8.1, 8.2, 8.3 test review

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Jorge rubs two rocks together. He
notices that some of the surface of one
of the rocks was worn away to form
small particles. What has happened to
that rock?
A.It was eroded.
B.It was dissolved.
C.It was exfoliated.
D.It was weathered.

AND THE ANSWER IS…
D.It was weathered.
What can cause granite to break down
into soil over time?
A.rain and wind
B.soil deposition
C.heat from magma
D.pressure underground

AND THE ANSWER IS…
A.rain and wind
Which is a cause of physical weathering,
but not of chemical weathering?
A.acids
B.air
C.water
D.wind

AND THE ANSWER IS…
D.wind

Hanna puts the two pebbles shown in a rock tumbler. The
tumbler spins so the rocks bump against each other. When
she takes the pebbles out, she discovers that pebble 1 had
more abrasion than pebble 2.
What can she conclude about the pebbles?
A.Pebble 2 is softer than pebble 1.
B.Pebble 2 is harder than pebble 1.
C.Pebble 2 is less reactive than pebble 1.
D.Pebble 2 is more reactive than pebble 1.
AND THE ANSWER IS…
B.Pebble 2 is harder than pebble 1.

How does chemical weathering differ from physical
weathering?
A.Human activity causes chemical weathering but does
not cause physical weathering.
B.Chemical weathering does not break rocks down into
smaller parts, but physical weathering does.
C.Chemical weathering is acid precipitation and
pressure, and physical weathering is wind and
temperature changes.
D.Chemical weathering happens when the bonds that
hold minerals together break; physical weathering
happens when physical actions wear away and crack
the rocks.
AND THE ANSWER IS…
D.Chemical weathering happens when the
bonds that hold minerals together break;
physical weathering happens when
physical actions wear away and crack
the rocks.

Leaves release acids into the soil as they
decay. How could the decaying leaves affect
the rocks in the soil underneath them?
A.They could increase the amount of physical
weathering.
B.They could decrease the amount of physical
weathering.
C.They could increase the amount of chemical
weathering.
D.They could decrease the amount of chemical
weathering.
AND THE ANSWER IS…
C.They could increase the amount of
chemical weathering.

The graph shows the average monthly rainfall in two Florida
cities. Weathering from rain will be the greatest when the
amount of rainfall is the highest.
When and where will rainfall cause the least weathering?
A.Gainesville in June
B.Miami in March
C.Miami in January
D.Gainesville in October
C.Miami in January

Marianna used a tray filled with dirt as a model of a stream. Marianna
poured water into the top of the tray and observed how much erosion
happened. Marianna then increased the slope of the tray and repeated
the experiment.
What would happen when the slope of the tray increased?
A.The speed of the water and the amount of erosion would increase.
B.The speed of the water and the amount of erosion would decrease.
C.The speed of the water would increase, while the amount of erosion
would decrease.
D.The speed of the water would decrease, while the amount of erosion
would increase.
AND THE ANSWER IS…
A.The speed of the water and the amount
of erosion would increase

As the river shown in the following illustration
meanders, sediment drops out on the inside of each
bend.
What is the correct term for the dropping out of the
sediment?
A.deposition
B.erosion
C.solidifying
D.weathering
AND THE ANSWER IS…
A.deposition
Which of the following is the best definition
of a floodplain?
A.an area of land covered by a broad but
shallow river
B.an area of land that has been flattened
because of flooding
C.an area of flat land near a river that floods
occasionally
D.an area of land that is always underwater
because of flooding

AND THE ANSWER IS…
C.an area of flat land near a river that
floods occasionally

How is a rockfall different from a rockslide?
A.In a rockfall, a mass of rocks slides together, whereas
in a rockslide, blocks of rock drop freely.
B.In a rockfall, individual blocks of rock drop freely,
whereas in a rockslide, a mass of rocks slides
together.
C.In a rockfall, a mountain slope collapses after heavy
rains, whereas in a rockslide, large masses of rock
fall after an earthquake.
D.In a rockfall, an earthquake triggers rocks to slide
together, whereas in a rockslide, a mountain slope
collapses after heavy rains.
AND THE ANSWER IS…
B.In a rockfall, individual blocks of rock
drop freely, whereas in a rockslide, a
mass of rocks slides together

While on a hike, Ms Grant and Ms Feduniec noticed some
trees like the ones shown in the following picture.
What caused the trees to be shaped the way they are?
A.creep
B.glacier
C.landslide
D.mudflow
AND THE ANSWER IS…
A.creep

Glaciers form in cold areas with lots of snow.
The snow must turn into ice to form a glacier.
How does this happen?
A.The cold wind blows across the top of the
snow, turning it into ice.
B.The snow builds up, and its weight
compresses the snow below into ice.
C.The snow melts as it falls and then freezes
once it hits the cold ground.
D.The temperature on the ground is cold enough
to turn the snow into ice.
AND THE ANSWER IS…
B.The snow builds up, and its weight
compresses the snow below into ice.
A river starts as a steep channel in the
mountains. It then leaves the mountains
and enters a flatter area of land. It
meanders across a plain and then enters
the ocean. At which point would the river
described form a delta?
A.when the river enters the ocean
B.when the river leaves the mountains
C.when the river meanders across a plain
D.when the river is in the mountains

AND THE ANSWER IS…
A.when the river enters the ocean
GOOD LUCK!!!
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