# The Scientific Method.

## Presentation on theme: "The Scientific Method."— Presentation transcript:

The Scientific Method

Initial Observation Notice a phenomenon in nature
If you already know the theory behind it, confirm it by doing an experiment (what you will do throughout high school) If you do not know the theory behind it, prove one by doing an experiment (think of Copernicus, Newton, Galileo, etc) Example: I get much hotter in the sun when I am wearing my black sweater versus my white one.

Question Ask a question about your observation that can be answered by doing an experiment. Ex: Which colored material will heat up the fastest when placed in the light, black or white?

Hypothesis Answer to your question with as much detail as possible Ex: The black material will heat up faster because it absorbs the light energy, whereas the white material reflects it. Variables Factors that you are controlling Ex: colour of clothing and time of exposure to light

Materials List the exact quantity and size of materials you will be using- be as specific as possible. Ex: A 10x10x0.25 cm piece of black cotton material A 10x10x0.25 cm piece of white cotton material 2 thermometers 1 stopwatch 2 desk lamps

Procedure Enumerate all the steps, as specifically as possible, that you will follow to complete your experiment. One action per step. You can even include a diagram of the setup, if desired. Ex: Place the 2 desk lamps on a table, 1 meter apart from one another. Put the piece of white material below one of the desk lamps and the black material below the other. Have one volunteer place the tip of the first thermometer on the center of the white material, without putting too much pressure that they touch the table.

Procedure- continued 4. Repeat step 3, but with the black material under the second desk lamp. 5. Measure the initial temperature of the 2 materials. 6. Turn on both desk lamps and start the stopwatch at the same time. 7. Measure the temperature of the 2 materials every minute until they are constant (about 10 – 20 minutes).

Results Present your qualitative and/or quantitative observations (worksheet) Qualitative (describe results using words) observations are either in point-form notes or in a table. Quantitative (describe results using numbers) observations are always in a table Remember to title your table

Heating up White vs. Black Materials
Results- Ex: Heating up White vs. Black Materials Time (minutes) Temperature of black material (°C) Temperature of white material (°C) 21 1 22 2 24 3 26 20.5 4 29 20 5 31 6 33 21.5 7 34 8 35 9 36 10