Given a fact, create a question that can be answered using the fact. Construct the question such that it is unambiguous, has a unique answer and the answer can be given using the fact.

Fact: melting point means temperature above which a solid melts
Glass can become a liquid if?

Fact: as distance to a city decreases , the amount of light pollution will increase
In the wilderness, light pollution is?

Fact: performing lab expiriments accurately requires understanding all directions beforehand

To get a lab experiment right you need to?