Prologue Flashcards
What is the independent variable in an experiment?
Variable that is deliberately changed (manipulated)
What is the dependent variable in an experiment?
Variable that is observed and changes in response to the independent variable (responding)
What is the role of a control group?
-comparison
The group that is used for comparison- exposed to same conditions as experimental group
What is the role of an experimental group?
-test change (factor)
The group - exposed to same conditions as- test the change
What is the role of constants?
The constants are any part of the experiment that stays the same.
consististy
How do scientific theories compare to hypotheses?
Theories are a well-tested explanation of observations and hypotheses.
Identify the characteristic based on the definition: “Living things must use energy and consume nutrients to carry out the chemical reactions that sustain life.”
Metabolism
6 pill bugs went to the freshwater side and 2 pill bugs went to the saltwater side” is an example of a(n)
___quantitative_______ observation.
5 steps of The Scientific Method
OQHEC Observation Question Hypothesis Experiment Conclusion
Independent variable vs. dependent variable
Independent- variable that is changed (water)
Dependent- variable tested by change (size of plant)
Quantitative data vs. qualitative data
Quantitative-#number data
Qualitative- descriptive data
7 characteristics of life
Organization of cells & DNA Metabolism Homeostasis Growth Reproduction Response Evolution
1) Organization of cells & DNA
- cells organized into tissues(help function)
2) Metabolism
- use energy and consume nutrients to carry out chemical reactions that sustain life
3) ❤️Homeostasis
- tendency to resist change in order to maintain stable internal environment
4) ❤️Growth
- increase the physical size
5) Reproduction
- asexual vs. sexual
6) ❤️Response
- stimulus reaction causes the response
- change based on environment
- ex. leaves falling
7) evolution
- genetic makeup of population changing overtime
In designing a controlled experiment, a scientist
tests only one variable at a time
Which of the following is an inference, not an observation?
Termites follow the ink due to the smell.
