1.2 Experimental Desgin Flashcards
How many steps are there in writing a hypothesis?
2
What is the first step in writing a hypothesis?
Come up with a specific reason that explains the phenomena.
Give an example of the template that could be used for step 1?
The <phenomenon, topic> (is due to, is caused by, depends on) <specific>.</specific>
What is the second step in writing a hypothesis?
Write a testable statement.
Give an example of the template that could be used for step two?
If <independent> <increases/decreases>, then <dependent/responding variable> <increases/decreases>.</independent>
Why are control groups important? list multiple.
-1 control group and 1 or more experimental groups.
-different only by independent variables.
Why cant you have multiple independent variables? explain.
If you have multiple independent variables, you would not know the cause of the change in the dependent variable.
What is a control group?
Standard to which comparisons are made in an experiment.
What is an independent variable and what axis does it go on?
The variable that gets changed on an experiment. It goes on the x-axis.
What is a dependent variable and what axis does it go on?
The result of the change in the independent variable. It goes on the y-axis.
A science class is experimenting if the amount of sunlight affects plant growth.
What is the control group of this experiment and why?
The control group is the plants that did not receive sunlight because it will show the difference of the result compared to the ones who did received sunlight as the independent variable.
What is the difference between quantitative and qualitative data?
quantitative = measuring numerical number
qualitative = describing characteristic
how many milligrams are in 1 gram
1000
convert 1.7 grams to milligrams
1700
how many milliliters are in 1.7 liters
1700
