Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 33 · 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.🧪 What is a prototype? (a) a broken part (b) a sales poster (c) the final product (d) an early test model
2. 2.🔢 To build and test a straw bridge, which is the FIRST step? (a) load it with coins (b) strengthen the weak part (c) build it with straws (d) read the challenge rules
3. 3.🧪 A paper bridge was tested three times. It held 360 g, 310 g and 350 g. What is the mean (average) load it held, in grams?
4. 4.🧪 Is it good or poor testing to test it only once? (a) good testing (b) poor testing
5. 5.🧪 The first prototype held 200 g. After the team improved it, the new prototype held 330 g. How many more grams did it hold?
6. 6.🧪 Is it good or poor testing to record every result? (a) poor testing (b) good testing
7. 7.🧪 A paper bridge was tested three times. It held 310 g, 190 g and 130 g. What is the mean (average) load it held, in grams?
8. 8.🧪 The first prototype held 60 g. After the team improved it, the new prototype held 240 g. How many more grams did it hold?
9. 9.🔢 To build and test a straw bridge, which comes first: “strengthen the weak part” or “load it with coins”? (a) strengthen the weak part (b) load it with coins
10. 10.True or false: to guess, do not measure is poor testing. (a) False (b) True
11. 11.🔍 Which is the odd one out? (a) repeat each test (b) change lots at once (c) skip writing results (d) use a new load each time
12. 12.🔢 To build and test a straw bridge, what comes right after “choose and draw one”? (a) sketch three ideas (b) build it with straws (c) read the challenge rules (d) strengthen the weak part
13. 13.🧪 Is it good or poor testing to change only one thing? (a) good testing (b) poor testing
14. 14.🧪 In a fair test, how many things do you change at a time? (a) two (b) one (c) all of them (d) none
15. 15.🧪 Is it good or poor testing to hide a failed test? (a) poor testing (b) good testing
16. 16.🧪 Three prototype bridges were tested with the same method. Design A held 170 g, design B held 270 g and design C held 220 g. Which design was the strongest? (a) design A (b) design C (c) design B
17. 17.🔍 Which is the odd one out? (a) use the same load (b) skip writing results (c) record every result (d) change only one thing
18. 18.🧪 Why do engineers make prototypes? (a) to sell them at once (b) to test ideas cheaply (c) to decorate a room (d) to avoid testing
19. 19.🧪 The first prototype held 180 g. After the team improved it, the new prototype held 360 g. How many more grams did it hold?
20. 20.🔍 Which is the odd one out? (a) test it only once (b) use the same load (c) record every result (d) change only one thing
21. 21.🧪 The first prototype held 270 g. After the team improved it, the new prototype held 390 g. How many more grams did it hold?
22. 22.🧪 The first prototype held 230 g. After the team improved it, the new prototype held 240 g. How many more grams did it hold?
23. 23.🔍 Which is the odd one out? (a) skip writing results (b) change only one thing (c) guess, do not measure (d) hide a failed test
24. 24.🔢 To build and test a straw bridge, which comes first: “build it with straws” or “strengthen the weak part”? (a) build it with straws (b) strengthen the weak part
25. 25.True or false: to change lots at once is poor testing. (a) True (b) False
26. 26.🧪 Three prototype bridges were tested with the same method. Design A held 280 g, design B held 380 g and design C held 330 g. Which design was the strongest? (a) design A (b) design B (c) design C
27. 27.🧪 The first prototype held 150 g. After the team improved it, the new prototype held 200 g. How many more grams did it hold?
28. 28.🧪 Is it good or poor testing to use a new load each time? (a) poor testing (b) good testing
29. 29.🧪 Is it good or poor testing to repeat each test? (a) good testing (b) poor testing
30. 30.🧪 Is it good or poor testing to use the same load? (a) poor testing (b) good testing
31. 31.🧪 Three prototype bridges were tested with the same method. Design A held 120 g, design B held 220 g and design C held 170 g. Which design was the strongest? (a) design B (b) design A (c) design C
32. 32.🧪 Why repeat a test three times? (a) to use more paper (b) it looks busy (c) to get reliable results (d) the first is wrong
33. 33.True or false: to use the same load is poor testing. (a) False (b) True
34. 34.🧪 A paper bridge was tested three times. It held 380 g, 290 g and 230 g. What is the mean (average) load it held, in grams?
35. 35.🧪 The first prototype held 130 g. After the team improved it, the new prototype held 330 g. How many more grams did it hold?
36. 36.🧪 Is it good or poor testing to guess, do not measure? (a) good testing (b) poor testing
37. 37.True or false: to skip writing results is poor testing. (a) True (b) False
38. 38.🧪 Is it good or poor testing to change lots at once? (a) good testing (b) poor testing
39. 39.🧪 Is it good or poor testing to measure the same way? (a) poor testing (b) good testing
40. 40.🧪 A paper bridge was tested three times. It held 190 g, 170 g and 150 g. What is the mean (average) load it held, in grams?

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