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In the Greek Waiter's Tray Super Value Laboratory Kit for physical science and physics, demonstrate the properties of centripetal force. Confidently swing a filled "wine" glass in dizzying overhead circles.

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How do you make a waiter's tray that won't spill? Use centripetal force, of course! Students build “Greek waiter's” trays to examine the important concepts of centripetal force, friction and Newton's laws of motion. When they place a cup of water in the center of their tray, the student can walk effortlessly around the classroom without spilling a drop-even as they spin the tray in a circle over their heads! Observe the simulated gravitational effects of centripetal motion as the cup and water remain “normal” to the tray, even when the cup and water are upside-down. An excellent way to illustrate how gravity may be simulated in outer space during future space missions. Super Value Kit is complete for 10 student groups. All materials are reusable!

Correlation to Next Generation Science Standards (NGSS)

Science & Engineering Practices

Planning and carrying out investigations
Constructing explanations and designing solutions

Disciplinary Core Ideas

MS-PS2.A: Forces and Motion
HS-PS2.A: Forces and Motion

Crosscutting Concepts

Stability and change

Performance Expectations

MS-PS1-2: Analyze and interpret data on the properties of substances before and after the substances interact to determine if a chemical reaction has occurred.