The surface tension in a cup of water is caused by ____.
attractive forces between the water and its container
attractive forces between water molecules
adhesive forces between water molecules
adhesive forces between the water and its container

Question

The surface tension in a cup of water is caused by ____.  
attractive forces between the water and its container
attractive forces between water molecules
adhesive forces between water molecules
adhesive forces between the water and its container

anonymous · Answer

The first one

mani_jha · Answer

adhesive forces between water molecules. The molecules of water at the surface are not acted upon by any force from the top. So, they naturally strengthen their adhesive forces.
@Agent_Sniffles, isnt that the cause of meniscus?

mani_jha · Answer

You should have posted this in Physics section

anonymous · Answer

Meniscus? O_o I'm in 8th grade, bro.