Bell Ringer List the 7 steps of the scientific method. (Don t look them up, I want to know what you know)! If you are unsure of the steps you can try to describe the process.
Science Assignment Log Day 1 Introduction & Syllabus Day 2 Lab Safety Day 3 Lab Safety and Spongebob Activity Day 4 Safety Lab Quiz & Ch 1 Vocab Day 5 Scientific Variables Day 6 Scientific Method
Scientific Method
Comes from the Latin verb: Science Scire
Galileo Galilei Lived in the 16th century Italian Philospher, Mathematician, and Scientist Perfected the telescope Hobby: Looking at the stars Discovered that the Earth was not at the center of the universe.
Galileo Galilei
Hypothesis If gravity is constant, then everything will fall at the same rate.
Experiment Dropped two bowling balls of diffferent weight at the same height and time to see if they would hit the groud at a different rate or not.
Scientific Method in Everyday Life
Step 1: Question Ask the QUESTION Identifiy the problem or what you want to know. Car Scenario: Why won't my car engiene turn on?
Step 2: Research. Research Gathering data, information, and facts to advance your knowledge or understanding of a subject.
Goals of Research Observe Predict Determine the cause Explain
Step 2: Research Car Scenario: What kind of research would you do if your car engine wasn't working?
Step 3: Hypothesis Hypothesis A testable explination for an observation or question. But a HYPOTHESIS is MORE than a guess it is LOGICAL.
Step 3: Hypothesis Car Scenario: If the car has a new battery, then the car engine will start.
Step 4: Experiment Experiment An organized procedure designed to test the hypothesis under controlled conditions. The experiment collects data.
Step 4: Experiment Car Scenario: Replace the car battery with a new one.
Step 4: Experiment Experiments are designed to pinpoint cause and effect relationships. To test one variable scientist use TWO groups or TWO situations at a time.
Experimental Variables Independent Variable The variable that gets changed in the experiment or is the variable being tested. Dependent Variable The variable that is affected in the experiment and relies on the independent variable. IT IS MEASURED! Control The variable that DOES NOT CHANGE so that you can make a comparison.
Step 5: Data & Observations Data The information collected during an experiment. Observations A piece of information we gather using our senses sight, hearing, smell, and touch.
What types of tools do scientist use to collect data?
Step 5: Data & Observation Car Scenario: The car engine will now turn on.
Two Data Types Qualitative Data Quantitative Data
Qualitative Data Qualatative Data Focuses on descriptions. Example: Soft or Hard Colors Yellow, Green, Purple Wet or Dry
Quantative Data Quantative Data Focuses on numbers. Example: 25 cm 2.3 grams Liters, inches, pounds, etc.
Step 6: Analyze Data After the experiment scientist organize and analyze their data. Scientist use GRAPHS, CHARTS, AND TABLES to CLEARLY communicate the results of the experiment.
Step 7: Conclusion Conclusion A judgement that you form after considering all of the evidence. The conclusion summarizes the experiment and results. IF your conclusion doesn't match your hypothesis YOU MUST RE- EVALUATE.
Error Error When scientist make a mistake and need to do an experiment again. Car Scenario: The new battery did NOT turn on the engine. We MUST revelauate the situation and think of a new idea as to WHY the engine is not working.
Scientific Method Steps Steps 1: Question Step 2: Research Step 3: Hypothesis Step 4: Experiment Step 5: Data & Observation Step 6: Analyze Data Step 7: Conclusions
Identify the Steps of the Scientific Method: Darren is getting ready to leave for work one morning when he realizes he doesn t remember where he left his keys. He supposes they are laying by the back door where he entered the night before. He walks over to the back door, but the keys are nowhere to be found. He then thinks that he could have left them on the dresser in his bedroom. He goes to check, and sure enough, his keys are there! He grabs his keys and then leaves for work.
Honors Practice Activity: Think of an example where you could use the scientific method in your everyday life. Write it DOWN! Use all the seven steps that we have described.
Scientific Theory An explanation based on observations during a repeated experiment. Scientifc Theory SCIENTIFC THEORY IS VALID WHEN IT: Has CONSISTENT OBSERVATIONS Has a hypthesis or prediction can be TESTED Is the SIMPLEST explination for the observation ***A scientifc theory CAN be CHANGED or modified if it is found incorrect.*****
Scientific Law A basic fact that describes the behavior of a natural phenomenon. Scientifc Law SCIENTIFC LAW IS A "RULE OF NATURE" The cause or reason for the SCIENTIFIC LAW is NOT known, BUT the LAW when OBSERVED is the SAME every time.