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.

Q: Question: Willard dug up a rock from near the surface, and realized it was _____. 
 Answer: young

A: Therefore, deeper rock layers must be older than layers closer to the surface.
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Q: Question: Alan saw Venus through his old telescope. He then looked through his bigger, better telescope. Venus likely appears brighter through the 
 Answer: bigger telescope

A: Larger telescopes can collect more light.
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Q: Question: As molecules start moving slower they get 
 Answer: colder

A:
Warmer molecules vibrate faster than cooler ones.
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