instruction:
Given scientific fact as input, generate the question from this fact such that it can be answered from the input.
question:
In science, something that always applies under the same conditions is called a scientific law.
answer:
In science, what do you call something that always applies under the same conditions?

question:
When magma heats groundwater, it may come to the surface as a hot spring or a geyser.
answer:
When magma heats groundwater, it may come to the surface as a hot spring or a what?

question:
The product of a wave's wavelength and its frequency is its speed.
answer:
The product of a wave's wavelength and its frequency is what?