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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
conservation
D
catastrophism
2) Weathering involves the removal of rock material while erosion is just when chemicals break down rock
A
false
B
true
3) Mechanical weathering can be done by
A
plant roots
B
burrowing animals
C
abrasion
D
all of the options
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
mechanical
C
chemical
D
wind
6) An agent of chemical weathering is
A
abrasion
B
oxidation
C
removal of pressure
D
burrowing animals
7) ___ is produced when pollution mixes with rainwater.
A
smoke
B
soil
C
fog
D
acid rain
8) Which climate will see the most weathering?
A
wet and hot
B
wet and cold
C
dry and hot
D
dry and cold
9) Soil includes
A
air
B
decaying organic material
C
water
D
all
10) The largest soil particle size is
A
clay
B
sand
C
gravel
D
silt
11) Soil___ is a measure of how well plants grow in the soil.
A
fertility
B
pH
C
goodness
D
texture
12) If a soil is really acidic, things won't grow.
A
false
B
true
13) This soil horizon contains topsoil.
A
A horizon
B
bedrock
C
B horizon
D
C horizon
14) Which of the following methods is best?
A
rotating crops planted in a field each year
B
planting the same crop each year in the same field
C
getting rid of all leftover plant pieces after harvest
D
plowing in straight lines over a hill
15) Legumes take ___ from the air or soil and convert it into forms that plants can use.
A
carbon dioxide
B
nitrogen
C
carbon
D
oxygen
16) Which method of conservation involves plowing dead weeds and stalks from the previous year's crop into the soil?
A
contour plowing
B
conservation plowing
C
stubble plowing
D
crop rotation
17) Most garden plants grow best in soil with a pH between
A
5 and 6.5
B
4 and 6.5
C
6 and 7.5
D
7 and 8.5
18) The organisms that break down the remains of dead organisms are called
A
decomposers
B
legumes
C
mitochondria
D
lysosomes
19) This horizon forms when bedrock starts to weather.
A
B horizon
B
C horizon
C
bedrock
D
A horizon
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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