Tamara Helfer 2012 Sequoia Science ExplorationsWhat is a variableA variable is something that can CHANGETestable Questions have two partsAn independent variableA dependent variableWhat is anIndependen ID: 896419
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1 Variables Tamara Helfer, 2012 Sequoia
Variables Tamara Helfer, 2012 Sequoia Science Explorations What is a variable ? A variable is something that can CHANGE . Testable Questions have two par
2 ts: ⢠An independent variable â
ts: ⢠An independent variable ⢠A dependent variable What is an Independent Variable? ⢠The variable that will be changed by you â the s
3 cientist . ⢠A good experiment has
cientist . ⢠A good experiment has only one independent variable ! ⢠The x - axis What is a Dependent Variable? ⢠The variable that is b
4 eing measured in your experiment â
eing measured in your experiment ⢠The response to the change you make using the independent variable. ⢠The Y - axis What are control groups ?
5 ⢠Comparison group which is not manip
⢠Comparison group which is not manipulated at all ⢠Placebo What are constant variables ? ⢠Variables that are kept the same for all experimenta
6 l groups Testable Question Formats
l groups Testable Question Formats ⢠Does changing _______ affect _______? ⢠How does changing _____ affect _____? ⢠If I change ______ will
7 it affect ______? independent vari
it affect ______? independent variable independent variable independent variable dependent variable dependent variable dependent variable
8 ____________ depends on _____________
____________ depends on _______________ A Testable Question ⢠Does changing the amount of light affect the growth rate of plants? Identify the INDEPEND
9 ENT variable Identify the DEPENDENT
ENT variable Identify the DEPENDENT variable Another Testable Question ⢠Does the temperature of water affect the time it takes a sugar cube to disso
10 lve? Identify the INDEPENDENT variable
lve? Identify the INDEPENDENT variable Identify the DEPENDENT variable Another Testable Question ⢠Farmer Amos wants to test a new fertilizer for hi
11 s tomatoes to see if he can harvest mor
s tomatoes to see if he can harvest more fruit. Identify the INDEPENDENT variable Identify the DEPENDENT variable Identify the CONTROL group What are some