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10 questions
Samantha is given small samples of coarse sand, clay, gravel, and silt and is asked to analyze the particle size of each type of soil. Which option correctly organizes the sizes of the particles in decreasing order?
coarse sand, gravel, clay, silt
gravel, coarse sand, clay, silt
clay, silt, coarse sand, gravel
gravel, coarse sand, silt, clay
Peter wants to grow some bell peppers in his garden. Peter tests the pH of the soil and finds that the plants will thrive in the soil.
What was the most likely pH reading of the soil?
1
3
6
14
Which question can be answered through scientific investigation?
Can daisy plants be grown using both seeds and stem cuttings?
Do daisy plants have stunted growth in spring and summer?
Which varieties of daisy plants are good to be grown indoors in less sunlight?
How does the amount of fertilizer in the soil affect the growth of daisy plants?
Gardeners will sometimes add lime to soils that are too acidic. Lime acts as a fertilizer and raises the pH of the soil to an appropriate level.
What soil pH most likely requires the application of lime?
4
7
9
11
The table gives details of soil samples collected from different regions.
Which soil sample would have the mostgritty texture?
loam
sandy clay loam
silt loam
clay
Soils form in layers, or horizons, that collectively make up the soil profile.
Which horizon would contain the greatest humus content?
w
x
y
z
The image shows a soil horizon with its layers labeled.
Which layer is nutrient rich and contains a mixture of humus, clay, and important minerals?
layer P
layer Q
layer R
layers S
Examine the four soil profiles, labeled 1-4.
Which soil profile is most suitable for plant growth?
soil layer 1
soil layer 2
soil layer 3
soil layer 4
A wildfire destroyed 50% of the vegetation of a pine forest. After one year, the burnt areas had more herbaceous plant growth than the unaffected areas. What might be a reason for this?
The wildfire made the climate warmer.
The wildfire increased the nutrients in the soil.
The wildfire reduced the population of herbivores
The wildfire reduced the soil moisture content.
Which cause is correctly matched with its effect?
Deaths: The size of the population increases.
Immigration: The size of the population decreases.
Landslide: The amount of rainfall in a particular environment increases.
Wildfire: The life cycles of some trees start over.
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