You need a control for any experiment. It doesn't sound like this particular experiment is of the utmost importance but it's a good habit to get into if you plan more important ones. I have no idea what the control would be.
It is the specific place where your research experiment will be conducted.
replication
The hypothesis is your guess of what will happen with the experiment before you do it. Observation is watching the experiment as it is being performed and observing what is taking place.
Experimental control is a group of experimental subjects that is not exposed to a chemical or treatment being investigated so that it can be compared with experimental groups that are exposed to the chemical or treatment It is also the standard of comparison. -Also, look for the following things: Experimenter Bias, History, Maturation, Instrumentation, Selection, Order, and Statistical regression. All of these should be questioned.
Place the object to be tested in the liquid you are interested in and see if it floats or not.
Sokatra
Philliphines is certainly not
the dirtiest place on earth is linfen china
the drinking fountain................... not the toilet
Yes- a sewer is possibly the dirtiest place there is.
The dirtiest place in the world in regards to air quality is Pakistan and China. The air is so saturated with pollution that soot covers most buildings and high rise structures.
by what do you mean dirtiest bc there are lots of places that are very dirty but others where it is the trashiest place ever
The control in a science experiment is the same thing as a constant. It is something that you keep the same the entire experiment. For example if you were testing how various locations affect temperature your constants would be the thermometer you used and the time for measuring the temperature. If you don't have a constant than your experiment results won't be accurate.
Money? Well, money is all over the place and everyone puts their ewey germs on it, so yes. Besides s@$!, money is probably the dirtiest thing in the world.
Just talk about the dirtiest place near where you live. Write it down.
some of the dirtiest cities are right here in india
While conducting an experiment, it is important to have a experimental control. Suppose you are conducting an experiment to determine what factors affect the rate of evaporation of water. If you want to determine if presence of wind affects evaporation, you can take two containers of water and place one in a windy place and the other in a place with no wind. However all other factors should be identical like surface area of containers, surrounding temperature, liquid quantity and temperature etc. Hence, the need for a controlled experiment is to eliminate bias and to ensure that the data is valid.