1. Biology in the 21st Century
SECTION
1.3
SCIENTIFIC THINKING AND PROCESSES
Power Notes
Biology in the 21st Century
CHAPTER 1
Observing
Evaluating results
Forming hypotheses
Analyzing data
Testing hypotheses
Experiment
Copyright © McDougal Littell/Houghton Mifflin Company.
Independent variables
Dependent variables
Constants
Theory:
Unit 1 Resource Book McDougal Littell Biology
Power Notes 11

2. KEY CONCEPT Science is a way of thinking, questioning, and gathering evidence.

3. Like all science, biology is a process of inquiry.
Scientists make careful and systematic observations.
Scientists record observations as data.
Scientists form a hypothesis as a possible answer to a     question.
Scientists test their hypotheses and analyze their data.

4. Biologists use experiments to test hypotheses.
Observational studies allow scientists to describe a phenomenon.

5. Experimentals allow scientists to determine what causes a phenomenon.

6. Experimental studies allow scientists to determine what causes a phenomenon.
Independent variables are manipulated.
Dependent variables are observed and measured.
Constants are conditions that are kept the same.

7. A theory explains a wide range of observations.
Theories explain a wide range of observations and experimental results.
A theory is supported by a wide range of scientific evidence.
Theories can change based on new evidence.

8. The Scientific Method by Teachers Pet

9. Turn to page 17 of the textbook
Complete questions Use sentences.
Hints: restate the question in your answer
Never use they, it , he , she without identifying first (this is called identifying the antecedent)
Check spelling, especially of vocabulary words
USE vocabulary words in your answer.