why are controlled experiments sometimes impossible?
When there are too many factors to account for or it would be too complex to do so then a controlled experiment would either be impossible or impractical. For example, Jane Goodall studied chimpanzees but she couldn't do so under controlled circumstances. Besides being dangerous, costly, and extraordinarily difficult to do, taking the chimps out of their natural habitat in order to put them under controlled circumstances would actually alter their behavior so that she wouldn't be gathering the information that she wanted about how they go about their normal day to day lives. Instead of controlled experiments, she studied them through observation.
some of testing on human due to unethical reasons...
the reason it is important to controll the variables in an experiment is because if the variables are not controlled in an experiment it will be impossible to reproduce the experiment. which also will make it impossible to prove the theory being tested
The hypothesis states what question you are studying. If there is no hypothesis, one wouldn't know what one is studying, so it's impossible to construct a controlled experiment.
sometimes it is because you might not know what is going to happen.
experiment
Scientist use models
we don't have control over everything
the reason it is important to controll the variables in an experiment is because if the variables are not controlled in an experiment it will be impossible to reproduce the experiment. which also will make it impossible to prove the theory being tested
The hypothesis states what question you are studying. If there is no hypothesis, one wouldn't know what one is studying, so it's impossible to construct a controlled experiment.
sometimes it is because you might not know what is going to happen.
controlled experiment
experiment
the answer is a experiment that is controlled
Scientist use models
Scientist use models
It is called a controlled experiment.
A controlled experiment is better than a none controlled experiment because you can control one of them and the other you can't. Science is a really fun subject.
An investigation in science that is controlled is an experiment. The group within the experiment that is controlled is the control group.