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: If your teacher’s last
name is Elliott, then you are doing the wrong assessment.
---This assessment is only for
students of other teachers.
---If your teacher is Mr. Elliott, then please go back to the
website and click on the first assessment link instead. Thanks!
Kenny and Robert were interested in learning
what type of ball would travel the farthest when hit with a baseball bat. So they obtained three
different types of balls, and they placed them on a platform that was 1 meter in height. Then Kenny
hit each ball off the platform as hard as he could. Then they measured how far each ball traveled.
Their results are displayed below.
Ball
Type | Trial 01 | Trial 02 | Trial 03 | | Baseball | 48m | 47m | 50m | | Softball | 42m | 45m | 45m | | Golf ball | 37m | 34m | 39m | | | | |
Identify the
independent variable in this experiment.
a. | number of balls | c. | brand
of the balls | b. | Number of
trials | d. | type of ball |
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2.
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A student wants to test how the concentration of
phosphorus in a fertilizer affects plant growth.
In designing this experiment the independent
variable would most likely be the...?
a. | height each plant grows after given
fertilizer. | b. | type of phosphorus
used. | c. | type of each plant used. | d. | amount of phosphorus used per plant. |
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3.
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A student designs an experiment to determine how
surface type affects the amount of force needed to roll a ball 20 meters. What is the independent
variable?
a. | the force needed to roll the ball | c. | the type of ball chosen | b. | the type of
surfaces used | d. | the lengths of the surfaces |
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4.
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The picture below illustrates an experiment
designed to test plant growth using potted green bean sprouts placed in front of a
window.
Which of these is the independent
variable in this experimental design?
a. | different types of light
sources | b. | the height of each plants ceramic
pot | c. | the distance of the plants from the light
source | d. | different species of
plants |
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5.
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A candy company wants to determine what color they
should make their new candies to maximize sales. They perform a scientific study at a number of
shopping malls, offering bright purple, royal blue, and lime green colored candies. They ask the
participants to rate the colored candies from their favorite to least favorite.
It this
experiment candy color is the...?
a. | control variable | c. | independent variable | b. | dependent
variable | d. | qualitative variable |
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6.
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Emily and Maddie were
interested in learning what kind of drink best hydrates a person after a tough soccer game.
They decided to do an experiment using water, Coke, and Gatorade. They selected three girls from the
soccer team that were the same age, same height, and had the same body weight. Each girl
played for one hour in the same soccer game at the same time. At the end of the game, at the
same time, each girl was given one liter of drink. Then one hour later their hydration levels were
measured.
| Soccer
Player | Drink | Hydration
Level | | | Lauren | Water | 75% | | Christina | Coke | 66% | | Natalie | Gatorade | 88% | | | | | |
Identify the independent variable (manipulated variable) is this
experiment?
a. | Ind. variable-number of boys. | c. | Ind. variable-hydration level. | b. | Ind. variable-length of the soccer game | d. | Ind. variable-type
of drink. |
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A student wondered if drinking an energy drink
could enable you to run faster. So she asked ten 8th grade students to act as an experimental group.
Each student ra 20m as fast as they could after drinking 355mL (12oz) of energy drink. All
three trials were conducted in the gym, and for each trial the temperature was 22.2 degrees Celsius
Three trials shown below
1st Trial: Day 01, Time: 8:00 A.M., run 20m after drinking Red
Bull energy drink
2nd Trial: Day 02, Time: 8:00 A.M., run 20m after drinking Monster energy
drink
3rd Trial: Day 03, Time: 8:00 A.M., run 20m after drinking Rock Star energy
drink
What was the independent variable in this experiment?
a. | The water | c. | The
amount of energy drink | b. | The type of energy
drink | d. | How fast they ran |
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8.
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Sara and Haley conducted an
experiment to test which soil would be BEST for growing corn plants. They used all three types
of soil seen the jar above: (1) sand, (2) silt, and (3) clay. They also made a mixture of soil using
equal parts of these three types of soil. Then they planted corn seeds in four identical pots and
placed the pots in the sunlight. They watered the pots every day and tracked the seed germination and
plant growth.
What was the manipulated variable (independent variable) in this
experiment?a. | type of soil | c. | time
needed for germination | b. | amount of soil in
the pots | d. | plant growth |
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Shawn is planning a scientific experiment. He wants
to learn whether the time of day has an affect on how far the rose petals in his mother’s rose
garden open. He plans to measure the diameter of each flower every hour during a sunny day in the
spring.
What is the independent variable in Shawn’s experiment?
a. | the time of day | c. | the
diameter of the flowers | b. | the number of
flowers | d. | the time of year |
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10.
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Blake wants to determine if the mass of a model
rocket affects how long the rocket is able to stay up in the air. To do this, he constructs three
identical rockets and then fills two of the rockets with varying amounts of sand to add mass. He then
launches the rockets one at a time and records how long they are able to stay airborne.
What is the independent variable in Blake’s
experiment?
a. | the materials out of which the rockets were
made | b. | the force with which each rocket is
launched | c. | the time the rockets remain
airborne | d. | the masses of the model
rockets |
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