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Frozen Bubbles
Conditional Remix & Share Permitted
CC BY-SA
Frozen Bubbles
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Fluids flow from hot to cold at an interface such as the surface of the bubble. As the bubbles begin to freeze, the still-liquid part of the bubble keeps moving, ripping ice crystals off the growing freeze front and tossing them around. Those ice crystals each create their own freeze front, making the bubble’s surface solidify faster.

Subject:
Atmospheric Science
Physical Science
Material Type:
Activity/Lab
Author:
STEM Bites are a project of the Oregon STEM Hub network. This lesson contributed by GO-STEM and Columbia Gorge STEM Hub.
Date Added:
03/31/2021
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Parachute Design 3-4
Conditional Remix & Share Permitted
CC BY-SA
Parachute Design 3-4
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Parachutes slow down the fall of an object by creating more air resistance for the falling object. All objects fall at the same speed, regardless of their mass. But, more air resistance can slow them down. So, as a parachute is made larger, it will have more air resistance and slow down the object more.

Subject:
Physical Science
Material Type:
Activity/Lab
Author:
and originally created by Hood River County 4-H. See original file here. Adapted for this use by Columbia Gorge STEM Hub and GO-STEM.
STEM Bites are a project of the Oregon STEM Hub network. This lesson contributed by Oregon 4H
Date Added:
04/01/2021
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