Is Object A at 40 degrees Celsius twice as hot as Object B at 20 degrees Celsius?

A. Yes
B. No






Why do frozen water pipes burst?
Would a mercury thermometer break if it were cooled below the freezing point of mercury (-39 degrees C)?

A. Yes
B. No






Many kinds of automobiles have cast iron cylinders and aluminum pistons. What kind of problems might result if the engine got too hot?