Scientific Method Section 1.1

A. Scientific Methodology One Goal of Science provide natural explanations for events in natural world Use those explanations understand patterns in nature and to make useful predictions about natural events

B. Steps of Scientific Method Observations: act of __________ and ___________ events in a careful, orderly way these observations lead to Questions or _______________ which need to be solved 2. Hypothesis: possible ___________ for ______________ or questions that can be ____________

3. Controlled Experiment (test) - only one _________ is changed a) control group: exposed to the same conditions as experimental group _____________for one ______________ ____________(IV)

4. Collect/ Record/ Analyze Data – a) Qualitative Data (___________) b) ______________ Data (numbers; measurements)

5. Conclusions – experimental data is used as evidence to __________, ____________, _________ your hypothesis.

C. Identifying Variables 1. Every experiment involves several variables - ___________________________________

Independent Variables Also called “__________ _________” or IV This is the variable you ____________ change and test Example: the ___________ of the a room

Dependent Variable Also called - “_________ __________” or DV The factor that _______ _________ as a result of the Independent Variable Example: how fast plants grow in response to the ___________ _______.

Controlling Variables Keeping all conditions the same _________ for the _____________ Variable (IV) Example: size of the ____________, type of _____, amount of _______, amount of _______, use of fertilizer, same kind of _________ When all variables are controlled, you can then ___________ that the differences in your results are due to the changes in the ______________ Variable (IV)