Published on March 7, 2014
Review the scientific method SEVEN STEPS
NCVPS Earth and Environmental Science KELLA RANDOLPH B.S, M.ED.
Teachers explain the nature of science (observation and experimentation), and we are taught to model the scientific process when we conduct our research. Within the model of the scientific process, there are clear logical guidelines for solving scientific problems called the scientific method. THE SCIENTIFIC METHOD
As scientists, you have already made two important assumptions about nature- it is understandable and predictable. You have also figured out that even though this is true, nature also has complex systems. This is why you need those logical and clear steps to conduct research. SEVEN STEPS TO CONDUCT RESEARCH
What is the scientific method? Logical systematic approach to solving a problem
What is always the first step in the scientific method? Make observations and ask a question.
What makes a good hypothesis? A good hypothesis is one you can test!
A hypothesis is an educated guess about how things work. Most of the time a hypothesis is written like this: "If _____[I do this] _____, then _____[this]_____ will happen." (Fill in the blanks with the appropriate information from your own experiment.) YOUR HYPOTHESIS SHOULD BE SOMETHING THAT YOU CAN ACTUALLY TEST, WHAT'S CALLED A TESTABLE HYPOTHESIS. IN OTHER WORDS, YOU NEED TO BE ABLE TO MEASURE BOTH "WHAT YOU DO" AND "WHAT WILL HAPPEN."
If you were to test your hypothesis, you would conduct experiments that include specific factors or variables. Independent variables are the factors that you would change during your experiment. When you change your independent variables, you would also expect to see a change in your dependent variables. Most experiments only test one independent variable at a time. You would also need a control group for your experiment. A control group is a group that represents a standard for comparison to another group. Both groups are identical except for one factor. YOUR EXPERIMENT WOULD BE CLASSIFIED AS A CONTROLLED EXPERIMENT BECAUSE IT CONTAINS A CONTROL GROUP.
What is a control? A control group is a group that represents a standard for comparison to another group. Both groups are identical except for one factor.
What is an independent variable? . Independent variables are the factors that you would change during your experiment. The variable that is being manipulated by the experimenter When you change your independent variables, you would also expect to see a change in your dependent variables.
What is a dependent variable? the thing that changes in reaction to the independent variable A dependent variable is what you measure in the experiment and what is affected during the experiment. The dependent variable responds to the independent variable. It is called dependent because it "depends" on the independent variable. In a scientific experiment, you cannot have a dependent variable without an independent variable.
What is a conclusion? Reach a Conclusion. Did your experiment prove your hypothesis or disprove it? End result from your experiment…what is your experiment telling you?
How many variables should an experiment measure? Only one! A reliable experiment will only measure 1 variable.
A scientist wants to test the effects of soda on the growth of plants. The scientist keeps everything consistent in the experiment except to plant A. He adds 5 ml of Soda plus 5 ml of water each day to Plant A. He adds 5 ml of water to Plant B. Each day, the scientist measures the height of each plant and then records his observations. 1. In the above experiment what variable is being tested? Is this the Dependent or the Independent variable? 2. In the above experiment, what is controlled? 3. Is this the Dependent or Independent variable? (could have temperature, sunlight, etc.)
A scientist wants to test the effects of soda on the growth of plants. The scientist keeps everything consistent in the experiment except to plant A. He adds 5 ml of Soda plus 5 ml of water each day to Plant A. He adds 5 ml of water to Plant B.
Each day, the scientist measures the height of each plant and then records his observations.
In the above experiment what variable is being tested? Soda Is this the Dependent or the Independent variable? Dependent
In the above experiment, what is controlled? Water Is this the Dependent or Independent variable? Independent
Sources BELOW IS A VIDEO DEMONSTRATION ON THE DIFFERENCE BETWEEN THE INDEPENDENT AND DEPENDENT VARIABLES: HTTP://WWW.SOPHIA.ORG/TUTORIALS/INDEPENDENTDEPENDENT-VARIABLES--2 HERE IS A VIDEO THAT EXPLAINS A CONTROL GROUP HTTP://EDUCATION-PORTAL.COM/ACADEMY/LESSON/WHAT-IS-A-CONTROL-GROUP-DEFINITION-AND-USE-IN-RESEARCH.HTML#LESSON HTTP://WWW.SCIENCEBUDDIES.ORG/SCIENCE-FAIR-PROJECTS/PROJECT_HYPOTHESIS.SHTML BING ONLINE IMAGES
What is the Scientific Method? The scientific method is a process for experimentation that is used to explore observations and answer questions.
Scientific method topic review questions for students and educators, from the Virtual Cell Biology Classroom.
Review of Scientific Instruments is committed to excellence in publication of scientific measurements by concentrating on the theory and advancement of ...
When applying the scientific method to scientific research, ... Each element of the scientific method is subject to peer review for possible mistakes.
Introduction to the Scientific Method. The scientific method is the process by which scientists, collectively and over time, endeavor to construct an ...
... Scientific Method. Tools. Copy this to my account; E-mail to a friend; Find other activities; Start over; Help; Explore some of the main terms and ...
Scientific Method. Steps of the Scientific Method (6th Grade) Tools. Copy this to my account; E-mail to a friend; Find other activities
The first step of the scientific method is to define or identify the ? . ... Scientific Method Review Name _____ Use the clues to help you fill in the ...
The Scientific Method aims to discover new knowledge. Simplified it consists in formulating questions, collecting data and testing hypotheses.
Scientific Journals are multidimensional Open Access gateways for the exploration of scientific discoveries and new research in the medical and other ...