PLTW Intro to Engineering Final Study Guide
PLTW Intro to Engineering Final Study Guide
Arbitration The hearing and determination of a dispute or the settling of differences between parties by a person or persons chosen or agreed to by them. Asymmetry Symmetry in which both halves of a composition are not identical. Also referred to as informal balance. Cabinet Pictorial Oblique pictorial where depth is represented as half scale compared to the height and width scale. Cartesian Coordinate System A rectangular coordinate system created by three mutually perpendicular coordinate axes, commonly labeled X, Y, and Z. Cavalier Pictorial Oblique pictorial where height, width, and depth are represented at full scale. Center Line A line which defines the center of arcs, circles, or symmetrical parts.
Centroid A 3D point defining the geometric center of a solid. Circumscribe 1. A triangle located round a polygon such as a circle. 2 To draw a figure around another, touching it at points but not cutting it. Construction Line lightly drawn lines to guide drawing other lines and shapes.
Depth The measurement associated with an object’s fronttoback dimension or extent of something from side to side. Dimension A measurable extent, such as the three principal dimensions of an object is width, height, and depth. Ellipse A regular oval shape, traced by a point moving in a plane so that the sum of its distances from two other points is constant, or resulting when a cone is cut by an oblique plane which does not intersect the base. Environmental Protection Agency (EPA)
Ergonomics the study of workplace equipment design or how to arrange and design devices, machines, or workspace so that people and things interact safely and most efficiently. Extension Line Line which represents where a dimension starts and stops. Fillet A curve formed at the interior intersection between two or more surfaces Freehand – Sketching which is done manually without the aid of instruments such as rulers. Gestalt The principle that maintains that the human eye sees objects in their entirety before perceiving their individual parts. Grid A network of lines that cross each other to form a series of squares or rectangles. Hidden Line A line type that represents an edge that is not directly visible. International Organization for Standardization (IOS)
Isometric Sketch A form of pictorial sketch in which all three drawing axes form equal angles of 120 degrees with the plane of projection. Leader Line Line which indicates dimensions of arcs, circles and detail Least Material Condition (LMC)
Line Conventions Standardization of lines used on technical drawings by line weight and style. Line Weight Also called line width. The thickness of a line, characterized as thick or thin Long Break Line A line which indicates that a very long objects with uniform detail is drawn foreshortened. Mediation The act or process of using an intermediary to effect an agreement or reconciliation Meniscus The curved upper surface of a liquid column that is concave when the containing walls are wetted by the liquid and convex when not.
Norms Principles of right action, binding upon the members of a group and serving to guide, control, or regulate proper and acceptable behavior. Object Line A heavy solid line used on a drawing to represent the outline of an object. Oblique Sketch A form of pictorial in which an object is represented as true width and height, but the depth can be any size and drawn at any angle. Orthographic Projection A method of representing threedimensional objects on a plane having only length and breadth. Also referred to as Right Angle Projection.
Occupation Safety and Health Administration (OSHA) assure the safety and health of America’s workers Perspective Sketch A form of pictorial sketch in which vanishing points are used to provide the depth and distortion that is seen with the human eye Pictorial Sketch A sketch that shows an object’s height, width, and depth in a single view. Plane A flat surface on which a straight line joining any two points would wholly lie. Point A location in space Principal Axes The lines of intersection created from three mutually perpendicular planes, with the three planes’ point of intersection at the centroid of the part. Profile An outline of an object when viewed from one side.
Projection Line An imaginary line that is used to locate or project the corners, edges, and features of a threedimensional object onto an imaginary twodimensional surface. Projection Plane An imaginary surface between the object and the observer on which the view of the object is projected and drawn. Proportion 1. The relationship of one thing to another in size, amount, etc. 2. Size or weight relationships among structures or among elements in a single structure. Scale 1. A straightedged strip of rigid material marked at regular intervals that is used to measure distances.
2. A proportion between two sets of dimensions used to develop accurate, larger or smaller prototypes, or models. Section Lines Thin lines used in a section view to indicate where the cutting plane line has cut through material. Standard Deviation The distance of a value in a population (or sample) from the mean value of the population (or sample). Technical Working Drawing A drawing that is used to show the material, size, and shape of a product for manufacturing purposes. Tone The general effect of color or of light and shade in a picture View Colloquial term for views of an object projected onto two or more orthographic planes in a multiview drawing.
A+

Subject: Dimension, System,

University/College: University of Arkansas System

Type of paper: Thesis/Dissertation Chapter

Date: 22 April 2016

Words:

Pages:
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