Mon Prof Augmenté
Salt from Seawater
Open to everyone until Thursday, October 1
To keep it, print it while it is open.
When seawater evaporates, the water rises into the air as vapour. The dissolved salt stays behind and forms white crystals that can be gathered.
In the picture
- Liquid seawater: water with dissolved salt in the basin
- Water vapour: water leaving the surface as an invisible gas
- Salt crystals: white grains forming along the basin rim
- Salt crystals: white grains settled on the basin floor
Examples
- Sea salt is made by letting shallow pools of seawater dry in the sun.
- A salty puddle on a pavement leaves a white salty ring after the water dries.
Key takeaways
- Evaporation removes water but leaves dissolved salt behind.
- The leftover salt can build up into solid crystals.
Carry on in the app
Three questions on this lesson, to check the idea stuck. Free in the app while the lesson is in the free week.
At least one new illustrated lesson every weekday for your child’s year, with its quiz and a reminder at 6:15 pm.
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