Lesson 25: Grasping For Air

DESCRIPTION
A trash can and a trash bag are used to explore the concepts of air pressure and vacuums.

OBJECTIVE
This lesson will demonstrate the formation and effects of a vacuum.

CONTENT TOPICS
Properties of matter; force (pressure)

Lesson 25: Grasping For Air

WATCH LESSON

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Lesson 25: Grasping For Air

LIST OF MATERIALS

Small plastic trash can
Clean plastic trash bag
Duct tape

REVIEW GAME

Lesson 25: Review Game

HYPOTHESIS

When air is removed from the space between a trash can and the trash bag inside it, a small vacuum will be created.
With the bag sealed inside the can, the vacuum will make it difficult to pull the bag from the can.

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