Q: More water allows more chemical reactions.  Timmy tested his chemicals by subtracting water and noticed more or less reactions?
A: less


Q: Better farming techniques and machines increased the food supply and the distribution of food.  Jeff noticed the food supply changed over time in his city. The advent of farming machines likely caused the food supply to decrease or increase?
A: increase


Q: If we have two materials with the same volume, the material with a higher mass will be more dense.  Tanya has a substance with mass 10kg. Logan has a substance with mass 5kg. If both substances are the same size, who has the denser substance Tanya or Logan?
A: Tanya


Q: The more energy the particles in matter have, the faster and more strongly they vibrate.  Chris sees a particle with great energy. Chris knows it has lots of energy because it vibrates weakly or powerfully?
A: powerfully