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Earth Science: 5 Weathering & Soil Flashcards | StudBud
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Earth Science: 5 Weathering & Soil
Earth Science: 5 Weathering & Soil
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Review of weathering & soil for 8th grade
Flashcards
50 cards
F
Practice quiz
P
Host live
L
Questions
50
Answers
1
Mechanical weathering affects what part of a rock?
surface area
volume
2
Which is a type of mechanical weathering?
infiltration
consistency
abrasion
3
Surface area of rectangular block: has alength of 9 cm, a width of 4 cm, anda height of 12 cm.
84 cm2
432 cm2
384 cm2
26 cm2
4
What would the infiltration rate be in an organic & clay rich soil?
large pores=fast
small pores=fast
small pores=slow
large pores=slow
5
Soil components that were once alive (choose the BEST answer)
inorganic matter
dead stuff
biota
organic matter
6
The amount of water in soil
moisture
infiltration
fertility
consistency
7
The hardness of soil
texture
fertility
pH
consistency
8
The A-horizon contains the most clay
False
True
9
Parent material in soil is next to which horizon?
C
D
B
A
10
Soils that form near the equator are thicker & more fertile than those near the poles
False
True
11
Processes that change a rock's composition
Erosion
Mechanical Weathering
Weathering
Chemical Weathering
12
The overall shape of the land in an area
landscape
topography
weather
climate
13
A soil's acidity levels
infiltration
moisture
fertility
pH
14
Which process occurs in chemical weathering?
dissolving
ice wedging
abrasion
15
Chemical weathering can be sped up by which things?
larger surface area
smaller surface area
none of these
colder temperatures
16
Soils form more quickly on a steep hillside than on flat ground
False
True
17
What type of climate decreases the rate that weathering occurs?
Hot, Wet
Hot, Dry
Cold, Wet
Cold, Dry
18
Which soil particle allows water to flow most easily through because of the large pores?
Coal
Silt
Sand
Clay
19
Which horizon accumulates the most clay?
D
A
B
C
20
What type of climate increases the rate that weathering occurs?
Hot, Wet
Cold, Dry
Cold, Wet
Hot, Dry
21
The general weather in a given area
topography
climate
weather
seasons
22
Soil layer with the most organic material
A
Parent Material
B
C
23
All the living things in an area
animals
dead things
organic matter
biota
24
Which of the following are not organic parts of soil?
animal waste
bacteria
insects
minerals
25
Oxygen combing with other elements or metals in rocks
weathering
decomposition
mechanical weathering
oxidation
26
What horizon is directly weathered from the parent material & forms the initial soil?
A
B
D
C
27
Parent material, climate, biota, topography,and time are related how?
Soil Types
Soil Weathering Factors
Soil Formation Factors
Soil Properties
28
Which horizon is least developed into soil?
D
A
C
B
29
All of the following are inorganic EXCEPT ______.
Air
Rocks
Leaves
Water
30
Color, texture, structure,consistency, infiltration, soil moisture, pH,fertility, temperature
Soil Formation Factors
Soil Horizons
Soil Properties
31
Mechanical weathering is any process that _____.
does not form a soil horizon
breaks rocks into smaller pieces
changes minerals into new ones
32
What color would a soil be that is rich in organic matter & contains a large volume of clay?
dark brown or black
dark purple or brown
light brown or black
light brown or yellow
33
Which is NOT a factor in the formation of soil?
climate
fertility
biota
34
Process that break rocks into smaller pieces
Erosion
Deposition
Weathering
Temperature
35
Which list of soil particles is from largest to smallest?
clay, sand, silt
silt, sand, clay
sand, clay, silt
sand, silt, clay
36
What would the texture be in a soil that is rich in organic matter and clay?
Dry
Wet
Muddy
Sticky
37
Which material is an organic part of soil?
leaves
water
clay
air
38
Which horizon contains the most organic matter?
D
C
B
A
39
Which horizon is the most developed soil?
D
C
A
B
40
Chemical weathering changes the _________.
size of a rock
the horizons of a rock
materials in a rock
41
Bonus: What is the common mineral that we put on our food?
Halite
Calcite
Magnetite
Quartz
42
process of changing once-living material into dark-colored organic matter
decomposition
mechanical weathering
chemical weathering
oxidation
43
This soil property determines the infiltration rate of soil
Consistency
Temperature
Texture
Organic Matter
44
Mixture of weathered rock, rock fragments, decayed organic matter, water & air
Rock
Mineral
Soil
45
a soil's ability to support plants
fertility
texture
consistency
moisture
46
The size of grains of soil
moisture
texture
pH
infiltration
47
What type of weathering do plants & animals cause?
Mechanical
Chemical
48
Surface area of rectangular block: has alength of 7 cm, a width of 3 cm, anda height of 10 cm.
210 cm2
20 cm2
242 cm2
51 cm2
49
Soils form most effectively in cold, dry climates
True
False
50
How fast water enters soil
moisture
infiltration
consistency
pH
