Problem: Rob is an auto mechanic. He was checking the radiators of his car and truck. He put antifreeze into the car radiator, but didn't put any antifreeze into the truck radiator. He was wondering how the vehicles would fare in coming hot weather. Would the car's engine less likely or more likely be damaged than truck's engine?

A: less likely

Problem: Two sister villages, both situated near volcanoes, experience daily earthquakes. Green village started recording an increased size and number of earthquakes one day. Blue village didn't experience a change in the number of earthquakes. Which village started experiencing more ground shaking?

A: Green

Problem: As a part of his engineering job Keith is measuring the vapor pressure of two locomotives, engine A and engine B. Engine A has a high vapor pressure, but engine B has a low vapor pressure. He noticed that to increase the speed of the engines he needed to increase the vapor pressure. Would engine B's liquid have weaker or stronger intermolecular forces than engine A?

A: stronger

Problem: John is an automotive enthusiast. He was visiting the auto show in his city. Two cars caught his attention, car A and car B. Car A was newer and it had catalytic converter. On the contrary, car B was older and didn't have catalytic converter. But he found the design of older car more attractive. Would car A emit less or more carbon monoxide than car B?

A:
less