Structures
This is something made of parts put together for a particular purpose.
What is a structure?
A push or a pull is called this.
What is a force?
This is the amount of matter in an object.
What is mass?
This internal force pulls particles apart.
What is tension?
A bicycle helmet is classified as this type of structure.
What is a shell structure?
This feature describes what a structure is designed to do.
What is function?
This non-contact force pulls objects toward Earth.
What is gravity?
This is the force of gravity acting on an object.
What is weight?
This internal force squeezes particles together.
What is compression?
A suspension bridge cable mainly experiences this internal force.
What is tension?
A spiderweb, anthill, and coral reef are examples of this kind of structure.
What are natural structures?
This type of force happens when two objects touch.
What is an applied force (contact force)?
This unit is used to measure weight.
What are newtons?
Twisting a wet towel shows this internal force.
What is torsion?
Pushing a tall filing cabinet near the top might cause this to happen.
What is tipping over?
These are the three main forms used to classify structures.
What are solid, frame, and shell structures?
Magnetic force and electrostatic force are examples of this kind of force.
What are non-contact forces?
This is the weight of the structure itself.
What is dead load?
Scissors cutting paper demonstrate this internal force.
What is shear?
This type of structure uses more than one structure form working together.
What is a combination structure?
This type of structure has a hollow curved shape and is both strong and lightweight.
What is a shell structure?
These are the two things every force has.
What are magnitude and direction?
Strong wind pushing against a building is this kind of load.
What is a dynamic load?
Name all four internal forces.
What are tension, compression, torsion, and shear?
Buildings in earthquake zones must be designed differently because of these forces.
What are strong external forces caused by earthquakes?