Vocabulary: What's the Word?
What is an organized set of investigative procedures that scientists use to solve problems?
The Scientific Method
What is a scientific law?
A statement about what happens in nature that seems to be true all the time.
What step comes first in the Scientific Method?
Stating a problem.
Chef Billy wants to see if temperature will affect the chewiness of his chocolate chip cookies.
IV: Temperature. DV: Chewiness of the cookie.
Is this a testable question for an experiment: Is recess fun? Why/Why not?
No, it's based on your opinion and cannot be repeated.
What is a possible explanation for a problem, using your observations and your prior knowledge?
A hypothesis
What three things do models represent?
Ideas, events, and objects
What is the proper format for a hypothesis?
If/then
A florist wants to see if Product X will extend the life of cut flowers, so that they last longer.
IV: Product X. DV: The life of cut flowers.
What is a hypothesis for a problem regarding your pillow and sleeping longer?
If I use a different pillow, then I will sleep longer.
What are scientists conducting when they test their hypothesis?
Experiments
In what two ways can you define a dependent variable?
The variable that is affected by the IV and is the variable that is being measured.
What steps must occur before a hypothesis can be formed?
Stating a problem and gathering information.
Sebastian loves Sundays and thinks the more sleep he gets that night, the better he will do on his assessments.
IV: Amount of sleep. DV: Performance on tests.
What would 2 constants be if the following hypothesis were tested?
If I use a certain type of of gasoline in my car, then the car will last longer.
Amount of oil, same car, driving the same amount of miles...
What do scientists create in an attempt to explain things or events, after many experiments have been done?
Scientific Theories
What is a control?
The standard by which the results can be compared.
What two steps come after testing the hypothesis?
Analyze Data and Draw a Conclusion
I wonder how quickly my math students will memorize their math facts, if we play the same math game regularly.
IV: The frequency of the math games. DV: How quickly they will memorize the math facts.
Why can't the following statement be tested:
A scientist wants to find out why sea water freezes at a lower temperature than fresh water.
They want to find out why instead of which one.
What is occurring when a scientists' expectations affect the outcome of an experiment?
Bias
What is the relationship between an observation and an inference?
You use observations to make inferences.
What must occur if your hypothesis was not supported?
You need to modifying the hypothesis.
I hope we can go to 4 days a week instead of 5, because I think I'll get a lot more work done.
IV: Amount of days in the work week. DV: Amount of work I get done.
What should a scientist do after he has a supported hypothesis over multiple trials?
Share his results