Each student needs a copy of the Air - Is It Really There? Worksheet

Demo 1 – Air Takes Up Space

• Part A: 1 paper lunch bag
• Part B: 1 balloon, and 1 empty one-liter plastic pop or juice bottle (it must have a narrow neck; remove the label)

Demo 2 – Air Has Mass

• 2 identical balloons
• 1 meter stick
• 1 straight pin

Demo 3 – Air Can Move (We Can Feel It)

• 1 electric fan (table or floor size)

Demo 4 – Air Exerts Pressure (It Pushes on Things)

• Part A - Student Activity: 1 sheet of 8.5" x 11" paper per student
• Part B - Student Activity: Each student needs 1 straw and 1 small cup containing water
• Part C: 1 medium sized jar with an opening smaller than an index card, 1 index card or piece of light-weight cardboard, 1 large bowl/dish in case of spills, paper towels or rags in case of spills
• Part D: 1 small juice glass, 1 tissue and 1 medium bowl filled with water

Demo 5 – Air Does Work

• 1 medium-sized plastic bag
• A stack of textbooks