Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 326 · 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.🧪 The first prototype held 180 g. After the team improved it, the new prototype held 370 g. How many more grams did it hold?
2. 2.🧪 Three prototype bridges were tested with the same method. Design A held 260 g, design B held 210 g and design C held 160 g. Which design was the strongest? (a) design C (b) design B (c) design A
3. 3.True or false: to hide a failed test is poor testing. (a) False (b) True
4. 4.🧪 Is it good or poor testing to use the same load? (a) poor testing (b) good testing
5. 5.🧪 What is a prototype? (a) a broken part (b) the final product (c) an early test model (d) a sales poster
6. 6.🧪 The first prototype held 250 g. After the team improved it, the new prototype held 330 g. How many more grams did it hold?
7. 7.🧪 Is it good or poor testing to hide a failed test? (a) good testing (b) poor testing
8. 8.🧪 The first prototype held 270 g. After the team improved it, the new prototype held 410 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 “build it with straws”? (a) strengthen the weak part (b) build it with straws
10. 10.True or false: to use a new load each time is good testing. (a) False (b) True
11. 11.🧪 Is it good or poor testing to repeat each test? (a) good testing (b) poor testing
12. 12.🔍 Which is the odd one out? (a) guess, do not measure (b) measure the same way (c) use the same load (d) change only one thing
13. 13.🔢 To build and test a straw bridge, which is the LAST step? (a) load it with coins (b) strengthen the weak part (c) build it with straws (d) choose and draw one
14. 14.🔢 To build and test a straw bridge, what comes right after “sketch three ideas”? (a) strengthen the weak part (b) build it with straws (c) choose and draw one (d) read the challenge rules
15. 15.True or false: to change lots at once is good testing. (a) True (b) False
16. 16.🔍 Which is the odd one out? (a) repeat each test (b) record every result (c) use a new load each time (d) use the same load
17. 17.🧪 Three prototype bridges were tested with the same method. Design A held 240 g, design B held 190 g and design C held 290 g. Which design was the strongest? (a) design B (b) design A (c) design C
18. 18.🧪 A paper bridge was tested three times. It held 260 g, 230 g and 290 g. What is the mean (average) load it held, in grams?
19. 19.🧪 Why repeat a test three times? (a) to get reliable results (b) it looks busy (c) to use more paper (d) the first is wrong
20. 20.🔢 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
21. 21.True or false: to test it only once is good testing. (a) True (b) False
22. 22.🧪 The first prototype held 100 g. After the team improved it, the new prototype held 220 g. How many more grams did it hold?
23. 23.🔍 Which is the odd one out? (a) change only one thing (b) use a new load each time (c) skip writing results (d) hide a failed test
24. 24.🧪 Is it good or poor testing to test it only once? (a) good testing (b) poor testing
25. 25.🧪 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 A (b) design C (c) design B
26. 26.🧪 A paper bridge was tested three times. It held 370 g, 260 g and 180 g. What is the mean (average) load it held, in grams?
27. 27.🔢 To build and test a straw bridge, which comes first: “sketch three ideas” or “load it with coins”? (a) sketch three ideas (b) load it with coins
28. 28.🧪 Is it good or poor testing to change only one thing? (a) good testing (b) poor testing
29. 29.🧪 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 weakest? (a) design C (b) design B (c) design A
30. 30.🧪 The first prototype held 140 g. After the team improved it, the new prototype held 320 g. How many more grams did it hold?
31. 31.🔢 To build and test a straw bridge, what comes right after “read the challenge rules”? (a) choose and draw one (b) strengthen the weak part (c) sketch three ideas (d) build it with straws
32. 32.🔢 To build and test a straw bridge, what comes right after “choose and draw one”? (a) strengthen the weak part (b) read the challenge rules (c) sketch three ideas (d) build it with straws
33. 33.True or false: to repeat each test is poor testing. (a) False (b) True
34. 34.True or false: to change lots at once is poor testing. (a) False (b) True
35. 35.🔢 To build and test a straw bridge, which comes first: “sketch three ideas” or “choose and draw one”? (a) choose and draw one (b) sketch three ideas
36. 36.True or false: to change only one thing is poor testing. (a) False (b) True
37. 37.🔢 To build and test a straw bridge, what comes right after “load it with coins”? (a) strengthen the weak part (b) read the challenge rules (c) build it with straws (d) choose and draw one
38. 38.🧪 A paper bridge was tested three times. It held 400 g, 270 g and 290 g. What is the mean (average) load it held, in grams?
39. 39.🔍 Which is the odd one out? (a) change lots at once (b) test it only once (c) repeat each test (d) guess, do not measure
40. 40.🧪 Is it good or poor testing to skip writing results? (a) good testing (b) poor testing

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