Steps of the Scientific Method
Variables
Identify the Variables
Identify the Variables 2
Vocabulary
100
The first step of the Scientific Method is...
Identify the Problem/Question
100
The factor that "I change" or the factor being tested.
The Independent Variable
100
Susan wanted to know which fertilizer would help her grow the most tomatoes. In order to do the experiment, she grew one tomato plant with Scott’s fertilizer, the other with Miracle Grow and one with no fertilizer. She gave them 50 milliliters of water each day for 30 days and counted the number of tomatoes at the end of her experiment. What is the Independent Variable in this experiment?
Type of Fertilizer
100
Timmy’s mom loves to cook pasta and wanted to know which pasta brand would cook the fastest. In order to do the experiment she boiled 1 liter of water in 3 different pots and added 1 box of Berilla pasta into one pot. In the other pot she added 1 box of Prince Pasta, and in the last one she added her regular stop and shop brand. She measured the time it took to the cook the pasta. What is the Independent Variable in this experiment?
Type of Pasta
100
The group of steps commonly used by scientists in gathering information to test a hypothesis and solve problems is called
The Scientific Method
200
After Identifying the Problem you need to _______________ before forming a hypothesis.
Conduct background Research / Observations
200
"Data" or the factor being measured or observed.
Dependent Variable
200
Susan wanted to know which fertilizer would help her grow the most tomatoes. In order to do the experiment, she grew one tomato plant with Scott’s fertilizer, the other with Miracle Grow and one with no fertilizer. She gave them 50 milliliters of water each day for 30 days and counted the number of tomatoes at the end of her experiment. What is the Dependent Variable in this experiment?
Number of Tomatoes
200
Timmy’s mom loves to cook pasta and wanted to know which pasta brand would cook the fastest. In order to do the experiment she boiled 1 liter of water in 3 different pots and added 1 box of Berilla pasta into one pot. In the other pot she added 1 box of Prince Pasta, and in the last one she added her regular stop and shop brand. She measured the time it took to the cook the pasta. What is the dependent variable in this experiment?
Amount of time to cook pasta
200
The reason why we must change only one factor in the experiment and keep all other factors constant. Also the reason that experiments should be repeated.
To be sure the experiment is valid or accurate.
300
This is the step in which you form an educated guess.
Hypothesis
300
Things that do are kept the same in an experiment to ensure a fair test.
Factors held Constant
300
Susan wanted to know which fertilizer would help her grow the most tomatoes. In order to do the experiment, she grew one tomato plant with Scott’s fertilizer, the other with Miracle Grow and one with no fertilizer. She gave them 50 milliliters of water each day for 30 days and counted the number of tomatoes at the end of her experiment. What is the control group in this experiment?
No Fertilizer
300
Timmy’s mom loves to cook pasta and wanted to know which pasta brand would cook the fastest. In order to do the experiment she boiled 1 liter of water in 3 different pots and added 1 box of Berilla pasta into one pot. In the other pot she added 1 box of Prince Pasta, and in the last one she added her regular stop and shop brand. She measured the time it took to the cook the pasta. What are two factors held constant in this experiment?
1. amount of water 2. same person 3. same pot type (other acceptable answers)
300
A testable explanation for a question or problem is
A Hypothesis
400
After collecting and analyzing data, you draw a _____________.
Conclusion
400
The group in an experiment that is used for comparison. It is not treated with the Independent Variable.
Control Group
400
Susan wanted to know which fertilizer would help her grow the most tomatoes. In order to do the experiment, she grew one tomato plant with Scott’s fertilizer, the other with Miracle Grow and one with no fertilizer. She gave them 50 milliliters of water each day for 30 days and counted the number of tomatoes at the end of her experiment. What are two factors held constant in this experiment?
1. same amout of water 2. same amount of time 3. same type of plant (other acceptable answers.)
400
Chris Brown wanted to be fit for his next tour so he decided to join the gym. He wanted to know which exercise would increase his heart rate the most? He counted his heart rate after doing three different exercises (jumping jacks, pushups, and squats) for thirty minutes and compared it to when he was just watching TV for 30 minutes. What is the independent variable in this experiment?
Type of exercise (jumping jacks, pushups, squats)
400
Numerical data is said to be _______________.
Quantitative
500
The last step of the scientific method is to ____________.
Retest (to ensure accurate results)
500
In a good scientific experiment, how many factors should be changed or manipulated?
ONE!
500
Chris Brown wanted to be fit for his next tour so he decided to join the gym. He wanted to know which exercise would increase his heart rate the most? He counted his heart rate after doing three different exercises (jumping jacks, pushups, and squats) for thirty minutes and compared it to when he was just watching TV for 30 minutes. What is the dependent variable in this experiment?
Heart Rate
500
Chris Brown wanted to be fit for his next tour so he decided to join the gym. He wanted to know which exercise would increase his heart rate the most? He counted his heart rate after doing three different exercises (jumping jacks, pushups, and squats) for thirty minutes and compared it to when he was just watching TV for 30 minutes. What is the control group in this experiment?
Watching TV for 30 minutes
500
Observational data is said to be __________________.
Qualitative
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