Surface tension

What is surface tension?

• The force that attracts molecules towards each other

• The force that repels molecules away from each other

• The force that acts along the surface of a liquid

• The force that acts perpendicular to the surface of a liquid

Which of the following is an example of surface tension?

• A stone sinking in water

• A leaf floating on water

• A needle floating on water

• A drop of water falling from a height

What is the cause of surface tension in liquids?

• Cohesion between molecules

• Adhesion between molecules

• Gravitation

• Friction

Why do some insects walk on water?

• Because of their weight

• Because of their size

• Because of surface tension

• Because of buoyancy

A paper clip is able to float on the surface of water because of:

• Buoyancy

• Surface tension

• Gravity

• Friction