Exploring Surface Tension
This worksheet introduces grade 7 students to the concept of surface tension through various questions and activities.
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Exploring Surface Tension
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Read each question carefully and answer to the best of your ability. Show all your work for short answer questions.
1. What property of water allows a paper clip to float on its surface?
Adhesion
Cohesion
Surface Tension
Capillary Action
2. Which of the following would DECREASE the surface tension of water?
Adding salt
Heating the water
Cooling the water
Adding sugar
3. Surface tension is caused by the forces between water molecules.
4. Insects like water striders can walk on water due to .
5. Hot water has higher surface tension than cold water.
True
False
6. Detergents increase the surface tension of water.
True
False
7. Explain how surface tension allows a water droplet to form a spherical shape.
8. Describe a real-world example of surface tension in action, other than insects walking on water.
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