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# Form & Function / 7A

### Science

What is a Structure? Anything made of parts put together for a particular purpose (or purposes.)
What is the difference between Form and Function? Form is the shape and physical appearance of a structure, while function is the task or purpose of a structure.
What is a Force? A push or a Pull.
What is the Definition of Gravity? The force of attraction between all objects.
What is the difference between applied and non-contact forces? Non-contact force is forces that push or pull without contact, while applied force is when two objects come into contact.
What is the difference between mass and weight? Mass is the quantity of matter in an object, while weight is the force of gravity acting downward on an object.
What is the difference between dead, live, and dynamic loads? Dead load is the weight of the structure itself, a live load is the weight of the objects that a structure supports, and a dynamic load is a load that's caused by forces other than gravity.
What is a solid structure? An object that uses solid construction.
What is a frame structure? A network of parts that supports loads.
What is a shell structure? A hollow structure with a curved shape.
What instrument/unit is used to measure mass and weight? Mass uses balance and grams, while weight uses the newton spring scale and Newtons.
What is the difference between internal and external forces? An internal force is acting between two parts of a body, while an external force is a force acting on a structure from the outside.
What is the point of application? The point of application is the location of an object, where the force is applied.
What is the plane of application? The plane of application is an imaginary flat surface through the force passes.
What is compression? An internal force that presses or squeezes the particles of an object together.
What is torsion? Internal twisting forces created in an object as a result of a twisting motion being applied to the object.
What is tension? An internal force pulling the particles of an object apart.
What is shear? Forces acting in an object as a result of pushes and/or pulls in opposite directions; usually resulting in rips or tears of an object.
Created by: Mazu