Eurasian plate
11
Earthquake epicenters are often found near _____.
sea floor spreading
plate boundaries
rift zones
hot spots
12
How does the temperature of the Earth's mantle compare to the other layers of the Earth?
The mantle is the same temperature as the crust.
The mantle is hotter than the crust.
The mantle is hotter than the core.
The mantle is the same temperature as the core.
13
Earth's layers contain different elements. Why did iron and nickel sink to the core?
They are more dense.
They are less dense.
They are lighter weight.
They are crystallized.
14
Which is an example of a nonrenewable resource?
gold
glass
paper
leather
15
What action could be taken to conserve the world's supply of copper?
reduce pollution connected with the mining of copper
create plan to recycle copper instead of sending to landfill
find cheaper, easier methods to mine copper
use another metal as a substitute for copper wiring
16
What causes different elements to settle into distinct layers of Earth's interior?
freezing/boiling points of substances
density of substances
gravity
molecular mass
17
Earthquakes are prevalent in California because
it lies directly over the Ring of Fire.
it lies on a plate that falls under a oceanic plate.
the Pacific and North American plates scrape horizontally.
the Pacific and North Amercian Plates converge.
18
Hawaii is located over a tectonic plate meaning Hawaii is likely to experience
hurricanes.
tornadoes.
erosion.
volcanic eruptions.
19
Based on your knowledge, what do you know about the density of the Earth's layers?
The density of layers increases as temperature decreases.
The density of layers decreases as the pressure increases.
The density increases in layers closer to Earth's surface.
The density increases in layers closer to the Earth's core.
20
All but one of these is a reason to support conservation.
undiscovered lands will provide plenty of natural resources
geographical mismatch between food demand and supply
global population growth
global capacity to provide sufficient food
21
If tectonic plates stopped moving, we would no longer have
the tides.
ocean waves.
earthquakes.
changes in seasons.
22
A rock that is likely to be found floating in water after a volcanic eruption is
phyllite.
marble.
granite.
pumice.
23
During the rock cycle, _______ follows erosion.
igneous rocks
burial
crystallization
deposition
24
How would you calculate the difference in arrival times between P and S waves?
S-wave arrival time plus P-wave arrival time
S-wave arrival time minus P-wave arrival time
P-wave arrival time plus S-wave arrival time
P-wave arrival time minus S-wave arrival time
25
The layer of Earth below the crust and above the outer core is
the outer core.
the inner core.
the topsoil.
the mantle.
26
Rocks that appear to have formed in materials deposited in water are
pyroclastic rock.
sedimentary rock.
metamorphic rock.
igneous rock.
27
To determine the epicenter, you must record ____ waves from ____ seismic recording stations.
P-waves; 2
S-waves; 3
S, P, and L waves; 3
S- and P-waves; 3
28
What is region called where heavier, more dense crust sinks beneath lighter crust?
divergent oceanic-continental plate boundary
convergent continental-continental plate boundary
subduction zone
divergent oceanic-oceanic plate boundary
29
What is the action force responsible for seafloor spreading?
the destruction of ocean crust in trenches
magma forced up toward the ocean ridge
the force of the ocean crust sitting on the asthenosphere
the difference in mass of the ocean and continental plates
30
Petroleum fuels are nonrenewable because they are formed from ___.
radioactive compounds
living organisms
water
wind
31
If you travel to the center of the earth the temperature would
stay about the same.
increase dramatically.
increase minimally.
decrease dramatically.
