In this task, you are given a question and answer for that. The answer will fill in the blank or will complete the unfinished question. Your task is to provide an explanation based on the given question or fill-in-the-blank statement, and answer.

[EX Q]: Question: Katie is looking at particles of reactants, and is noting that they currently are moving very slowly, and that they seem to have a little energy. These particles are likely at a temperature that is 
 Answer: lower
[EX A]: At higher temperatures, particles of reactants have more energy, so they move faster. They are more likely to bump into one another and to collide with greater force.

[EX Q]: Question: What happens when we get closer to the sun? 
 Answer: heat up
[EX A]: The stratosphere gets most of its heat from the Sun. Therefore, its warmer closer to the Sun.

[EX Q]: Question: If Jim wants to increase the amount of acceleration applied to a baseball he must hit it 
 Answer: harder
[EX A]:
The harder the batter hits the ball, the greater will be its acceleration.