Surface Tension Video

What two properties allow water striders to walk on the surface of water?

• High density and strong legs

• Surface tension and hydrophobic legs

• Buoyancy and streamlined bodies

• Adhesion and long antennae

What type of charge distribution exists within a water molecule due to the unequal sharing of electrons?

• A partial positive charge around the oxygen atom and a partial negative charge around the hydrogen atoms

• A partial negative charge around the oxygen atom and a partial positive charge around the hydrogen atoms

• An overall neutral charge with no partial charges

• A full positive charge on oxygen and a full negative charge on hydrogen

What is the name for the attraction between the negative end of one water molecule and the positive end of another water molecule?

• Covalent bond

• Ionic bond

• Hydrogen bond

• Van der Waals force

What is the "elastic skin" on water's surface called?

• Surface Tension

• Adhesion

• Hydrogen

• Hydrophobic

How do the microsetae on a water strider's feet contribute to its ability to walk on water?

• They increase the surface area of the feet, allowing for better grip

• They are hydrophilic, attracting water molecules to create a stronger bond

• They are waxy and prevent hydrogen bond formation between the feet and water molecules

• They act as tiny paddles, propelling the strider forward