Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 531 · 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.🧪 Why repeat a test three times? (a) to get reliable results (b) to use more paper (c) the first is wrong (d) it looks busy
2. 2.🧪 Three prototype bridges were tested with the same method. Design A held 210 g, design B held 260 g and design C held 310 g. Which design was the strongest? (a) design A (b) design C (c) design B
3. 3.🔍 Which is the odd one out? (a) measure the same way (b) use the same load (c) change only one thing (d) test it only once
4. 4.🧪 Three prototype bridges were tested with the same method. Design A held 270 g, design B held 370 g and design C held 320 g. Which design was the weakest? (a) design B (b) design C (c) design A
5. 5.🔍 Which is the odd one out? (a) use a new load each time (b) test it only once (c) skip writing results (d) record every result
6. 6.🧪 Is it good or poor testing to use the same load? (a) good testing (b) poor testing
7. 7.True or false: to change lots at once is poor testing. (a) False (b) True
8. 8.🔢 To build and test a straw bridge, which comes first: “load it with coins” or “strengthen the weak part”? (a) load it with coins (b) strengthen the weak part
9. 9.🔍 Which is the odd one out? (a) record every result (b) change only one thing (c) use a new load each time (d) measure the same way
10. 10.🧪 Is it good or poor testing to change lots at once? (a) poor testing (b) good testing
11. 11.🔍 Which is the odd one out? (a) use a new load each time (b) change only one thing (c) hide a failed test (d) test it only once
12. 12.🧪 The first prototype held 130 g. After the team improved it, the new prototype held 220 g. How many more grams did it hold?
13. 13.🧪 Why do engineers make prototypes? (a) to sell them at once (b) to avoid testing (c) to decorate a room (d) to test ideas cheaply
14. 14.🧪 Is it good or poor testing to test it only once? (a) good testing (b) poor testing
15. 15.🧪 A paper bridge was tested three times. It held 300 g, 190 g and 140 g. What is the mean (average) load it held, in grams?
16. 16.🧪 The first prototype held 250 g. After the team improved it, the new prototype held 330 g. How many more grams did it hold?
17. 17.True or false: to record every result is good testing. (a) False (b) True
18. 18.🧪 A paper bridge was tested three times. It held 170 g, 150 g and 160 g. What is the mean (average) load it held, in grams?
19. 19.True or false: to change only one thing is poor testing. (a) False (b) True
20. 20.🧪 A paper bridge was tested three times. It held 430 g, 250 g and 310 g. What is the mean (average) load it held, in grams?
21. 21.True or false: to hide a failed test is good testing. (a) True (b) False
22. 22.True or false: to change lots at once is good testing. (a) True (b) False
23. 23.True or false: to measure the same way is good testing. (a) False (b) True
24. 24.True or false: to use a new load each time is poor testing. (a) False (b) True
25. 25.🧪 What is a prototype? (a) a broken part (b) the final product (c) an early test model (d) a sales poster
26. 26.🔢 To build and test a straw bridge, what comes right after “load it with coins”? (a) choose and draw one (b) sketch three ideas (c) strengthen the weak part (d) build it with straws
27. 27.🧪 A paper bridge was tested three times. It held 380 g, 290 g and 200 g. What is the mean (average) load it held, in grams?
28. 28.🧪 The first prototype held 190 g. After the team improved it, the new prototype held 390 g. How many more grams did it hold?
29. 29.True or false: to skip writing results is poor testing. (a) False (b) True
30. 30.🔢 To build and test a straw bridge, which comes first: “read the challenge rules” or “load it with coins”? (a) read the challenge rules (b) load it with coins
31. 31.🧪 Is it good or poor testing to change only one thing? (a) poor testing (b) good testing
32. 32.🧪 The first prototype held 210 g. After the team improved it, the new prototype held 330 g. How many more grams did it hold?
33. 33.🧪 In a fair test, how many things do you change at a time? (a) all of them (b) none (c) two (d) one
34. 34.True or false: to use a new load each time is good testing. (a) True (b) False
35. 35.🧪 The first prototype held 70 g. After the team improved it, the new prototype held 110 g. How many more grams did it hold?
36. 36.🔍 Which is the odd one out? (a) measure the same way (b) skip writing results (c) guess, do not measure (d) test it only once
37. 37.🧪 Three prototype bridges were tested with the same method. Design A held 380 g, design B held 330 g and design C held 280 g. Which design was the strongest? (a) design A (b) design B (c) design C
38. 38.True or false: to use the same load is poor testing. (a) True (b) False
39. 39.🔢 To build and test a straw bridge, which is the FIRST step? (a) choose and draw one (b) read the challenge rules (c) build it with straws (d) sketch three ideas
40. 40.🧪 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 B (b) design C (c) design A

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