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12 de feb. de 2020 · By. Andrew Zimmerman Jones. Updated on February 12, 2020. Surface tension is a phenomenon in which the surface of a liquid, where the liquid is in contact with a gas, acts as a thin elastic sheet. This term is typically used only when the liquid surface is in contact with gas (such as the air).
- Andrew Zimmerman Jones
17 de abr. de 2019 · Magic milk experiment to demonstrate surface tension. Another surface tension experiment is where you make a shape on the surface of the water with cocktail sticks and drop some washing-up liquid in the centre to force the sticks apart. Watch how water behaves on the space station with this NASA video.
Teacher Version. In this lab you will learn about properties of liquids, specifically cohesion, adhesion, and surface tension. These principles will be demonstrated by adding drops of different liquids to pennies to determine the strength of molecular attraction. California Science Content Standards:
- 462KB
- 8
In this experiment, you will be making and using a single beam balance to measure the force exerted by surface tension on a needle, floating on the surface of the water. The needle will be attached to your balance, and you will measure how much force is required to pull the needle out of the water.
27 de feb. de 2020 · La tensión superficial es una propiedad física que presentan todos los líquidos y se caracteriza por la resistencia que sus superficies oponen a cualquier aumento de su área. Esto es lo mismo que decir que dicha superficie buscará la menor área posible.
This series of brief experiments on the surface tension of water, and the effects of detergents and soaps on this, can serve as an introduction to the phenomenon of surface tension, with a discussion of results leading into simple theory.
Summary. Key Concepts. Molecules, surface tension. Credits. Ben Finio, PhD, Science Buddies. Introduction. Have you ever noticed how, on a rainy day, water forms droplets on a window? Why does it do that instead of just spreading out evenly over the whole surface? And what could that possibly have to do with washing the dishes or doing laundry?
