The freezer's temperature decreased by 30 degrees Celsius from its original temperature of 18 degrees Celsius to reach -12 degrees Celsius.
The temperature change in the freezer is calculated by finding the difference between the final temperature and the initial temperature.
In this case, the freezer started at 18 degrees Celsius and cooled down to -12 degrees Celsius.
To determine the difference, subtract the initial temperature from the final temperature:
-12 degrees Celsius (final temperature) - 18 degrees Celsius (initial temperature) = -30 degrees Celsius.
The negative sign indicates a decrease in temperature.
Therefore, the temperature of the freezer decreased by 30 degrees Celsius.
This temperature change represents the amount by which the freezer's internal temperature dropped during the cooling process.
It's crucial to note that the negative value signifies a colder temperature than the initial state.
The cooling process might be influenced by factors such as the freezer's capacity, insulation, and cooling mechanism.
Temperature changes is essential for various applications, including food preservation and scientific experiments where precise temperature control is crucial.
The freezer experienced a temperature decrease of 30 degrees Celsius, resulting in a colder temperature of -12 degrees Celsius from its initial state of 18 degrees Celsius.