Activity 6: Can freshwater float on saltwater?

Find out if freshwater can float on saltwater.

You will need: two glasses of the same size, water, water colors blue and red food colors, salt, teaspoons.

That’s how it’s done:

  1. Fill two glasses with water.
  2. Add a little blue color to one glass and a little red to the other glass.
  3. Sprinkle 2 to 3 tablespoons of salt in the blue glass.
  4. Take a teaspoon and slowly add small drops of red water to the blue water.
  5. What happens and why?

Can freshwater float on saltwater?

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