TTI1O Grade 9 Tech Exam

Tech Exam

UNIT 1: FOCUS ON TECHNOLOGY

Technology: From 2 Greek words, Tekhne  art or craft

Logos  word or speech

Technology Defined: The means or activity by which humans seek change or manipulate their environment by the practical application of knowledge; using knowledge, tools, and skills to create something.

Information age: 1970’s  when computer technology became popular.

Technological Object: A human made object that does something.

Technological Structure: A set of parts that contain or support something.

Technological System: A group of components that work together to perform a function.

Technological Activity: People’s actions, methods, and procedures to produce objects or systems to satisfy human needs.

How technology affects our society: Socially, Economically, Environmentally, and Politically.

UNIT 2: TECHNOLOGICAL PROCESS

Design Process (In order):

  1. Challenge  describes the problem or situation.
  2. Background  past solutions and consequences of the problem.
  3. Details  the characteristics of the final product.
  4. Solutions  brainstorming ideas.
  5. Best Solution  choose a best solution based upon Function, Aesthetics, Strength, Durability, Reliability, Dimensions, Weight, Materials, Assembly, and Adaptability
  6. Plan It  self explanatory
  7. Make It  self explanatory
  8. Test It  self explanatory

UNIT 3: DRAWINGS

Orthographic Drawing: 2D scaled view of what an object would look like from the front, side, and top.

Preliminary Sketches: The starting point of designs, meant to be rough and quick.

Presentation Drawings: Drawings that represent the finished product.

Technical Drawings: Precise, accurate, and detailed drawings that show information.

Oblique Drawings: A 3D method of drawing objects where the height and length are drawn perpendicular to the horizon and the width is 45 degrees from the horizon.

UNIT 4: SAFETY (BASIC RULES OF THE SHOP)

  • all PPE must be worn at all times while in the shop
  • no horseplay
  • proper attire must be worn at all times
  • check machines for flaws
  • ensure a clean workspace
  • do not use equipment without a supervisor’s permission

UNIT 5: MEASUREMENTS

Scale: The ratio of the size of the drawing to the actual object.

EXAMPLE: 1:2 = half ~ 1:3 = a third ~ 2:1 = double

UNIT 6: SOFTWARE

Photoshop: uses layers to modify existing pictures.

Flash: allows the user to use flash animation to create movies.

UNIT 7: PROPULSION

Drag: Friction between a gas and an object moving through it.

Aerodynamics: The interaction of air and objects moving through it.

Lift: An upward force created when air rushes over an object.

Gravity: A natural force that attracts all objects to each other.