Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 576 · 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.🔍 Which is the odd one out? (a) skip writing results (b) test it only once (c) change lots at once (d) change only one thing
2. 2.🧪 A paper bridge was tested three times. It held 280 g, 190 g and 370 g. What is the mean (average) load it held, in grams?
3. 3.🧪 A paper bridge was tested three times. It held 250 g, 120 g and 140 g. What is the mean (average) load it held, in grams?
4. 4.🧪 Is it good or poor testing to use a new load each time? (a) poor testing (b) good testing
5. 5.🧪 Why repeat a test three times? (a) the first is wrong (b) to use more paper (c) it looks busy (d) to get reliable results
6. 6.🧪 The first prototype held 300 g. After the team improved it, the new prototype held 440 g. How many more grams did it hold?
7. 7.🔍 Which is the odd one out? (a) record every result (b) change lots at once (c) repeat each test (d) use the same load
8. 8.🧪 A paper bridge was tested three times. It held 280 g, 170 g and 210 g. What is the mean (average) load it held, in grams?
9. 9.🧪 The first prototype held 120 g. After the team improved it, the new prototype held 140 g. How many more grams did it hold?
10. 10.🧪 Is it good or poor testing to record every result? (a) good testing (b) poor testing
11. 11.True or false: to use a new load each time is good testing. (a) True (b) False
12. 12.🧪 Is it good or poor testing to hide a failed test? (a) poor testing (b) good testing
13. 13.🔢 To build and test a straw bridge, which is the FIRST step? (a) build it with straws (b) read the challenge rules (c) choose and draw one (d) sketch three ideas
14. 14.🧪 Three prototype bridges were tested with the same method. Design A held 250 g, design B held 300 g and design C held 350 g. Which design was the strongest? (a) design C (b) design A (c) design B
15. 15.🔍 Which is the odd one out? (a) use a new load each time (b) skip writing results (c) measure the same way (d) change lots at once
16. 16.🔍 Which is the odd one out? (a) repeat each test (b) record every result (c) use the same load (d) guess, do not measure
17. 17.🧪 Is it good or poor testing to repeat each test? (a) good testing (b) poor testing
18. 18.🧪 Three prototype bridges were tested with the same method. Design A held 190 g, design B held 240 g and design C held 140 g. Which design was the weakest? (a) design A (b) design C (c) design B
19. 19.🧪 What is a prototype? (a) a sales poster (b) an early test model (c) a broken part (d) the final product
20. 20.🧪 The first prototype held 140 g. After the team improved it, the new prototype held 230 g. How many more grams did it hold?
21. 21.True or false: to measure the same way is good testing. (a) True (b) False
22. 22.🔍 Which is the odd one out? (a) change lots at once (b) hide a failed test (c) record every result (d) test it only once
23. 23.True or false: to change lots at once is good testing. (a) False (b) True
24. 24.True or false: to change only one thing is poor testing. (a) True (b) False
25. 25.🧪 Why do engineers make prototypes? (a) to avoid testing (b) to test ideas cheaply (c) to decorate a room (d) to sell them at once
26. 26.🧪 The first prototype held 90 g. After the team improved it, the new prototype held 280 g. How many more grams did it hold?
27. 27.🧪 Three prototype bridges were tested with the same method. Design A held 320 g, design B held 270 g and design C held 220 g. Which design was the weakest? (a) design B (b) design C (c) design A
28. 28.True or false: to use the same load is poor testing. (a) True (b) False
29. 29.🧪 A paper bridge was tested three times. It held 410 g, 310 g and 210 g. What is the mean (average) load it held, in grams?
30. 30.🧪 Three prototype bridges were tested with the same method. Design A held 170 g, design B held 120 g and design C held 220 g. Which design was the weakest? (a) design B (b) design C (c) design A
31. 31.🔢 To build and test a straw bridge, what comes right after “build it with straws”? (a) strengthen the weak part (b) sketch three ideas (c) read the challenge rules (d) load it with coins
32. 32.🧪 A paper bridge was tested three times. It held 240 g, 130 g and 110 g. What is the mean (average) load it held, in grams?
33. 33.🧪 Is it good or poor testing to use the same load? (a) poor testing (b) good testing
34. 34.True or false: to measure the same way is poor testing. (a) True (b) False
35. 35.🧪 A paper bridge was tested three times. It held 220 g, 120 g and 320 g. What is the mean (average) load it held, in grams?
36. 36.True or false: to record every result is poor testing. (a) True (b) False
37. 37.🧪 Is it good or poor testing to change lots at once? (a) poor testing (b) good testing
38. 38.🧪 A paper bridge was tested three times. It held 260 g, 160 g and 180 g. What is the mean (average) load it held, in grams?
39. 39.🧪 The first prototype held 80 g. After the team improved it, the new prototype held 240 g. How many more grams did it hold?
40. 40.🔢 To build and test a straw bridge, what comes right after “sketch three ideas”? (a) load it with coins (b) strengthen the weak part (c) choose and draw one (d) build it with straws

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