Chapter 1 - Investigating Human Biology

Question 1

Define Observation

Why, how, and when is it used?

Answer 1

The process of using the senses to acquire information

• essential part of science
• regardless of the procedure used, will involve some form of observation
• scientists are looking for patterns
• when a pattern becomes evident it may be possible to draw tentative conclusions

Question 2

Define controlled experiments

Answer 2

Sometimes called fair tests

An experiment in which there are two almost identical set-ups; the only difference between them is the one variable being tested