Final answer:
To find out how much warmer it was on Thursday compared to Wednesday, you subtract Wednesday's low of -11°C from Thursday's low of -2°C, resulting in a 9°C difference, indicating it was 9 degrees warmer on Thursday.
Step-by-step explanation:
The question is about comparing two temperatures measured in degrees Celsius on different days. To find how much warmer it was on Thursday compared to Wednesday, you need to subtract Wednesday's temperature from Thursday's temperature.
Here is the calculation: Temperature on Thursday (-2°C) - Temperature on Wednesday (-11°C) = 9°C.
Therefore, you can say that it was 9 degrees Celsius warmer on Thursday compared to Wednesday.
Understanding temperatures and how they vary can be related to different areas of science, such as climatology and environmental science. The lowest temperatures ever recorded in laboratory experiments, Earth's typical temperatures, and even weather patterns on Mars are examples of extremes and averages that can be compared using simple subtraction as shown above.