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Which phenomenon explains why a straw can draw liquid upwards?
Which phenomenon explains why a straw can draw liquid upwards?
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Practice Questions
1 question
Q1
Which phenomenon explains why a straw can draw liquid upwards?
Capillary action
Surface tension
Viscosity
Hydrostatic pressure
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Capillary action allows liquids to rise in narrow spaces, such as a straw, due to adhesive and cohesive forces.
Questions & Step-by-step Solutions
1 item
Q
Q: Which phenomenon explains why a straw can draw liquid upwards?
Solution:
Capillary action allows liquids to rise in narrow spaces, such as a straw, due to adhesive and cohesive forces.
Steps: 6
Show Steps
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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