Scientific Inquiry Diverse ways in which scientists study the natural world. Proposing explanations based on the evidence they gather.
Hypothesis A possible answer to your scientific question. A hypothesis is able to be tested. Ex. Why isn’t my ipod working?
Experiment Testing your hypothesis. Variables – factors that can change in an experiment. Ex. Testing crickets chirping in different temperatures – all crickets must be the same kind, same size container you keep crickets in, type of thermometer.
Independent variable (manipulated variable) – factor of the experiment that is purposely changed. –In cricket experiment, the air temperature is the independent variable. Dependent Variable (responding variable) – factor that changes because of the independent variable. -number of chirps the cricket makes, different number depending on the temperature.
Controlled Experiment An experiment in which only one variable is manipulated at a time. Ex. Cricket experiment: only the temperature is manipulated. Why is this important?
Collecting and Interpreting Data Data – create tables. –An organized way to collect and record your observations. Results – create graphs. –Helps you interpret data. –See patterns, the big picture.
Conclusions Summary of what you have learned from an experiment. Questions to Ask? -Did I collect enough data? -What happened? -Were there any errors?
Communicating Sharing ideas and experimental findings.
Scientific Theories and Laws Well-tested explanation for a wide range of observations or experimental results. Ex. Atomic theory
Scientific Laws Statement that describes what scientists expect to happen every time under a particular set of conditions. A rule of Nature