Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 19 · 40 questions

Engineer's tip (Test fairly, record honestly): Prototype = an early model made to test an idea. Fair test: change one thing, keep the rest the same, measure and record every result. Mean of three tests = (first + second + third) ÷ 3.

1. 1.🧪 A paper bridge was tested three times. It held 280 g, 190 g and 310 g. What is the mean (average) load it held, in grams?
2. 2.🔢 To build and test a straw bridge, what comes right after “load it with coins”? (a) sketch three ideas (b) strengthen the weak part (c) build it with straws (d) choose and draw one
3. 3.🧪 A paper bridge was tested three times. It held 240 g, 140 g and 220 g. What is the mean (average) load it held, in grams?
4. 4.True or false: to record every result is good testing. (a) False (b) True
5. 5.🧪 Why do engineers make prototypes? (a) to decorate a room (b) to avoid testing (c) to test ideas cheaply (d) to sell them at once
6. 6.🧪 A paper bridge was tested three times. It held 320 g, 240 g and 370 g. What is the mean (average) load it held, in grams?
7. 7.🔢 To build and test a straw bridge, which is the FIRST step? (a) read the challenge rules (b) build it with straws (c) choose and draw one (d) sketch three ideas
8. 8.🧪 Why repeat a test three times? (a) it looks busy (b) to get reliable results (c) to use more paper (d) the first is wrong
9. 9.🧪 What is a prototype? (a) a broken part (b) a sales poster (c) the final product (d) an early test model
10. 10.True or false: to test it only once is poor testing. (a) True (b) False
11. 11.🔍 Which is the odd one out? (a) use the same load (b) guess, do not measure (c) measure the same way (d) change only one thing
12. 12.🔍 Which is the odd one out? (a) record every result (b) skip writing results (c) use the same load (d) measure the same way
13. 13.🔢 To build and test a straw bridge, what comes right after “build it with straws”? (a) read the challenge rules (b) sketch three ideas (c) load it with coins (d) choose and draw one
14. 14.🧪 A paper bridge was tested three times. It held 280 g, 170 g and 180 g. What is the mean (average) load it held, in grams?
15. 15.🧪 Is it good or poor testing to test it only once? (a) good testing (b) poor testing
16. 16.🧪 A paper bridge was tested three times. It held 410 g, 300 g and 310 g. What is the mean (average) load it held, in grams?
17. 17.🧪 A paper bridge was tested three times. It held 390 g, 270 g and 270 g. What is the mean (average) load it held, in grams?
18. 18.🧪 Is it good or poor testing to measure the same way? (a) poor testing (b) good testing
19. 19.🧪 Is it good or poor testing to change only one thing? (a) good testing (b) poor testing
20. 20.🧪 A paper bridge was tested three times. It held 340 g, 190 g and 190 g. What is the mean (average) load it held, in grams?
21. 21.🧪 The first prototype held 220 g. After the team improved it, the new prototype held 240 g. How many more grams did it hold?
22. 22.🔢 To build and test a straw bridge, which comes first: “load it with coins” or “sketch three ideas”? (a) sketch three ideas (b) load it with coins
23. 23.🧪 Is it good or poor testing to guess, do not measure? (a) poor testing (b) good testing
24. 24.🧪 The first prototype held 90 g. After the team improved it, the new prototype held 170 g. How many more grams did it hold?
25. 25.🧪 The first prototype held 50 g. After the team improved it, the new prototype held 110 g. How many more grams did it hold?
26. 26.🧪 Is it good or poor testing to hide a failed test? (a) good testing (b) poor testing
27. 27.🔍 Which is the odd one out? (a) repeat each test (b) use the same load (c) change only one thing (d) test it only once
28. 28.True or false: to use the same load is poor testing. (a) True (b) False
29. 29.True or false: to repeat each test is poor testing. (a) False (b) True
30. 30.🔍 Which is the odd one out? (a) measure the same way (b) change only one thing (c) record every result (d) change lots at once
31. 31.🔢 To build and test a straw bridge, which is the LAST step? (a) load it with coins (b) strengthen the weak part (c) read the challenge rules (d) build it with straws
32. 32.🧪 Is it good or poor testing to use a new load each time? (a) good testing (b) poor testing
33. 33.True or false: to use the same load is good testing. (a) False (b) True
34. 34.🧪 The first prototype held 210 g. After the team improved it, the new prototype held 300 g. How many more grams did it hold?
35. 35.🧪 A paper bridge was tested three times. It held 300 g, 260 g and 220 g. What is the mean (average) load it held, in grams?
36. 36.🧪 Three prototype bridges were tested with the same method. Design A held 330 g, design B held 280 g and design C held 230 g. Which design was the weakest? (a) design C (b) design B (c) design A
37. 37.🔍 Which is the odd one out? (a) test it only once (b) skip writing results (c) record every result (d) guess, do not measure
38. 38.🧪 A paper bridge was tested three times. It held 180 g, 90 g and 210 g. What is the mean (average) load it held, in grams?
39. 39.🧪 Three prototype bridges were tested with the same method. Design A held 100 g, design B held 200 g and design C held 150 g. Which design was the weakest? (a) design B (b) design C (c) design A
40. 40.🔢 To build and test a straw bridge, which comes first: “build it with straws” or “strengthen the weak part”? (a) strengthen the weak part (b) build it with straws

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