PLTW - IED Final Exam Study Guide with Complete Solutions 2024/2025 Innovation - Correct Answer An improvement of an existing technological product, system, or method of doing something.Invention - Correct Answer A new product, system, or process that has never existed before, created by study and experimentation.Design Brief - Correct Answer A written plan that identifies a problem to be solved, its criteria, and its constraints. The design brief is used to encourage thinking of all aspects of a problem before attempting a solution.Design Process - Correct Answer A systematic problem-solving strategy, with criteria and constraints, used to develop many possible solutions to solve a problem or satisfy human needs and wants and to winnow (narrow) down the possible solutions to one final choice.Construction Line - Correct Answer Thin lines that serve as guides while sketching or drawing.Hidden Line - Correct Answer A line type that represents an edge that is not directly visible, because it is behind or beneath another surface.Isometric Sketch - Correct Answer A form of pictorial sketch in which all three drawing axes form equal angles of 120 degrees with the plane of projection.Multiview Drawings - Correct Answer Views of an object projected onto two or more orthographic planes.Object Line - Correct Answer A heavy solid line used on a drawing to represent the outline of an object.Oblique Sketch - Correct Answer A type of sketch involving a combination of a flat, orthographic front with depth lines receding at a selected angle, usually 45 degrees.Orthographic Projection - Correct Answer A method of representing three-dimensional objects on a plane having only length and breadth. Also referred to as Right Angle Projection. 1 / 2
Perspective Sketch - Correct Answer A form of pictorial sketch in which vanishing points are used to provide the depth and distortion that is seen with the human eye. Perspective drawings can be drawn using one, two, and three vanishing points.Shading - Correct Answer The representation of light and shade on a drawing or map.Technical Working Drawing - Correct Answer A drawing that is used to show the material, size, and shape of a product for manufacturing purposes.Tone - Correct Answer The general effect of color or of light and shade in a picture.ANSI - Correct Answer American National Standards Institute: A private, non-profit organization that coordinates the development and use of voluntary consensus standards in the United States.Dimension Lines - Correct Answer Lines that are thin lines capped with arrowheads, which may be broken along their length to provide space for the dimension numerals.Extension Lines - Correct Answer Thin lines used to establish the extent of a dimension. Extension lines begin with a short space from the object and extend to about .125 inches past the last dimension line. Extension lines may cross object lines, center lines, hidden lines, and other extension lines, but may not cross dimension lines.International Organization for Standardization (ISO) - Correct Answer A non-governmental global organization whose principal activity is the development of technical standards through consensus.Mean - Correct Answer The average or central value of a set of quantities.Median - Correct Answer Referring to the middle term or mean of the middle two terms of a series of values arranged in order of magnitude.Mode - Correct Answer The value that occurs most frequently in a given data set.Numeric Constraint - Correct Answer A number value, or algebraic equation that is used to control the size or location of a geometric figure.
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