Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 23 · 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.🧪 Is it good or poor testing to use the same load? (a) poor testing (b) good testing
2. 2.🧪 A paper bridge was tested three times. It held 270 g, 160 g and 110 g. What is the mean (average) load it held, in grams?
3. 3.🧪 What is a prototype? (a) a broken part (b) a sales poster (c) an early test model (d) the final product
4. 4.🧪 In a fair test, how many things do you change at a time? (a) two (b) all of them (c) none (d) one
5. 5.🧪 The first prototype held 70 g. After the team improved it, the new prototype held 100 g. How many more grams did it hold?
6. 6.🧪 Three prototype bridges were tested with the same method. Design A held 110 g, design B held 160 g and design C held 210 g. Which design was the weakest? (a) design A (b) design B (c) design C
7. 7.True or false: to change only one thing is poor testing. (a) False (b) True
8. 8.🧪 A paper bridge was tested three times. It held 210 g, 110 g and 160 g. What is the mean (average) load it held, in grams?
9. 9.🧪 A paper bridge was tested three times. It held 290 g, 160 g and 210 g. What is the mean (average) load it held, in grams?
10. 10.🧪 A paper bridge was tested three times. It held 280 g, 130 g and 220 g. What is the mean (average) load it held, in grams?
11. 11.True or false: to hide a failed test is good testing. (a) True (b) False
12. 12.🧪 The first prototype held 60 g. After the team improved it, the new prototype held 240 g. How many more grams did it hold?
13. 13.🧪 Is it good or poor testing to measure the same way? (a) poor testing (b) good testing
14. 14.🧪 Is it good or poor testing to use a new load each time? (a) good testing (b) poor testing
15. 15.🧪 Is it good or poor testing to skip writing results? (a) good testing (b) poor testing
16. 16.🧪 Three prototype bridges were tested with the same method. Design A held 160 g, design B held 210 g and design C held 110 g. Which design was the weakest? (a) design B (b) design C (c) design A
17. 17.True or false: to hide a failed test is poor testing. (a) False (b) True
18. 18.🧪 A paper bridge was tested three times. It held 370 g, 290 g and 390 g. What is the mean (average) load it held, in grams?
19. 19.🧪 Three prototype bridges were tested with the same method. Design A held 230 g, design B held 130 g and design C held 180 g. Which design was the strongest? (a) design A (b) design B (c) design C
20. 20.True or false: to test it only once is poor testing. (a) True (b) False
21. 21.🔢 To build and test a straw bridge, which is the LAST step? (a) choose and draw one (b) build it with straws (c) strengthen the weak part (d) sketch three ideas
22. 22.🔢 To build and test a straw bridge, which is the FIRST step? (a) strengthen the weak part (b) load it with coins (c) read the challenge rules (d) choose and draw one
23. 23.🔍 Which is the odd one out? (a) use the same load (b) record every result (c) guess, do not measure (d) repeat each test
24. 24.True or false: to use the same load is good testing. (a) False (b) True
25. 25.🧪 A paper bridge was tested three times. It held 260 g, 60 g and 160 g. What is the mean (average) load it held, in grams?
26. 26.🧪 Why do engineers make prototypes? (a) to avoid testing (b) to test ideas cheaply (c) to sell them at once (d) to decorate a room
27. 27.🧪 Why repeat a test three times? (a) it looks busy (b) the first is wrong (c) to get reliable results (d) to use more paper
28. 28.🔍 Which is the odd one out? (a) test it only once (b) change lots at once (c) guess, do not measure (d) repeat each test
29. 29.🧪 Three prototype bridges were tested with the same method. Design A held 280 g, design B held 330 g and design C held 380 g. Which design was the weakest? (a) design B (b) design A (c) design C
30. 30.True or false: to change only one thing is good testing. (a) False (b) True
31. 31.🧪 A paper bridge was tested three times. It held 230 g, 110 g and 230 g. What is the mean (average) load it held, in grams?
32. 32.🔍 Which is the odd one out? (a) use the same load (b) change only one thing (c) hide a failed test (d) record every result
33. 33.🔍 Which is the odd one out? (a) guess, do not measure (b) test it only once (c) measure the same way (d) hide a failed test
34. 34.🧪 A paper bridge was tested three times. It held 250 g, 140 g and 300 g. What is the mean (average) load it held, in grams?
35. 35.🧪 Is it good or poor testing to change lots at once? (a) good testing (b) poor testing
36. 36.🧪 Three prototype bridges were tested with the same method. Design A held 290 g, design B held 340 g and design C held 240 g. Which design was the weakest? (a) design B (b) design A (c) design C
37. 37.🧪 Is it good or poor testing to hide a failed test? (a) good testing (b) poor testing
38. 38.🔢 To build and test a straw bridge, which comes first: “strengthen the weak part” or “read the challenge rules”? (a) strengthen the weak part (b) read the challenge rules
39. 39.True or false: to record every result is poor testing. (a) True (b) False
40. 40.True or false: to guess, do not measure is poor testing. (a) False (b) True

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