Here is a science puzzle for you to solve that is a lot like the kind of research that I do. This is a real science puzzle that should take you between 20 and 60 minutes.
Suppose you have a planet made of lots of ice (there are real planets made mostly of ice!). "Lava" on this planet will be made of water that forms when the ice partly melts inside that planet and melted ice leaks up to the surface where it forms "water volcanos". Now, just for the fun of it, let's suppose that the ice inside the planet is salty ice. Will the lava that forms be less salty than the original ice, saltier, or will it be the same saltiness as the ice that partly melted?
Here are the things you can do to solve this puzzle. You
can do whichever of them you choose and in any order you choose. See if
you get the right answer and see how quickly you can figure it out.