Elaine is studying the effect of sleep deprivation on motorists. The chart below shows the reaction times of the drivers she studied. What is the independent variable in Elaineโs study?
Total Hours awake
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trap
No points!
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gold
Win 50 points!
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fairy
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baam
Lose 15 points!
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25
The summary at the end of an experiment that explains the results.
Conclusion
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25
In an experiment, the one variable that is changed is called the
Independent Variable
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lifesaver
Give 20 points!
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shark
Other team loses 25 points!
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fairy
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banana
Go to last place!
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10
A scientist hypothesizes the the temperature at which an alligator's egg is incubated will determine whether the alligator will be male or female. The independent variable is
Temperature
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boom
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seesaw
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shark
Other team loses 25 points!
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baam
Lose 15 points!
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15
A scientist hypothesizes the the temperature at which an alligator's egg is incubated will determine whether the alligator will be male or female. The dependent variable is
The gender of the baby
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thief
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shark
Other team loses 10 points!
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shark
Other team loses 20 points!
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thief
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5
There are two types of data. Which type of data involves numbers that are obtained by counting or measuring?
Quantitative
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15
What is a hypothesis?
An educated guess or If/Then statement
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information gathered using your 5 senses
Observation
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15
Ms. Jenks sets up an experiment to see how the mass of a ball affects the distance it rolls off a ramp. Identify the independent variable.
The mass of the ball
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25
What step does every scientific experiment begin with?
Question/ Problem
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15
A students was doing an experiment using the scientific method. Every three days the student plans to count the green leaves. Which would be a good hypothesis for this experiment?
If plants are places in bright light, then they will grow more green leaves than in dim light.
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15
Marcus is completing a science experiment for class. He wants to see what effect water temperature has on plants. If his experiment contains one independent variable, which of the following would NOT be a constant in his experiment?