Q: More recently, the death rate has fallen because of the availability of more food and medical advances.  When people forgot how to farm the population decreased or increased?
A: decreased


Q: When a volume of water is cooled, the molecules move less vigorously, so same number of molecules takes up less space and the water is denser.  Jim puts his water in the oven for later. The molecules in the liquid speed up or slow down?
A: speed up


Q: If salt is added to a volume of water, there are more molecules in the same volume, so the water is denser.  If Milo wants to make his water saltier and begins adding salt to the glass, what happens to the density of the glass of water decreases or increases?
A: increases


Q: The stronger the winds are blowing, the larger the waves are and the more energy they have.  Waves can be made by wind, on a windy day would we expect to have larger waves or smaller waves?
A: larger waves