Chapter 1: Practicing Science

Question 1

investigative approach to acquiring knowledge

Answer 1

scientific method

Question 2

• basic info on biological structures or details or biological processes
• provides info about systems that have no yet been well studied
• descriptive science

Answer 2

observational data

Question 3

• result of careful manipulation of the system under study
• answers questions about why or how systems work
• experimental science

Answer 3

experimental data

Question 4

scientists develop a tentative explanation to explain observed facts

Answer 4

hypothesis

Question 5

statement of what they would see if the hypothesis being tested is NOT correct

Answer 5

null hypothesis

Question 6

factors that differ among places or individuals

Answer 6

variables

Question 7

statements about what the researcher expects to happen to one variable if another variable changes

Answer 7

predictions

Question 8

-must always consider this when designing experiments

Answer 8

alternative hypotheses

Question 9

• represents a null hypothesis

- tells us what we would see in the absence of the experimental manipulation

Answer 9

control

Question 10

everything is exactly the same, or as close as possible except for the experimental variable

Answer 10

controlled experiments