Gecko Stickiness Quiz

What is the main topic introduced at the beginning of the video?

• Gecko habitats

• The history of geckos

• How geckos stick to walls

• The diet of geckos

During which era did geckos first emerge?

• Cretaceous

• Permian

• Triassic

• Jurassic

What principle explains the attraction between positive and negative charges?

• Electromagnetic force

• Covalent bonding

• Ionic bonding

• Gravitational force

What are Van der Waals forces?

• Strong forces between charged particles

• Weak forces between uncharged molecules

• Forces that only occur in metals

• Forces that repel molecules

What is the role of electron clouds in Van der Waals forces?

• They create temporary charges

• They form covalent bonds

• They create permanent charges

• They repel other molecules

What are the microscopic hairs on gecko feet called?

• Cilia

• Setae

• Spatulae

• Filaments

How do the spatulae on gecko feet contribute to their stickiness?

• By generating static electricity

• By maximizing contact with surfaces

• By creating a vacuum

• By secreting a sticky substance

Approximately how many species of geckos exist?

• 1,000

• 1,450

• 2,000

• 2,500

What percentage of gecko species have nonstick feet?

• 30%

• 40%

• 20%

• 10%

What is the significance of the setae's spatula-shaped ends?

• They aid in camouflage

• They are used for defense

• They help in swimming

• They increase the surface area for adhesion