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What does the term 'surface tension' refer to?

Practice Questions

Q1
What does the term 'surface tension' refer to?
  1. Force per unit area
  2. Energy required to increase surface area
  3. Weight of a fluid
  4. Density of a liquid

Questions & Step-by-Step Solutions

What does the term 'surface tension' refer to?
  • Step 1: Understand that liquids are made up of tiny particles called molecules.
  • Step 2: Know that these molecules are attracted to each other due to forces called intermolecular forces.
  • Step 3: Realize that at the surface of a liquid, molecules are pulled inward by other molecules, creating a 'skin' on the surface.
  • Step 4: Recognize that surface tension is the energy needed to stretch or increase the surface area of this liquid.
  • Step 5: Conclude that surface tension helps explain why some objects can float on water and why water forms droplets.
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