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Steps of Scientific Method
Observation v. Inference, Quantitative v. Qualitative
Testable Questions and Hypotheses
Variables
Define Me
100
What are the steps of the scientific method in order?
1) Problem/question 2) Research 3) Write a Hypothesis 4) Experiment 5)Analyze Data 6) Conclusion
100
The following is an example of an observation or inference: The baby wants food?
Inference
100
Is the following question testable or non testable? Which brand of dog food is best?
Non testable
100
One chicken is injected with a growth hormone while another chicken is not injected. Both chickens are weighed after a year. What is the Independent variable?
Growth Hormone
100
Something we can observe with one of our five senses. Recording of facts
What is an observation?
200
In which step of the scientific method do you create graphs and interpret them?
Data Analysis
200
The following is an example of an observation or inference: The window is broken in 5 pieces.
Observation
200
Is the following question testable or non testable? Which brand of chocolate melts the quickest?
Testable
200
A bug repellant is sprayed on one arm the other arm is not sprayed. The number of bug bites is recorded after 2 hours. What is the DEPENDENT variable?
Number of bug bites
200
A conclusion reached on the basis of evidence and reasoning
What is an inference
300
In which step of the scientific method do you write a testable question?
Problem/Question
300
The following is an example of an observation or inference: The man is a Sox's fan.
Inference
300

What makes a testable question?

-not based on opinion -measurable -testable

300
Group A exercises for a month. Group B does not exercise for a month. They measure the amount of weight they gained/ Identify the IV, DV, and Control
IV: Excercise DV: Weight Control: Group B
300
A factor that is changed or controlled in a scientific experiment.
What is an independent variable
400
In which step of the scientific method do you write your procedure?
Experiment
400
Is the following a quantitative or qualitative observation? The ball flew past us at 95mph.
Quantitative
400
Isabella recieved an IPod docking station for her birthday. She wanted to take it to the beach for a day but wasn't sure which battery brand would last the longest. She decides to buy three different brands. Energizer, Duracell, and Panosonic. Write a testable question for Isabella.
Which brand of battery, will last the longest? How does changing the brand of battery affect how long it lasts?
400

One plant is given sunlight for 12 hours a day. Another plant is not given any sunlight. After 3 weeks, we compare how green each plant looks. Identify the IV, DV, Control.

IV: Sunlight DV: Color Control: Plant in the shade

400
A factor that is measured in a scientific experiment.
What is the dependent variable?
500
In which step of the scientific method do you make an educated prediction about your question
Hypothesis
500
The white ball hit the window.
Qualitative
500
Write a hypothesis for the following testable question: Which brand of soda, Sprite or RC will go flat the quickest?
If we use RC then it will go flat the quickest because RC has less gas.
500
Javier sleeps 9 hours the night before his science exam. His twin sister has the same exam and sleeps 6 hours the night before the test. Afterwards, they compare their scores. What is wrong with the experiment?
Not enough trials.
500
In a scientific experiment a group separated from the rest of the experiment where the independent variable being tested cannot influence the results.
What is a control group?