1. Students want to determine how vegetation affects a.) Soil with no grass
soil erosion. They collect four soil samples of equal
starting mass with different types of vegetative cover,
as seen in the table below. Each sample is placed in
a three-sided plastic dish that can drain into a beaker
and is exposed to the same amount of consistent,
steady rainfall for ten minutes. The water and soil
runoff are collected in the beaker and separated. The
average values for each sample are provided below.
Which of the following is the control group for this
experiment?
a.) Soil with no grass
b.) Soil with newly sprouted grass
c.) Soil with mature grass
d.) Soil with dead grass
2. Students want to determine how vegetation affects c.) Percent change in mass
soil erosion. They collect four soil samples of equal of the soil sample
starting mass with different types of vegetative cover,
as seen in the table below. Each sample is placed in
a three-sided plastic dish that can drain into a beaker
and is exposed to the same amount of consistent,
steady rainfall for ten minutes. The water and soil
runoff are collected in the beaker and separated. The
average values for each sample are provided below.
Which of the following is a dependent variable in the
experiment?
a.) The type of soil
b.) Initial mass of the soil sample
, Unit 4 APES Exam MCQ Questions with Answers Rated A
c.) Percent change in mass of the soil sample
d.) Amount of rainfall the soil receives
3. A group of students wanted to determine if soil tex- b.) Soil samples taken
ture can vary by location. Several students brought in from ditterent locations
a sample of soil from their backyards. Each student
added their soil sample of equal mass to a jar with
exactly the same amount of water, shook the contents
so that all soil particles were suspended in the water,
and left the jars covered overnight. The next morning,
the soil particles had settled out into layers and stu-
dents could determine the percentage of each type of
particle. The results of their soil test are shown below.
Which of the following describes the independent vari-
able in this investigation?
a.) Percentage of each particle size in each soil sample
b.) Soil samples taken from different locations
c.) Time required for each soil sample to settle
d.) Addition of water to each soil sample
4. A group of students wanted to determine if soil tex- a.) Percentage of each
ture can vary by location. Several students brought in particle size in each soil
a sample of soil from their backyards. Each student sample
added their soil sample of equal mass to a jar with
exactly the same amount of water, shook the contents
so that all soil particles were suspended in the water,
and left the jars covered overnight. The next morning,
the soil particles had settled out into layers and stu-
dents could determine the percentage of each type of
particle. The results of their soil test are shown below.