Online Assessment
Instructions
1) Type in your first and last name in the
“Name” box in the top-left corner.
2) Next type in your teacher’s name in
the “ID” box.
3) Then type in your school’s full name in the
“Email” box.
4) Select the best answer for each question.
5) When you
are finished click the “Grade and Submit” button.
6) The grade will be emailed
to your teacher.
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1.
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NOTE: This assessment is only for Mr.
Elliott’s students.
---If you are not one of Mr. Elliott’s students then please go
back to the website and click on the link for other teachers. Thanks!
Carmen designs an experiment to determine how surface type affects how far
a ball will roll across a variety of surfaces.
What is the dependent
variable?
a. | the lengths of the surfaces | c. | how far the ball rolls | b. | the type of
surface | d. | the type of ball chosen |
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2.
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The picture below illustrates an experiment
designed by Matthew to test plant growth using potted green bean sprouts placed in front of a
window.
Which of these is the dependent
variable in this experimental design?
a. | how tall each plant grows | c. | the height of each plant’s ceramic pot | b. | different types of light sources | d. | the distance
from the light source |
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3.
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Kendyl and Jennifer want to test how the amount of
salt on McDonald’s french fries affects the blood pressure of 8th grade boys and girls that eat
them.
Identify the dependent variable.
a. | the amount of salt. | c. | number of french fries. | b. | blood
pressure. | d. | number of boys and girls tested. |
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4.
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Caroline and Autumn wanted tested how effectively
different brands of hair spray work in holding hair in place while exercising. They obtained four
brands of hair spray, and they sprayed their hair with one brand of hair spray for exactly 30
seconds. Next they each went to the gym and exercised on a treadmill for exactly 30 minutes at a
moderate pace. At the first moment they noticed the spray failing to hold their hair in place, they
wrote it down. They conducted three trials with each hair spray brand, and they put their
data into a table.
Hair Spray
Brands | Hold Time (Trial
01) | Hold Time
(Trial 02) | Hold Time
(Trial
03) | | PAUL MITCHELL | 25 min/20
sec | 23 min/ 15 sec | 22
min/18 sec | | TRESEMME | All 30 min | All 30 min | All 30
min | | PANTENE | 29 min/35 sec | 29 min/29 sec | 28 min/58
sec | | CLAIROL | 18 min/59 sec | 20 min/01 sec | 19 min/31
sec | | | | |
Identify the
dependent variable.
a. | Brand of hair spray | c. | Number of brands | b. | Length to spray
time (30 sec) | d. | Length of hold time |
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5.
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Austin wants to test how the amount of sugar in one
brand of cereal affects the behavior of young children that eat that brand of cereal for breakfast.
Identify the dependent variable.
a. | the amount of sugar. | c. | number of children. | b. | children’s
behavior. | d. | the amount of cereal |
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6.
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An engineer is designing an electrical powered
robot to help construction workers. She wants to know how much electricity will be needed for the
robot to carry both light and heavy loads a distance of 100 meters. The results of this experiment
are shown in the chart below.
Trials | Weight of Load | Amount of Electricity Used | | Trial 01 | Carried 25 pounds | 20,000
volts | | Trial 02 | Carried 50 pounds | 40, 000 volts | | Trial 03 | Carried 100
pounds | 85,000 volts | | | |
What is the responding variable (dependent variable) in this
experiment?
a. | The amount of weight that was
carried | b. | The number of experimental
trials | c. | The amount of electricity
used | d. | The number of engineers on the design
team |
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7.
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A runner wants to know if drinking water before a
5-kilometer race will help him run faster. Over a three day period he conducts three experimental
trials. Two hours before running he consumes specific amounts of cool water.
Trials | Amount of
Water | Time to run 5 kilometers | | Trial 01 | One 12 oz bottle (355 mL) | 25
minutes | | Trial 02 | Two 12 oz bottles (710
mL | 24 minutes | | Trial 03 | Three 12 oz bottles
(1065 mL) | 21 minutes | | | |
What is the dependent variable in this experiment?
a. | The distance of the race (5
kilometers) | c. | The time it took to run 5
kilometers | b. | The amount of
water consumed | d. | The number of trials |
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8.
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A fisherman wants to find out which kind of bait
works best for catching catfish in Percy Priest lake near Nashville, Tennessee. He uses three
different kinds of bait (worms, crickets, and caterpillars). He fishes for 3 hours with each bait. He
catches one catfish with the worms. He catches 5 catfish with the crickets. He catches 3 catfish with
the caterpillars.
What is the dependent variable in this experiment?
a. | The different cost for each type of
bait | b. | The type of bait used (worms, crickets,
caterpillars) | c. | The number of
catfish that he caught | d. | The amount of time
that he fished (3 hours each) |
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9.
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Alexis and Candace were testing different surfaces on a ramp to see how the
friction affected the speed of a marble (see above) rolling down the ramp. They predicted that the
marble would travel fastest down the ramp when the surface covering had the least friction. The used
sandpaper, a wool blanket, and Velcro as coverings for the ramps. For each surface covering they
released the marble at the top of the ramp and recorded the time it took for it to roll down to the
bottom.
What is a responding variable (dependent variable) in this
investigation?a. | the different types of ramp
coverings | b. | how fast the marble moved down the
ramp | c. | ramp height and the type of marble
(Cats-Eye) | d. | pushing or not
pushing the marble down the ramps |
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10.
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Based on the graph shown above, the
dependent variable is...?a. | time measured in months | b. | the number of days each month | c. | the peak in the line graph during October | d. | the population of birds |
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