Price: $5.99
Level: Suggested for Grades 5 - 7

Which is the Biggest Energy Loser - Salt Water or Fresh Water?
If you don’t like swimming in cold water, which would you choose? Now you’ll know! This experiment uses physical science to demonstrate a scientific principle.

Materials Needed:

• 1/2 cup of salt
• hot tap water
• 2 large soda bottles (must be the same size)
• 2 thermometers
• modeling clay
• watch
• paper and pencil