Pour water into the beaker so that the candle appears submerged. Blow out the candle and explain the actual arrangement of the objects in the demonstration. Explain the illusion is sometimes used in ...

Looking at the readings on the beaker, with the mass in the boat the water is at 670 milliliters (which is 670 cm 3). When the mass is put in the water, it drops to 560 mL for a change of 110 mL.

Most of the water on Earth is salty ocean water—not suitable for drinking. While desalination plants can remove the salt and make seawater drinkable, they use a lot of energy and expensive equipment.