1. Student Pressure Pre-Lab Questionnaire Supporting Diagrams BU ITOP NS 542 Rhine 2/20/2011

2. 2. Student sitting at a desk

3. 6 & 7. Cubic foot of water vs. air  Water 62.4 lbs 62.4 lbs 7.48 gallons 7.48 gallons 28.3 kg 28.3 kg  Air ?

4. 8 – 10. Student sitting at a desk at the bottom of a 10 ft deep swimming pool (sharks & suits optional) 10 feet

5. 11. Thin, medium, and wide straws poked into water. Shade in (estimate) the final water level for each straw.

6. 12. Thin, medium, and wide straws poked into water. Pour water into each straw. Shade in (estimate) the final water level for each straw.

7. 13. Medium straw poked into water. You take a sip of water from the tub using the straw.

8. 14. What causes the wind to blow?

9. 15. Poke the medium straw halfway into the water. Put finger on top of straw, and lift it up. What happens and what causes it to happen? Draw a FBD for the water in the straw.

10. 16. Scuba diver is in a pool. Rank the pressure felt by the scuba diver from most to least (use, =). BACEDF

11. 17. Scuba diver is cave diving. Rank the pressure felt by the scuba diver from most to least (use, =). BACEDF

12. 18. Scuba diver in a U-shaped swimming pool. Rank the pressure felt by the scuba diver from most to least (use, =). BACFDGE

13. 19. Scuba diver in a J-shaped swimming pool (right side of pool sealed on top). Rank the pressure felt by the scuba diver from most to least (use, =). BCFDGEA Capped end. No water in this white area. IH

14. 20. Scuba diver in a J-shaped swimming pool (right side of pool sealed on top). What happens if you drill holes in the side at the locations shown? BCFDGEA Capped end. No water in this white area. IH A H G F E