A higher-frequency wave has more energy than a lower-frequency wave with the same amplitude.  A sound wave that has more frequency will have more or less energy?
more

Warm air is less dense than cool air, so it rises higher in the troposphere.  If Mona cools down the air she is putting into her weather balloon, what will happen to the height that it can rise into the troposphere increase or decrease?
decrease

An object has greater momentum if it has greater mass, greater velocity, or both.  An object with a lesser mass than another will have less or more momentum?
less

Nations that have more industry produce more hazardous waste.  A small nation decided to ramp up its production capabilities and built several large factories. Would the river next to the factories have more hazardous waste or less hazardous waste??
more hazardous waste