Which is a question which science cannot answer? how does the moon affect tides on earth? how long does it take for the earth to rotate on its axis? when will the next earthquake happen? why do volcanoes erupt?

Till now we are able to find

a)  How does the moon affect tides on earth? : the answer is moon gravitational field

b) How long does it take for the earth to rotate on its axis? : we know the answer is 24 hours (a day)

c) Why do volcanoes erupt? : due to divergence / convergence of tectonic plates

However we still cannot predict "When will the next earthquake happen?" based on science

the answer is na (sodium)

wher is the rest of the question