( Please identify the hypothesis for this experiment, dependent variable, and in
ID: 140400 • Letter: #
Question
( Please identify the hypothesis for this experiment, dependent variable, and independent variable from this conversation )
KRULWICH: They call this the pedometer theory. Now, to find out if there are actually pedometers inside ants' brains, scientists came up with an ingenious experiment that should let us see - and I mean literally see - those pedometers at work if they exist. So they led a bunch of ants across a bit of Sahara desert to some food. And while the ants were eating, the scientists trapped them into three separate groups. Now, for the first group, they took out an adhesive.
Prof. GOULD: They're using superglue.
KRULWICH: Yeah, he said superglue. Here are the instructions.
Prof. GOULD: Glue a little pig bristle on to make them twice as tall so their steps take them twice as far.
KRULWICH: Meaning they attach stiff pig hairs, or pig bristles, to each and every leg of each ant, turning this first group of ants into kind of Monty Python sort of critters, with ridiculously large steps. By the way, what lucky person gets to put six pig bristles on six legs?
Prof. GOULD: Some Swiss graduate student.
KRULWICH: Ok. So that's group number one. For the second group, what do you do?
Prof. GOULD: You trim their legs.
KRULWICH: You what?
Prof. GOULD: Just cut them off at the knees. It's very quick. And you'd be surprised how amenable insects are to having things like this done to them.
KRULWICH: Oh, come on. Like you want to be snipped. The point is, with their legs suddenly smaller every step the ants take becomes shorter.
Prof. GOULD: They're taking little baby steps, maybe only half as far.
KRULWICH: And the third group you just kind of leave alone?
Prof. GOULD: You leave them alone.
KRULWICH: Ok. Now, comes the fun part. When everybody was ready and it was time for the ants to go home they were released and, says Professor Gould
Prof. GOULD: These animals are ruled(ph) exactly the way you would expect it. They were counting steps.
KRULWICH: The stilty ants, they took big steps home and they stopped well past the nest. The stumpy ants took little itty-bitty steps home and they ended up shy of the nest. And the regular ants took regular steps home and they ended up right at the nest. But they all took the same number of steps.
So can we say that all these ants, they all counted?
Prof. GOULD: Yes.
Explanation / Answer
Hypothesis means::a supposition or proposed explanation made on the basis of limited evidence as a starting point for further investigation.(according to the meaning of hypothesis "KRULWICH" is an hypothesis for this experiment because he proposed explanation made on the basis of limited evidence.."KRULWICH" is independent variable and "Prof.GOULD"is dependent variable from this conservation.
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