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Scientific Method Variables

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good morning mr. Cody what are you doing mind if I help of course you can Jacob  over here I'll show you what I'm doing look up here on the windowsill I have two plants both the plants are in pretty much the same location and get the same amount of sunlight this first plant however I water every this plant however I only water every other day so Jacob in this experiment what do you think it is I'm testing the same type of plant and in the same location are you testing how well they grow depending on how much water they get that's absolutely correct Jacob I'm measuring how much the plants grow based on how much water they get bring up in fun somewhere in somewhere else and maybe maybe have different amounts of soil we can also change what we music we play for them easy easy calm down Jacob that actually wouldn't work in this experiment let's talk about why  if we set up the experiment one of the ways you suggested by putting the two plants in different locations this first plant would receive more water but less sunlight II plant would get less water but more sun so do you see the problem yet Jacob I think I do funny things at the end of experiment I couldn't say that it was the water or the sunlight that made a girl more cuz I changed you much for an experiment to be fair you can only change one thing at a time everything else and experiment should stay the same in your experiment the thing what you change is called the independent variable  in order for a test to be fair you must always only have one in the variable remember that's the thing that you're going to change in our case it was the amount of water that the plants received now what I think I can't it all of those things I talked about like changing where they were and the music that they were listening to if I selected just one of those they all chemical experiments but I can only select one right you are Jacob is there a name for  what do you mean J you know like all of the stuff that we could have changed but we didn't like keeping the plants in the same location or letting them have a Ramada flight you can the same kind of plants and yes they do actually have a name they're called variables or sometimes just the control the control or the controlled variables of the things that stay the same in the experiment the point of a control is to keep an experiment fair by keeping everything the same and changing just one thing we can say that one thing did or didn't have an effect on what we were testing help when it comes to scientific experiments and variables there's just one more part the left look at that after spring break Counting hey there mr. monster thanks for taking care of my science experiment during spring break I didn't mean you missed your monster I was talking about my plants new starter talking about me you know I would never talk about you like that so when you water them you water the left one everyday and the right one every other like I asked great thanks buddy good morning mr. Conan morning mr. monster Ford cars well would you look at that I got more Waters bigger wake up tell me that the one thing you did change which is our independent variable and this case the water did have an effect on the plan something else how much sunlight each plant received they made one plant grow bigger than the other one  everything Save-A-Lot of light same place same temperature even by keeping all the other variables are same I can pretty positively say that my watering one of the plants more and this case actually cause it to grow I would have to agree with you there Jacob and all those variables that you kept the same to keep the experiment Fair what are those called Remember control what is there one last thing you wanted to tell me about that's right Jacob and the other thing is called dependent variable before you tell me the address I can let me see if I can figure out what the dependent variable is by myself so I know what depended means it means to depend on something how I depend on my parents to give me a place to live keep going I got something else like an artist how tall the plant got depending on how much water you gave it an easier way to think about it is like this in an experiment the dependent variable is what you're trying to measure in our experiment we were trying to measure how big what plants got we found out the how big a plant got depended on how much water you gave it so the thing that we changed was how water so that's our independent variable the thing that we measured was how big it got so that's our dependent variable I do an experiment the thing that I'm a measuring if my dependent variable the thing that I change and test is my independent variable everything else should stay the same those are my control that's right Jacob so for your next experiment all you have to remember is that you need one independent variable and that's the thing that you change one dependent variable and again that's the thing that you're trying to measure and finally keep everything else the same you should have a fair test Porter

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Scientific Method Variables

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