If I increase the volume of water, then the height of the plant will increase. What is the dependent variable?
Height of the plant
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trap
No points!
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seesaw
Swap points!
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shark
Other team loses 25 points!
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baam
Lose 20 points!
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20
A doctor gave the same patient, different numbers of pills each day, the doctor measured the level of histamine (chemical) in his body. Determine the dependent variable.
Level of histamine
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The variable that is measured as the result is called...
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Factors that can change in an experiment are called?
Variables
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What is the effect of increasing the volume of water on the plants growth? What variables would need to be controlled?
amount of sunlight, type of plant, soil
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A student wants to investigate the effect of different liquids on the height of the plant. State 2 variables that should be controlled.
Any two: (Type of soil, volume of liquid, intensity of light, type of plant)
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A student wants to find out if sleeping more would affect his test scores. Identify the independent variable.
Sleeping hours
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How many independent variables are in a fair test?
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lifesaver
Give 20 points!
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star
Double points!
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shark
Other team loses 20 points!
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banana
Go to last place!
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eraser
Reset score!
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gift
Win 25 points!
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fairy
Take points!
5
10
15
20
25
lifesaver
Give 20 points!
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20
A student wants to investigate the effect of different liquids on the height of the plant. Determine the dependent variable.
Height of plant (cm)
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20
A study was done to find if different tire treads affect the braking distance of a car. Identify the independent variable
Tire tread
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A student wants to find out if sleeping has an effect on his test scores. Identify the dependent variable.
Test score
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What is a hypothesis?
It is a statement of what you believe will happen based on the information you have gathered.
