Science worksheets for class 10
Access printable science worksheets for class 10
The breakdown of rock is called __________.
weathering
erosion
deposition
infiltration
Root action is an example of __________.
physical weathering
chemical weathering
porosity
permeability
Why is frost action an effective form of weathering?
Water dissolves many minerals.
Water cools the surroundings.
Water expands when it freezes.
The reaction between limestone and acid rain is an example of __________.
physical weathering
chemical weathering
erosion
deposition
Chemical weathering occurs most rapidly when conditions are __________.
cold and dry
cold and wet
warm and dry
warm and wet
Water is a major agent of chemical weathering because water __________.
has a high specific heat
cools the surroundings
dissolves many minerals
Which of the following rock layers is most resistant to weathering?
1
2
3
4
If a rock is broken into several pieces, its rate of weathering will __________.
increase
decrease
remain the same
Humus, which is formed by the decay of organic matter, is important in the formation of __________.
soils
minerals
sediment
surface bedrock
Which factors most directly control the development of soils?
prevailing winds and storm tracks
earthquake intensity and volcanic activity
bedrock composition and climate conditions
Soil horizons develop as a result of __________.
faulting and folding
compaction and cementation
weathering and biologic activity
The transportation of sediment is called __________.
weathering
erosion
deposition
abrasion
Which of the following rock layers shows the greatest evidence of erosion?
A
B
C
D
Unsorted, angular cobbles and boulders at the base of a cliff were most likely transported by __________.
running water
wind
gravity
ocean waves
The downward sliding of earth material is called __________.
tidal changes
glacial erosion
mass movement
lava flow
Which agent of erosion produces V-shaped valleys?
wind
gravity
glaciers
running water
Which agent of erosion produces U-shaped valleys?
wind
gravity
glaciers
running water
Which agent of erosion causes rocks to have surface pits and a frosted appearance?
wind
gravity
glaciers
running water
Which agent of erosion causes pebbles to become smooth and rounded due to abrasion?
wind
gravity
glaciers
running water
Where is the greatest velocity of a stream moving along a straight path?
A
B
C
D
Where is the greatest velocity of a stream moving along a curve?
B
C
E
X
Which change would most likely increase the velocity of a river?
a decrease in the river's volume
a decrease in water temperature
an increase in the river's gradient
Which change would most likely increase the velocity of a river?
an increase in the river's discharge
a decrease in water temperature
an decrease in the river's slope
What are the largest particles that a stream can transport at a velocity of 200 cm/s?
silt
sand
pebbles
cobbles
What is the minimum stream velocity needed to transport a pebble that is 1 cm in diameter?
23 cm/s
50 cm/s
75 cm/s
100 cm/s
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