TOM NEWBY SCHOOL

1 1 TOM NEWBY SCHOOL SUBJECT: TECHNOLOGY EXAMINER/S: MR BUSHE, DATE: 8 June 2015 MRS FOURIE SESSION: 2 MARKS:100 GRADE: 7 TIME: 2 HOURS MODERATOR: MRS FOURIE This Technology Exam has been compiled using notes and information contained in the Tom NEWBY SCHOOL Technology book. The marking memorandum has been compiled accordingly. While alternative responses will be given due acknowledgement, the official memorandum will be considered a priority document to ensure uniformity of marking. Up to 10% of the total mark allocation may be deducted for spelling and grammatical errors, except in the case of Language papers, where deductions are made according to a memorandum.

2 _____ NAME: _____ Grade 7: _____ INSTRUCTIONS: 1. Answer all the questions on the lined paper provided. 2. Rule off after each question. 3. Read each question carefully before answering. 4. Use a pencil and ruler for drawings. 5. THINK carefully before you INK! 6. Write neatly. Good Luck! _____ QUESTION 1 : MULTIPLE CHOICE Choose the correct answer. Write only the number and the correct letter, 1 c 1. Technology can be defined a) The design process to make products to solve needs or wants. b) producing products for human consumption c) testing and evaluating products d) investigating problems 2. Drawing to scale means a) The object is smaller than the drawing b) The object should be drawn to size c) The length, breadth and height are in proportion d) Working drawings that do not need to be drawn to scale 2 3.

3 The mechanical advantage (MA) of a lever depends a) The size of the fulcrum b) The weight of the load c) The length of the lever d) The amount of effort put into it 4. What is the best method to strengthen structures? a) Tubing b) Triangulation c) Folding d) Framing 5. What is the purpose of the shell of a crab? a) To contain b) To protect c) To support d) A and B above 6. A see-saw is a common example of a lever. A see-saw is called a) Third class lever b) Second class lever c) Fourth class lever d) First class lever 7. Man-made structures are made in and a) Workshops b) Offices c) Factories and workshops d) Warehouses 8.

4 Frame structures are .. a) hollow b) sturdy c) reinforced only d) light weight 3 9. Cell phones are designed to work a) Telkom lines b) MTN and Vodacom networks only c) Cell-C networks only d) Various cellular networks 10. Landline phones are a) More expensive than cell phones b) Can be used in a house, office or a factory only c) Cheaper than cell phones d) B and C above (10) QUESTION 2: TRUE OR FALSE Read the statements below and identify those that are TRUE or FALSE. Write down the letter T if the statement is TRUE and the letter F if it is FALSE, next to the number, 1 T 1. The human foot is an example of a third-class lever.

5 2. A third-class lever is used to pick up objects, a pair of tweezers, braai tongs or a fishing rod. 3. A jaws-of-life system is used to crush objects, such as a concrete wall. 4. A wax candle is classified as a frame structure. 5. Bridges and electricity pylons are often made in the same way as a bicycle frame, pieces joined together. 6. Second-class levers/ systems are like a wheelbarrow which we use every day, with the load between the fulcrum and the effort. 7. Natural structures are structures made by people. 8. Roaming from a cell phone permits/ allows the same phone to be used in one country only. 9. The base of a structure, a cell phone tower must be bigger than the top.

6 10. Artisans are people who are not skilled in a trade. (10) _____ QUESTION 3: IDENTIFYING STRUCTURES IN IMAGES 1. Look at the following pictures and identify the kind of structure of each: 4 A - A helmet B - A tent C A monument D A wooden bench E A skeleton F A carved artefact (6) 2. Write a definition for a solid structure and give one example of this kind of structure. (2) 3. Are the following natural or man-made objects? (2) a) Caves b) Clay pots 4. A _____ structure is made up of different parts that are joined together. (1) 5.

7 A structure that contains a liquid or that protects things is called a _____ structure. (1) 6. Give the name for a structure that is built for strength and has no hollow space on the inside. (1) 7. Give the name of any structure that can span over a distance. (1) 8. Which beam in a building would be the weakest? A corrugated or a triangular beam. (1) (15) _____ 5 QUESTION 4: DEFINITIONS AND MECHANICAL ADVANTAGE 1. Write a definition for what Mechanical Advantage is. (2) 2. Use of the Mechanical Advantage Formula to complete the following MA of each given lever.

8 A) Where the Load is 8000 and the effort is 40. (2) b) Where the Load in a wheelbarrow is 9775 and the effort is 25. (2) 2608 c) Where the Effort is 28 kg and the load is 14 kg. (2) d) Where the load is 900 and the effort is 50. (2) 3. Explain, in your own words, how a see-saw works. (1) 4. Why do you think we have machines? (1) (12) _____ QUESTION 5: MATCH THE CLOLUMNS 1. Match Column A with Column B. Only write the number and the letter, 1 j Column A Column B 1.

9 Investigate 2. Design brief 3. Construction lines 4. Cross-braces / Gussets 5. Disguised a. A square strengthened by putting a triangular shape in it. b. Thin lines used in sketches or drawings. c. To find, use and acknowledge information. d. Make something unrecognisable by altering its appearance. e. Includes instructions, specifications and constraints. (5) 6 Identify the different towers by looking carefully at the images. Write the name of the image you see. (4) A B C D The towers have all been designed by an _____ to solve a problem. ` (1) Give two reasons why the structure in the given image below will not fall down easily.

10 (2) Name the type of structure above and what it is made of. (2) What is the purpose of the base of this structure? (1) (15) 7 QUESTION 6 : CELL PHONE FEATURES Look carefully at the following image of a cell phone. List five (5) features (what specific apps we can find) of this cell phone. (5) When we compare mobile (cell phones) and landline phones, both positive and negative aspects can be identified. Name 3 advantages and 3 disadvantages of using a cell phone. Write your answer, in the format below, by redrawing the table on your lined paper. (6) Advantages Disadvantages 1) 1) 2) 2) 3) 3) 6.