If you could live on Mars for a year, what do you think would be your biggest challenge?
Why does sugar dissolve faster in hot tea than in iced tea?
What is a water filter?
Where does water come from?
Why can’t humans breathe underwater?
Why does water pass through a sieve?
What do you think would be most exciting about living underwater?
Why do we need water to survive?
Where does the salt go when salt water turns into water vapor?
Why does the water go down the plug hole in opposite directions at each end of the planet?