Scientific Method
Name all 7 steps of the scientific method
Observation, ask a question, form hypothesis, experiment, data, conclusion, share results
The group in an experimental that does not receive the independent variable
control group
Based off what we've talked about in class, name a mistake/flaw someone can make when doing an experiment
Changing too many things at once, not collecting good data, no control group, etc
Independent variable: the variable that is _____________________________
Changed or tested
When is your test?
Friday
Marvin runs an experiment to determine if the earth is flat or round. He finds that the earth is round and then posts his results on social media and goes on a talk show. What step of the scientific method is this?
Share results
The group in an experiment that receives the independent variable
experimental group
Melissa wants to test if chewing gum helps with test scores. She give gum to Kiara while Kiara takes Ms. O's test and then gives no gum to Lilly while she takes Ms. Greer's test. What's wrong with Melissa's experiment? What should she do differently?
taking different tests, should either use way more people like the entire 8th grade class split into two groups. Or she should test Kiara taking a test with gum and then Kiara taking a similar test without gum.
Fill in the blank:
Dependent variable:The variable that is ____________
Control Variable: The variables that stay the _______________________
1) measured
2) same/constant/don't change
What are the two types of data you can collect?
Quantitative and qualitative
Jayden and Luis are lab partners. They are wondering if sugar dissolves faster in cold or hot water. They predict that "If sugar is put in hot water, then it will dissolve faster than if it was in cold water" What step of the scientific method is this?
Form a hypothesis
A hospital is testing a new medicine. Group A is 50 people who are all sick with X diseases. Group A receives the medicine. Group B is also a group of 50 people who is also sick w X disease, but they do not receive the medicine. Which group is the control group and which is the experimental?
Group A- experimental and Group B- control
Juan wants to know if background music helps people focus. He plays music and tests Jeremiah's focus while he's watching TV and Michelle's focus while she's reading? What is wrong with this experiment and how would you redesign it?
Have them do the same activities, choose an activity like a homework assignment that is more reflective of focusing. Use the same person. Test with different kinds of music and no music at all
In your paper spinner experiment, Emma decided to make the wings longer. She keeps the design, and number of paperclips all the same. What variable is the wings?
Independent variable
Is this a testable or non testable question? Does studying while listening to music improve test scores?
Testable
I wonder if cars move faster with different types of gasoline--- this would be what step of the scientific method?
Observation
Control group
In the PTC experiment, students only try the PTC paper and not the paper with nothing on it. What is wrong with this experiment?
No control group
In your paper spinner experiment, Emma decided to make the wings longer. She keeps the design, material and number of paperclips all the same. What variable is overall design, paperclips, and paper? and what would be the dependent variable?
1) control
2) how fast the spinner falls
What is the difference between a testable vs non testable question?
Testable- can run an experiment, answer based in data and facts
Non testable- based in opinions or beliefs
Do I have the gene that makes PTC bitter? If I have the PTC gene, then it will taste bitter
Kayra wants to test if fertilizer helps plants grow more. She has 4 plants. Plant 1 gets no fertilizer while Plants 2,3, and 4 each receive different amounts of fertilizer. Plants 2,3, and 4 would be considered part of which group, control or experimental?
Experimental
Aleiry and Allison are partners in the paper spinner experiment. They decide to test how adding more paper clips affects how fast the paper spinner falls. They also change the size of the paper spinners. What is wrong with this experiment? How should they fix it?
Only change one thing at a time, everything else is a control variable and should stay the same
How many independent variables should there be in an experiment? Phrased differently, How many things should you change at once?
ONE ONE ONE ONE ONE ONE
Give an example of qualitative and quantitative data
Qualitative- the water is boiling and changed colors
Quantitative- the plant is 10 cm tall