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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
false
B
true
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
wind
B
physical
C
mechanical
D
chemical
6) An agent of chemical weathering is
A
abrasion
B
burrowing animals
C
oxidation
D
removal of pressure
7) ___ is produced when pollution mixes with rainwater.
A
soil
B
smoke
C
fog
D
acid rain
8) Which climate will see the most weathering?
A
wet and hot
B
dry and hot
C
wet and cold
D
dry and cold
9) Soil includes
A
air
B
water
C
decaying organic material
D
all
10) The largest soil particle size is
A
gravel
B
sand
C
clay
D
silt
11) Soil___ is a measure of how well plants grow in the soil.
A
texture
B
fertility
C
pH
D
goodness
12) If a soil is really acidic, things won't grow.
A
true
B
false
13) This soil horizon contains topsoil.
A
bedrock
B
A horizon
C
B horizon
D
C horizon
14) Which of the following methods is best?
A
rotating crops planted in a field each year
B
getting rid of all leftover plant pieces after harvest
C
planting the same crop each year in the same field
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
B
carbon dioxide
C
oxygen
D
nitrogen
16) Which method of conservation involves plowing dead weeds and stalks from the previous year's crop into the soil?
A
conservation plowing
B
contour plowing
C
stubble plowing
D
crop rotation
17) Most garden plants grow best in soil with a pH between
A
6 and 7.5
B
4 and 6.5
C
7 and 8.5
D
5 and 6.5
18) The organisms that break down the remains of dead organisms are called
A
legumes
B
decomposers
C
mitochondria
D
lysosomes
19) This horizon forms when bedrock starts to weather.
A
A horizon
B
bedrock
C
B horizon
D
C horizon
20) Plant roots can cause ___ weathering
A
mechanical and chemical
B
mechanical
C
no
D
chemical
*select an answer for all questions
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