For example: Assuming you are female, 5' 5, 170lbs at the start of August and would like to be 150lbs by Christmas, you would specify that you want to lose 20lbs in 5 months. The calculator will then give you your calories required on a week-to-week basis to reach your goal weight. This is how it differs to other calorie calculators which only allow you to calculate the amount of calories daily for a specific weight. Calories Required To Lose Weight.
In general, the liquids tend to expand when their temperature increases. For example, the same mass of boiling water occupies more volume at 100 degrees Celsius than at 20 degrees Celsius. Therefore, increasing temperature decreases density.
Good question and the answer lies in a very peculiar property of water. As you guessed, the density of water of water increases as the temperature is lowered, but below 4 o C this trend is reversed. Here is a graph from. It shows the density of liquid water vs. temperature.