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Which phenomenon explains why a straw can draw liquid upwards?

Practice Questions

Q1
Which phenomenon explains why a straw can draw liquid upwards?
  1. Capillary action
  2. Surface tension
  3. Viscosity
  4. Hydrostatic pressure

Questions & Step-by-Step Solutions

Which phenomenon explains why a straw can draw liquid upwards?
  • Step 1: Understand that a straw is a narrow tube.
  • Step 2: Know that liquids have molecules that stick together (cohesion).
  • Step 3: Realize that liquids also stick to other surfaces (adhesion).
  • Step 4: When you suck on a straw, you create lower pressure inside it.
  • Step 5: The higher pressure outside the straw pushes the liquid up into the straw.
  • Step 6: The liquid rises because of the combination of adhesion to the straw and cohesion among the liquid molecules.
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