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Scientific method task
Terms in this set (13)
Describe the independent variable in a experiment
The independent variable is the only variable that as scientists Changes or manipulates in an experiment
Describe dependent variable in an experiment
The dependent variable is the response variable it is measured as the scientists data
In an experiment what is the purpose of the control group?
A control group is NOT tested on it does not receive any changes from the independent variable it is simply used for comparison
Why is it necessary that only one variable be changed in an experiment and that all other variable remain constant?
If a scientist changes more then one variable at a time then Tyne scientists can't know for sure which variable is causing the ovbserved changes in the experiment
Every experiment should consist of two groups
Control group-not tested on
Experimental group-is tested on and receives changes from the independent variable
All scientists investigations being with:
Asking questions or observing a problem
Forming a hypothesis is an important step in the scientific method what is the purpose of the hypothesis in an experiment?
The hypothesis is a possible answer to a testable statement that will either be proved or disproved
A student is conducting an experiment to tested how temperature might affect the dissolving time of an alkaline seltzer tablet dissolving in water how might a hypothesis for this experiment be stated?
If the temperature of the water is increased then alka selter tablet may dissolve faster
Which one of the following steps would occur last?
C)publish the resu
The data collected during an experiment are of little use unless they are organized in what ways might data be logically organized?
Data can be organized into charts tables groups or maps
Why must an experiment be repeated many times?
The more data a scientists has the more reliable his/her conclusion will be this allows for valid results and conclusion
What is the independent variable?
What is the dependent variable?
Independent:temperature dependent:breathing rate of the fish
The variable that is the result of the independent variable is called the:
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