Surface Tension Exploration
Explore the fascinating phenomenon of surface tension with this Grade 9 science worksheet, covering its definition, causes, and real-world examples.
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Surface Tension Exploration
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Read each question carefully and provide your best answer. Show all your work for calculations.
1. What is surface tension primarily caused by?
Gravitational forces
Cohesive forces between liquid molecules
External air pressure
Adhesive forces between liquid and container
2. Which of the following phenomena is a direct result of surface tension?
Boiling water
A boat floating on water
A water strider walking on water
Ice melting
1. Hot water generally has a higher surface tension than cold water.
True
False
2. Surfactants increase the surface tension of a liquid.
True
False
1. Surface tension causes liquid droplets to form a shape to minimize their surface area.
2. The inward pull of molecules at the surface of a liquid is due to forces.
1. Explain why a small needle can float on the surface of water despite being denser than water.
2. Describe one real-world application or example where surface tension plays a crucial role.