Flying Frisbee - Summary

SCIENCE CONCEPT:

Air flow over the surface area of a curved shape of a wing is a basic element to assist in the process of aerodynamics. The longer distance over the top of the frisbee causes air to flow faster over the topside. Faster moving air has a lower pressure. Thus, lift is produced from the higher pressure below the frisbee.

STUDENT OBJECTIVE:

The student will observe that the curved shape of a wing (as demonstrated through a frisbee flight) is a key element in creating "lift" of a flying object.

OVERVIEW:

In this activity, the student will be tossing a frisbee in two ways: as it should be tossed, with the curved shape on top and also, improperly tossed,with the underside of the frisbee facing up. They should be able to observe the frisbee gliding easily through the air when the curved shape is on top.

PREPARATION TIME:

5 minutes.

LESSON TIME:

30 minutes.

TEACHER PREP:

Gather a set of frisbees or ask students to bring frisbees from home.

WORDS TO KNOW:

curve

surface

lift

invert

wobble

sink

fling

TEACHER TEXT:

While insects are considered the most maneuverable of all flying creatures, birds are considered nature's perfect flying machines. Every part of a bird is adapted to flying. Their bodies are as streamlined as an airplane, enabling them to slip easily through the air. Their bones are strong yet lightweight, because they contain many air sacs. The chest muscle, which operates the wings, is extremely large and powerful. Their wings are covered in tightly fitting feathers that trap air.

The feathers have a stiff, straight part running through them called a shaft. On both sides of the shaft are vanes composed of barbs which are held together they barbules. The bird's wings, with each of its feathers are shaped much like an aircraft's wing--curved on top and flatter underneath. This allows both wings to achieve lift in the same way.

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Last modified: Sat Aug 23 14:04:12 PDT 1997