Chapter 1: Evolution, Themes of Biology, and Scientific Inquiry Flashcards
Biology
scientific study of life
Scientific Method
Process of science
Science
way to know and understand the natural world
Data
Recorded Observations
Qualitative Data
Recorded descriptions
Quantitative Data
Expressed numerically, organized into tables and graphs
Hypothesis
an explanation, based on observations and assumptions, that leads to a testable prediction
Experiment
a scientific test carried out under controlled conditions
Inductive Reasoning
draws conclusions through logical processes; repeated observations
Deductive Reasoning
uses general premises to make specific predictions
Controlled Experiment
one that is designed to compare an experimental group with a control group
Experimental Variables
feature or quantity that varies in an experiment
Independent Variable
One the researchers manipulate
Dependent Variable
Predicted to be affected by the independent variable
Scientific Theory
broad scope statement heavily tested and supported by a huge body of evidence
Steps of the Scientific Method:
Ask a Question, Research, Hypothesize, Test, Analyze Results/Conclude, Share results
Science is a powerful tool, but not perfect. What are some things that science cannot help us with? What questions can we not answer with science?
-Limited to observable and quantifiable subjects
-Cannot explain supernatural phenomena
-Cannot explain theological ideas/beings
Ex: God, ghosts, spirits, premonitions, “vibes”
A hypothesis must be ________. What does this mean?
-Testable
-Must be able to be measured/tested
Ex: “The wind is God’s farts” is not a hypothesis
Objects of Scientific Study must be ______&_______. What does this mean?
-Observable & Quantifiable
-Must be able to be observed/recorded/recreated
Ex: A bear is observable and quantifiable. Big foot is not.
One feature of a well-designed experiment is the use of a control. What is a control, and why is it important? What does a control tell the scientist about the results of their experiment?
- Control is the factor in the experiment that is not being manipulated
- Important because it rules out factors other than the independent variable
- Control group tells scientist that his results are not because of outside factors
What is the goal of science?
To understand natural phenomena