instruction:
Given a scientific passage and an answer, generate a question for the given answer.
question:
Passage: Air movement takes place in the troposphere. This is the lowest layer of the atmosphere. Air moves because of differences in heating. These differences create convection currents and winds ( Figure below ). Answer: troposphere
answer:
What is the lowest layer of the atmosphere called?

question:
Passage: Frozen precipitation may fall as snow, sleet, or freezing rain. Answer: snow, sleet, freezing rain
answer:
What three forms does frozen precipitation take?

question:
Passage: Measuring devices must be used correctly to get accurate measurements. Figure below shows the correct way to use a graduated cylinder to measure the volume of a liquid. Answer: graduated cylinder
answer:
In a science lab, what device would you use to measure the volume of a liquid?