The particles in matter are always moving. The more energy they have, the faster they move.  Having read the above passage, choose the right answer to the following question (choices are slower or faster ):   When a child has a lot of energy they will move around slower or faster?
faster

For a given medium such as air, sound has a slower speed at lower temperatures.  Having read the above passage, choose the right answer to the following question (choices are colder or warmer ):   Mike wants his voice to travel slowly, so he will speak in a room that is colder or warmer?
colder

Lower rock layers were laid down earlier, so they are assumed to contain older fossils.  Having read the above passage, choose the right answer to the following question (choices are first or last ):   Gerald laid down many rock layers. The layers on the bottom level were likely laid first or last?
first