Question

a temperature anomaly is the difference between the observed temperature and the long - term average temperature for each lo
true
false
why do scientists report average global temperatures in temperature anomalies rather than absolute temperature?
because warming has been uniform across the planet.
because warming has not been uniform across the planet.
because their goal is to track temperature changes.
because their goal is to track exact temperatures.
the overall trend in global average temperatures is the global average temperature is
increasing.
decreasing.
staying the same.
increasing and decreasing at a constant rate.

Explanation:

First Question (True/False)

A temperature anomaly is defined as the difference between the observed temperature and the long - term average (baseline) temperature for a location. So the statement is correct.

• Option 1: Warming is not uniform across the planet, so this is wrong.
• Option 2: Warming is not uniform, but this is not the main reason for using anomalies. The main reason is to track changes.
• Option 3: Scientists use temperature anomalies to track how temperatures change over time, as absolute temperatures have large spatial variations (e.g., polar vs tropical) which make it hard to see the overall trend. This option is correct.
• Option 4: The goal is not to track exact temperatures (absolute temps vary greatly by location), but to track changes. So this is wrong.

Based on scientific research and data, the overall trend of global average temperatures is increasing due to factors like greenhouse gas emissions. The other options (decreasing, staying same, increasing and decreasing at constant rate) do not match the observed long - term trend.

Answer:

True

Second Question (Why scientists report in anomalies)