Bell Ringer 8-18-09 • Complete Conclusion Questions from yesterday’s lab.
Bell Ringer 3-23-09 • Before time is up, list all the facts that you can remember from this class from last semester. (whoever gets the most, might get a prize) • 3 minutes…go!!
Bell Ringer 8-18-09 • What are 3 ways scientists think? • What are the two types of observations? • Give an example of each type of observation. You can write them beside #2.
Scientific Inquiry Chapter 1 Section 2
Scientific Inquiryrefers to the different ways scientists study the natural world.
The Process of Inquiry • Posing questions (scientific) • Developing Hypotheses • Designing Experiments (variables) • Collecting and Interpreting Data • Drawing Conclusions • Communicating Ideas and Results
Scientific Method… 7 Steps • Identify the problem • What do you want to know • Research • Collect information needed for questions • Ask questions or use the internet • Form a hypothesis • This is an educated guess to your problem • Experiment • Test your hypothesis • Manipulated (Independent) vs Responding (Dependent) Variable
5.Observe • What’s happening in the experiment • What do you see • Collect data • write down what’s happening in tables, charts, etc. • Draw a conclusion • The answer to your hypothesis • What you learned from the experiment Repeat....Repeat.…Repeat…Repeat some more
After the seven steps are done you should communicate your results with other scientists.
Experimenting • While experimenting there are some factors that are important. • You need to examine all variables. • Variables are factors that can change in an experiment.
Types of Variables: • Independent (manipulating) the one you change • dependent (responding) expected to change as a result of changing the independent variable
How Science Develops • Scientific Models • Scientific Laws • Scientific Theories
1. Scientific Model- representation of an object or event used as a tool to understand the natural world
2. Scientific Law- a rule that describes a pattern in the natural world. • This is usually a statement that describes what scientists expect to happen every time under a particular set of conditions. • Ex: Sky Diver- Based on The law of gravity the sky diver will eventually land back on earth
3. Scientific Theory- explanations that have been tested repeatedly and have the same results. • Future evidence may not support a theory due to the increase of technology so scientists may modify the theory or discard it. • Ex: Sun revolved around the earth new evidence earth revolves around sun
Exit Quiz 8-18-09 • What unit measures length? • What do quantitative observations involve? • Give an example of a quantitative observation. • What are the two types of variables we discussed today? • Which variable is the one we change on purpose?