The reason they would is because it is a lot safer.
to observe a 1000year process in just one day
sometimes it is because you might not know what is going to happen.
They might just want to retest ,but there are other reasons not everyone could be sure of that.
Variables
This is called a hypothesis.
you might not get the experiment correct (:
to observe a 1000year process in just one day
He or she states the problemThe scientist forms a hypothesis, a possible solution to the problem. The simplest solution is often the best solution.Next, a scientist might want to perform a controlled experiment. A controlled experiment can give a scientist more information about his or hers hypothesis.Results are recorded and analyzed.Using the data the scientist can develop a conclusion.
controlled experiment and observations..i might be wrong
we don't have control over everything
kaka
sometimes it is because you might not know what is going to happen.
They might just want to retest ,but there are other reasons not everyone could be sure of that.
He or she states the problemThe scientist forms a hypothesis, a possible solution to the problem. The simplest solution is often the best solution.Next, a scientist might want to perform a controlled experiment. A controlled experiment can give a scientist more information about his or hers hypothesis.Results are recorded and analyzed.Using the data the scientist can develop a conclusion.
Variables
This is called a hypothesis.
Scientists repeat their experiments because to make sure that their results are correct.