Science test prep

Center of Gravity : a point from which the weight of a body or system may be considered to act.

Tension- the state of being stretched tight.

Magnitude -the great size or extent of something.

Dead Load- the intrinsic weight of a structure or vehicle, excluding the weight of passengers ans goods.

External Forces- are forces that are applied outside of the structure

Internal Forces- are forces that are applied from inside the structure.

Live Load - The weight of people and goods in a building or vehicle.

Compression -the act, process, or result of compressing

Torsion -A force that acts on a material by twisting its ends in opposite directions.

Shear -a strain in the structure of a substance produced by pressure, when its layers are laterally shifted in relation to each other.

What makes a structure solid- to make a structure solid, you need to make sure that the center of gravity is low enough, the materials are durable, and the shapes that are being used are strong, such as triangles.

How to find a structures center of gravity- Locate roughly the middle of the object , the average location of the weight of the object.

Asymmetrical Structures- not symmetrical , no aesthetics, and no stability.

Symmetrical Structures- symmetrical, aesthetics, and stability.

Why does structural failure occur- when the structure cannot withstand its load.

What are company concerns when they are designing and manufacturing products for consumers-Company concerns include affordability, accessibility, aesthetics, usefulness, materials, and durability.

Ergonomics- It's the idea that essential tools that require prolonged use won't harm you.

different types of structures- The different kinds of structures are shell structures, solid structures, frame structures.

Design features intended to improve structural stability are- beams, arches, domes, trusses and corrugation.