Fight with Soap
The control
The dish with no soap added
An object that is denser than water can float on water because of this.
Surface tension
The group that gets a bar that LOOKS like the energy bar, but it is really just squished bread with dye and flavoring.
The control group.
experiments in which the participants do not know whether or not they are part of the control group.
blind experiments
The soap used in the dish is what we wish to learn about it. This is what we call it.
The experimental variable
This may happen to an object if soap is added to the water it is floating on.
It will sink
The group that gets the energy bar.
The experimental group.
experiments in which neither the participants nor those analyzing the data know whether or not they are part of the control group.
double-blind experiment
Name one variable that should be reduced or eliminated.
five dishes should be identical, amount of soap should be the same, amount of swirling should be the same, examined the same way, all dishes should be stored in the same place during the 5 minute wait.
When an egg sinks in salty water, it is _____ dense than the water.
more
This experiment should be this kind of experiment.
double-blind
The aspect of the experiment that changes during the experiment.
Experimental variable
Counting the bacteria is considered this kind of data.
objective
When an egg floats in salty water, it is _____ dense than the water.
less
The data collected in this experiment are __________.
subjective
The variable to which all others are compared.
The control
The study should be this kind of study (blind, double-blind, or neither).
Neither
The stronger the ________ _________, the more easily a highly dense object will float.
surface tension
questionnaire
The first step of the scientific method.
Observation