What is the Scientific Method?. The scientific method is a way to ask and answer scientific questions by making observations and doing experiments.. The steps of the scientific method are to:. Ask a Question. ID: 753604
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Science Fair Project
What is expected?Slide2
What is the Scientific Method?
The scientific method is a way to ask and answer scientific questions by making observations and doing experiments.
The steps of the scientific method are to:
Ask a Question
Do Background Research
Construct a Hypothesis
Test Your Hypothesis by Doing an Experiment
Analyze Your Data and Draw a Conclusion
Communicate Your Results
It is important for your experiment to be a fair test. A "fair test" occurs when you change only one factor (variable) and keep all other conditions the same.Slide3
What is the Scientific Method?Slide4
How do I create a S
Begin by thinking about a question that interests you. It should be something that can be tested and and analyzed.
For example: Which batteries last the longest?
To do an experiment on this question you would need the correct materials to test it and you would need to follow specific steps that can be repeated by anyone.
You would also need a data collection method and a way of interpreting the data.Slide5
Before beginning I must state the reason why I am conducting my experiment.
I can do this in my
Introduction or Purpose
We observed that Duracell batteries seem to last longer than other batteries.
Do Duracell batteries last long longer than other popular brands of batteries
To determine if Duracell batteries last longer than Energizer, Eveready and
Next I must form a
. It may or may not prove to be correct but it essential to include before testing to follow the process correctly:
We believe that Duracell will be the longest lasting battery because they seem to last very long and they state in their advertising that “no other battery beats the copper top.”Slide7
Now that we have a hypothesis we need to explain exactly what we need in order to test it. These are our
One standard flashlight that can be repeatedly used
Two D-size batteries from each of the following
other D-size batteries to test each flashlight and bulb before starting
stopwatch to get the exact time each battery lasts.Slide8
We now know what we need for the experiment so we must identify the
Variables and control
The battery type that was used (Duracell, Energizer,
The length of time the flashlight continued to work
The same flashlight was used in the same location for all
*An independent variable is something that will change (the type of battery used) A dependent variable is something that changes only because of the independent variable (the amount of time the flashlight lasts).Slide9
After we have decided what we think will happen in the experiment and the materials we need we must decide the steps we will take to test our hypothesis. This is called the
. Place two D sized Duracell batteries into the flashlight.
. Turn on the flashlight and the timer at the same time.
. Leave the flashlight running for 8 hours and then monitor the remaining
until it stops.
. Record the amount time elapsed before the batteries die.Slide10
Now we must collect and display the data. This is called
Data and Graphics
Next we must summarize our
in written form:
Our experiment showed that Energizer outlasted all of the other batteries we tested by more than four hours. The Eveready battery, which is a regular, non-alkaline battery, lasted only 6 hours and 35 minutes. The Duracell lasted 17 hours and 28 minutes. The
lasted 13 hours and 12 minutes. The Energizer lasted 21 hours and 17 minutes
*The Eveready flashlight went out during the night, so we had to replace the batteries and watch it during the daytime. It was the only non-alkaline battery. We observed that when it was going dead, it got very dim. The alkaline batteries just went out completely.Slide13
Now we must analyze the results and determine if our hypothesis is valid. This is called the
The data we collected refuted our hypothesis. We came to this conclusion because our data showed that Energizer batteries lasted longer than Duracell, Eveready, and
. This also proves that even though batteries may be more expensive (like the Duracell was), you might not be paying for a better battery.Slide14
Finally it is time to reflect on our project and suggest ways it could be improved (every experiment can be improved or done differently). This is called the
We recommend that further testing be done, due to a few errors made during the experiment. The flashlight was accidentally dropped twice, which could have caused differences in the results. Also, the expiration dates of the batteries were not all the same (there was a difference of up to 5 years); so some batteries may not have been as "fresh" as the newer ones. Finally, the experiment should be repeated using other devices (example: toys) as they may give different results than the flashlight.Slide15
How should my project look?
Your project must follow the scientific process and this must be reflected in your display. However, the way you arrange your display and the artistry involved is up to you. You can earn extra marks by having a visually stunning display.
Here is an example of a common board layout:Slide16
In addition to the experiment and display you should be able to explain verbally what you have done and why. You should also be able to answer any questions others may have.
Above all else make sure you have fun! This fair is a great opportunity for you to learn about science in an interesting and engaging way. You are all creative and capable individuals and it is time to let your creativity and imagination loose!
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