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.
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Question: Fact: as a source of light moves directly overhead of an object , the size of the shadow of that object will decrease

Answer: as a source of light moves directly overhead of an object , the size of the shadow of that object will do what?


Question: Fact: fossils are formed when layers of sediment cover the remains of organisms over time

Answer: If enough dirt is able to accumulate over a carcass, then eventually that carcass may?


Question: Fact: the stars in the night sky are very far away from the Earth

Answer:
The stars at night, though bright and glowing merrily, are?