Im not a great student at science so I will need some help.
I decided to do the experiment "To see if hot water will freeze faster than cold water"
My hypothesis was: Hypothesis: I believe that the cold water will freeze at a much more rapid rate then the cold water, due to the fact of the large temperature difference. This will happen due to the huge temperature difference and by the time the boiled water cools down, the cool water would have already frozen.
The independent variable is the temperature of the water at the beginning.
The dependent variable is time that the experiment takes for each of the different temperatures
The control was the cold water. This was used to ensure that there were 2 comparisons so that the results could be differentiated.
The results supported the hypothesis as the cold water froze faster than the hot water.
Conclusion: The cool water froze faster than the hot water. This is due to the fact that there is a huge temperature gap, thus resulting in the cool water being at a low temperature and freezing much faster. This was done over a 1hour period with observations every 20minutes.
Can anyone make sure this is correct, first person to do so will get 5 stars and best answer! But they have to put some effort!!
I decided to do the experiment "To see if hot water will freeze faster than cold water"
My hypothesis was: Hypothesis: I believe that the cold water will freeze at a much more rapid rate then the cold water, due to the fact of the large temperature difference. This will happen due to the huge temperature difference and by the time the boiled water cools down, the cool water would have already frozen.
The independent variable is the temperature of the water at the beginning.
The dependent variable is time that the experiment takes for each of the different temperatures
The control was the cold water. This was used to ensure that there were 2 comparisons so that the results could be differentiated.
The results supported the hypothesis as the cold water froze faster than the hot water.
Conclusion: The cool water froze faster than the hot water. This is due to the fact that there is a huge temperature gap, thus resulting in the cool water being at a low temperature and freezing much faster. This was done over a 1hour period with observations every 20minutes.
Can anyone make sure this is correct, first person to do so will get 5 stars and best answer! But they have to put some effort!!
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I agree with your conclusion. Cold water will freeze in less time than hot water. Clearly, there is more heat to remove. There is a lot of confusion about this, including water that has been boiled. For a future experiment, you may want to compare boiled water with water that has not been boiled, where both are at the same initial temperature. The idea is that the boiled water will have most of the dissolved gases removed since the solubility of gases decreases with increasing temperature, and without the dissolved gases, the boiled water will freeze is less time.
Much of what is taught about the "scientific method" is fertilizer. (Take a look at http://amasci.com/miscon/myths10.html) The scientific method as presented in the first chapters of most science textbooks is a myth. It was concocted by a committee in the early 20th century.
You may also want to incorporate this little tweak. It has to do with the notion of a hypothesis. What you really have is a prediction, as in, "I predict that cold water will freeze at a more rapid rate..." The issue is this, somewhere, sometime, someone came up with the notion that a hypothesis is "an educated guess". That is a bigger load of fertilizer. A guess is at best a prediction, and that is not what a hypothesis is. A hypothesis is defined as a "tentative explanation". And the idea of an experiment is to test the tentative explanation. This means that you first have to have an observation, and then come up with a hypothesis to explain it.
Bottom line: A hypothesis is a tentative explanation and not a prediction.
Much of what is taught about the "scientific method" is fertilizer. (Take a look at http://amasci.com/miscon/myths10.html) The scientific method as presented in the first chapters of most science textbooks is a myth. It was concocted by a committee in the early 20th century.
You may also want to incorporate this little tweak. It has to do with the notion of a hypothesis. What you really have is a prediction, as in, "I predict that cold water will freeze at a more rapid rate..." The issue is this, somewhere, sometime, someone came up with the notion that a hypothesis is "an educated guess". That is a bigger load of fertilizer. A guess is at best a prediction, and that is not what a hypothesis is. A hypothesis is defined as a "tentative explanation". And the idea of an experiment is to test the tentative explanation. This means that you first have to have an observation, and then come up with a hypothesis to explain it.
Bottom line: A hypothesis is a tentative explanation and not a prediction.