What principle do geckos use to stick to surfaces?

Gecko Adhesion and Molecular Forces

Interactive Video
•
Physics, Chemistry, Biology, Science
•
7th - 12th Grade
•
Hard

Liam Anderson
FREE Resource
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10 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Magnetic attraction
Friction
Intermolecular forces
Chemical bonding
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the term for an atom's tendency to attract electrons?
Electron affinity
Atomic radius
Ionization energy
Electronegativity
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
How do molecules with different electronegativities interact?
They repel each other
They become neutral
They create charged patches
They form ionic bonds
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What are van der Waals forces?
Strong chemical bonds
Magnetic forces
Weak interactions between charged particles
Weak interactions between uncharged molecules
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the primary function of the setae on gecko toes?
To engage van der Waals forces
To protect the gecko's feet
To secrete adhesive substances
To provide grip through friction
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
How many spatulae does a gecko have on its toes?
About two hundred
About two million
About two billion
About two thousand
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What allows a gecko to release its grip from a surface?
Applying more pressure
Increasing the angle of its toes
Decreasing the angle of its toes
Using its claws
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