Each group needs:

• 2-liter plastic soda bottle (ask students to bring from home)
• (optional) Bottle Template and Rulers; prepare bottle by printing and cutting out this template for drilling bottle holes
• ruler or tape measure (or make rulers by printing Bottle Template and Rulers on paper or overhead transparency sheets and cutting into strips)
• 2 strips of duct tape for covering holes
• drill with ~1/8-in bit (have students mark hole and teacher drill, or drill bottle holes before activity), or a sharp-pointed object to punch 1/8-in holes
• water from a faucet or large container
• sink or basin to catch water (unnecessary if working outside)
• stopwatch (or wall clock with second hand)
• Pascal's Law Worksheet
• calculator