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Weathering And Soil, 6th Grade
Test Description: Rocks and Weathering
Instructions: Answer all questions to get your test result.
1) The processes that happen on Earth today are the same ones that happened long ago
A
uniformitarianis
B
grandfather clause
C
catastrophism
D
conservation
2) Weathering involves the removal of rock material while erosion is just when chemicals break down rock
A
true
B
false
3) Mechanical weathering can be done by
A
all of the options
B
abrasion
C
burrowing animals
D
plant roots
4) Mechanical weathering usually happens quickly
A
false
B
true
5) Which kind of weathering produces new minerals as it breaks down rock?
A
physical
B
chemical
C
mechanical
D
wind
6) An agent of chemical weathering is
A
burrowing animals
B
abrasion
C
removal of pressure
D
oxidation
7) ___ is produced when pollution mixes with rainwater.
A
acid rain
B
smoke
C
fog
D
soil
8) Which climate will see the most weathering?
A
dry and cold
B
wet and hot
C
wet and cold
D
dry and hot
9) Soil includes
A
air
B
all
C
decaying organic material
D
water
10) The largest soil particle size is
A
sand
B
gravel
C
clay
D
silt
11) Soil___ is a measure of how well plants grow in the soil.
A
texture
B
fertility
C
goodness
D
pH
12) If a soil is really acidic, things won't grow.
A
false
B
true
13) This soil horizon contains topsoil.
A
bedrock
B
A horizon
C
C horizon
D
B horizon
14) Which of the following methods is best?
A
planting the same crop each year in the same field
B
rotating crops planted in a field each year
C
plowing in straight lines over a hill
D
getting rid of all leftover plant pieces after harvest
15) Legumes take ___ from the air or soil and convert it into forms that plants can use.
A
carbon
B
nitrogen
C
oxygen
D
carbon dioxide
16) Which method of conservation involves plowing dead weeds and stalks from the previous year's crop into the soil?
A
crop rotation
B
stubble plowing
C
contour plowing
D
conservation plowing
17) Most garden plants grow best in soil with a pH between
A
5 and 6.5
B
4 and 6.5
C
7 and 8.5
D
6 and 7.5
18) The organisms that break down the remains of dead organisms are called
A
mitochondria
B
decomposers
C
lysosomes
D
legumes
19) This horizon forms when bedrock starts to weather.
A
A horizon
B
B horizon
C
C horizon
D
bedrock
20) Plant roots can cause ___ weathering
A
chemical
B
no
C
mechanical
D
mechanical and chemical
*select an answer for all questions
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