1 / 16

Scientific Method

Scientific Method. variables. variables. Independent Variable (what I want to change):. Dependent Variables (what I observe):. Controlled Variables/Control (what I keep the same):. Purpose/Question:. How much water flows through a faucet at different openings?.

marcus
Download Presentation

Scientific Method

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Scientific Method

  2. variables

  3. variables Independent Variable (what I want to change): Dependent Variables (what I observe): Controlled Variables/Control (what I keep the same):

  4. Purpose/Question: How much water flows through a faucet at different openings? Independent Variable (what I want to change): water faucet opening (closed, half open, fully open) Dependent Variables (what I observe): amount of water flowing measured in liters per minute

  5. Controlled Variables/Control (what I keep the same): • the faucet • water pressure, or how much the water is • "pushing" "Different water pressure might also cause different amounts of water to flow and different faucets may behave differently, so to insure a fair test I want to keep the water pressure and the faucet the same for each faucet opening that I test."

  6. Purpose/Question: Does heating a cup of water allow it to dissolve more sugar? Independent Variable (what I want to change): temperature of the water measured in degrees Centigrade Dependent Variables (what I observe): amount of sugar that dissolves completely measured in grams

  7. Controlled Variables/Control (what I keep the same): • stirring • type of sugar "More stirring might also increase the amount of sugar that dissolves and different sugars might dissolve in different amounts, so to insure a fair test I want to keep these variables the same for each cup of water."

  8. Purpose/Question: Does fertilizer make a plant grow bigger? Independent Variable (what I want to change): amount of fertilizer measured in grams Dependent Variables (what I observe): • growth of the plant measured by its height • growth of the plant measured by the number • of leaves

  9. Controlled Variables/Control (what I keep the same): • same type of fertilizer • same size pot for each plant • same type of plant in each pot • same type and amount of soil in each pot • same amount of water and light • make measurements of growth for each plant at • the same time "The many variables above can each change how fast a plant grows, so to insure a fair test of the fertilizer, each of them must be kept the same for every pot."

  10. Controlled Variables/Control Group: (what I keep the same) (what doesn’t change) Independent Variable (what I want to change) Dependent Variables (what I observe)

More Related