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Scuba divers can breathe under water

 

Image: PADI

The La Jolla coast is a popular scuba diving destination. How can a scuba tank carry enough air for a diver for such a long period of time? What are the properties of the air in the tank? 

Resources:

Carolina: Scuba Diving and Gas Laws

NGSS & Grade:

MS-PS1-4, PS1.A: Structure and Properties of Matter

Grade: 
6-8 MS
Discipline: 
Physical Science