can you say 40' in celsius twice as heat why is zero temperature a relative scale why is it important to use an interval scale what temperature is double the temp of the earth does zero temperature means zero heat can you find zero value on the interval scale what temp can you find zero on a scale why is zero a useful interval scale for temperature how can i use interval vs temperature what is zero temperature why is the interval scale used when multiplication what is no zero? why is no zero on intervals why isn't multiplication allowed on intervals why is zero a measure of temperature why is there no zero value on the interval scale what is zero on the interval scale why is no zero on temp why is zero on interval scales what is zero temperature mean