WorksheetsEarth Science Mid-Year Review
Total questions: 53
Worksheet time: 1hrs 16mins
The diagram represents a model of Earth’s surface and internal structure. Letters A, B, C, and D represent four different layers. Some depths below Earth’s surface are shown. Which Earth layer is inferred to be composed of solid nickel and iron?
A
B
C
D
Earth’s internal heat is the primary source of energy that
warms the lower troposphere
melts glacial ice at lower altitudes
moves the lithospheric plates
pollutes deep groundwater with radioactivty
In which layer of Earth’s interior is the inferred temperature 6,000º C?
crust
outer core
inner core
mantle
Which event is an example of chemical weathering?
rocks falling off the face of a steep cliff
feldspar in granite being crushed into clay-sized particles
water freezing in cracks in a roadside outcrop
acid rain reacting with limestone bedrock
Humus, which is formed by the decay of plant and animal matter, is important for the formation of most
soils
minerals
delicious dip for pita chips
surface bedrock
A landscape region that has broad, U-shaped valleys with polished and grooved bedrock was most likely formed by
running water
glaciers
wind
wave action
Which climactic conditions normally produce the greatest chemical weathering?
cool and dry
cool and wet
warm and dry
warm and wet
The largest sediment particles that can be transported by a stream traveling at a velocity of 200 centimeters per second are
silt
cobbles
pebbles
sand
The accompanying cross section illustrates the general sorting of sediment by a river as it flows from a mountain to a plain. Which factor most likely caused the sediment to be sorted in the pattern shown?
velocity of the river water
hardness of surface bedrock
mineral composition of the sediment
temperature of the water
A sedimentary particle is dropped into a cylinder of water. The particle will take the longest time to settle if the particle has
low density, small size, and spherical shape
low density, small size, and flattened shape
high density, large size, and spherical shape
high density, large size, and flattened shape
A sediment particle transported by a stream over a long period of time will most likely show
a decrease in mass and number of angular edges
a decrease in density and size
an increase in weight and hardness
an increase in volume and number of cleavage planes
Which diagram represents a side view of a sand dune most commonly formed because of the prevailing wind direction shown?
Which cross section best represents the valley shape where a rapidly flowing stream is cutting into the bedrock in a mountainous area?
When two meanders meet, and the river is redirected, the resulting formation is called
an oxbow lake
a drumlin
a delta
an outwash plain
What is the minimum water velocity necessary to maintain movement of 0.1-centimeter-diameter particles in a stream?
0.02 cm/s
5.0 cm/s
0.5 cm/s
20.0 cm/s
A stream flowing at a velocity of 75 centimeters per second can transport
clay, only
pebbles, only
pebbles, sand, silt, and clay, only
boulders, cobbles, pebbles, sand, silt, and clay
A decrease in a river’s velocity will most likely result in more
erosion by the river
deposition by the river
large particles being carried by the river
dissolved material being picked up by the river
divergent plate boundaries?
salt, gypsum, and hematite?
conglomerate rock is that the particles in a breccia
rock are
times during the past. This pattern of magnetic
reversal is best preserved in
carbon-14
Canyon
