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!
During a football game, the opposing team attempted to sack the
quarterback. He was able to avoid being taken down by spinning around quickly three times. Then he
attempted to throw the ball. However, his aim was off, and the pass was incomplete. This lead the
coach to ask “does rotation affect athletic performance.” Later the coach designed an
experiment to test this. (see table below).
Trial 01: Quarterback rotates three times and throws the football at a
target 20 meters away.
Trial 02: Quarterback rotates four times and throws the football at
a target 20 meters away.
Trial 03: Quarterback rotates five times and throws the
football at a target 20 meters away. | | | | | | |
Identify the
manipulated variable (independent variable) in this experiment.
a. | number of throws | c. | type
of ball | b. | outside temperature | d. | number of
rotations |
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2.
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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 type of surfaces used | c. | the type of ball chosen | b. | the lengths of the
surfaces | d. | the force needed to roll the ball |
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3.
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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 each plant
used. | c. | amount of phosphorus used per
plant. | d. | type of phosphorus
used. |
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4.
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Can human beings read minds? You can easily test
this. First get a few volunteers to act as “receivers.” Next get ten index cards,
and write one letter or symbol on each card. Without showing the cards to the
“receivers,” concentrate on the image on one card, and try to send that image to the
receivers. Ask the participants to write down any images that appear in their minds. Repeat this ten
times with a different card each time.
Question: Can human beings read minds? | | | | | | |
What is the independent variable
(manipulated variable)in this experiment.
a. | type of index cards | c. | number of senders | b. | images on the
cards | d. | number of receivers |
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5.
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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 species of plants | b. | the distance of the plants from the light source | c. | different types of light sources | d. | the height of each plants ceramic pot |
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6.
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Olivia purchased three brands of hair spray in
order to test them. She sprayed her hair with one brand for exactly 30 seconds in the morning. For
the rest of the day she observed her hair to determine if the spray was still holding her hair in the
desired shape. At the first moment she noticed the spray failing to hold her hair in place, she wrote
down the time. She duplicated this experiment three times with each brand of hair spray.
Hair Spray Brands | Hold Rate (Trial 01) | Hold Rate
(Trial
02) | Hold Rate
(Trial 03) | | NEXXUS | 6 hrs/3 min | 5 hr/ 39 min | 6 hrs/12 min | | TRESEMME | 7 hrs/32
min | 8 hrs/1 min | 7
hrs/18 min | | L’OREAL | 5 hrs/ 45
min | 6 hrs/15 min | 6
hrs/20 min | | | | |
What was the manipulated variable (independent variable) in this
experiment?
a. | Brand of hair spray | c. | Length of hair | b. | Type of blow
dryer | d. | Hold rate |
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7.
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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. | plant growth | c. | time
needed for germination | b. | amount of soil in
the pots | d. | type of soil |
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8.
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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 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 (see table below).
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 girls | c. | Ind. variable-type of drink | b. | Ind. variable-length of the soccer game | d. | Ind.
variable-hydration level |
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9.
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Question: Does the brand of chewing
gum affect how long the flavor lasts?
Two students
conducted an experiment to test this. They obtained three different brands of peppermint gum, and
they determined that each stick of gum had the same mass. One at a time, they chewed a stick of gum
and used a stopwatch to time how long the flavor lasted.
What is the independent variable
(manipulated variable)in this experiment.
a. | flavor of gum | c. | type
of stopwatch | b. | brand of
gum | d. | number of students |
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10.
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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 diameter of the flowers | c. | the time of year | b. | the time of
day | d. | the number of flowers |
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