Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 903 · 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.🧪 A paper bridge was tested three times. It held 320 g, 290 g and 260 g. What is the mean (average) load it held, in grams?
2. 2.True or false: to change lots at once is good testing. (a) True (b) False
3. 3.🔢 To build and test a straw bridge, which is the LAST step? (a) choose and draw one (b) read the challenge rules (c) build it with straws (d) strengthen the weak part
4. 4.🔍 Which is the odd one out? (a) skip writing results (b) change only one thing (c) repeat each test (d) record every result
5. 5.🧪 Three prototype bridges were tested with the same method. Design A held 210 g, design B held 160 g and design C held 260 g. Which design was the weakest? (a) design B (b) design A (c) design C
6. 6.🔢 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
7. 7.🧪 A paper bridge was tested three times. It held 370 g, 290 g and 270 g. What is the mean (average) load it held, in grams?
8. 8.🧪 What is a prototype? (a) the final product (b) an early test model (c) a sales poster (d) a broken part
9. 9.🧪 Is it good or poor testing to use a new load each time? (a) good testing (b) poor testing
10. 10.🧪 Is it good or poor testing to repeat each test? (a) poor testing (b) good testing
11. 11.🔢 To build and test a straw bridge, what comes right after “load it with coins”? (a) build it with straws (b) choose and draw one (c) strengthen the weak part (d) read the challenge rules
12. 12.True or false: to test it only once is poor testing. (a) False (b) True
13. 13.🔢 To build and test a straw bridge, which is the FIRST step? (a) read the challenge rules (b) choose and draw one (c) build it with straws (d) strengthen the weak part
14. 14.🧪 Is it good or poor testing to test it only once? (a) good testing (b) poor testing
15. 15.🔍 Which is the odd one out? (a) change only one thing (b) change lots at once (c) measure the same way (d) record every result
16. 16.🧪 Is it good or poor testing to measure the same way? (a) good testing (b) poor testing
17. 17.🧪 A paper bridge was tested three times. It held 310 g, 170 g and 150 g. What is the mean (average) load it held, in grams?
18. 18.True or false: to change only one thing is poor testing. (a) True (b) False
19. 19.True or false: to test it only once is good testing. (a) False (b) True
20. 20.🔍 Which is the odd one out? (a) test it only once (b) skip writing results (c) change lots at once (d) use the same load
21. 21.🧪 Why do engineers make prototypes? (a) to decorate a room (b) to sell them at once (c) to avoid testing (d) to test ideas cheaply
22. 22.🔢 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
23. 23.True or false: to guess, do not measure is good testing. (a) True (b) False
24. 24.🧪 Is it good or poor testing to guess, do not measure? (a) poor testing (b) good testing
25. 25.🧪 Is it good or poor testing to use the same load? (a) good testing (b) poor testing
26. 26.🧪 Why repeat a test three times? (a) to get reliable results (b) the first is wrong (c) to use more paper (d) it looks busy
27. 27.🧪 The first prototype held 270 g. After the team improved it, the new prototype held 430 g. How many more grams did it hold?
28. 28.🧪 A paper bridge was tested three times. It held 260 g, 120 g and 160 g. What is the mean (average) load it held, in grams?
29. 29.True or false: to hide a failed test is poor testing. (a) True (b) False
30. 30.True or false: to change only one thing is good testing. (a) False (b) True
31. 31.🧪 The first prototype held 140 g. After the team improved it, the new prototype held 280 g. How many more grams did it hold?
32. 32.True or false: to skip writing results is poor testing. (a) False (b) True
33. 33.🧪 A paper bridge was tested three times. It held 260 g, 200 g and 140 g. What is the mean (average) load it held, in grams?
34. 34.🧪 Three prototype bridges were tested with the same method. Design A held 210 g, design B held 310 g and design C held 260 g. Which design was the weakest? (a) design C (b) design A (c) design B
35. 35.🧪 The first prototype held 200 g. After the team improved it, the new prototype held 280 g. How many more grams did it hold?
36. 36.🔢 To build and test a straw bridge, which comes first: “choose and draw one” or “build it with straws”? (a) build it with straws (b) choose and draw one
37. 37.🧪 A paper bridge was tested three times. It held 270 g, 80 g and 160 g. What is the mean (average) load it held, in grams?
38. 38.🔢 To build and test a straw bridge, which comes first: “choose and draw one” or “strengthen the weak part”? (a) choose and draw one (b) strengthen the weak part
39. 39.🔍 Which is the odd one out? (a) skip writing results (b) test it only once (c) change only one thing (d) hide a failed test
40. 40.🔢 To build and test a straw bridge, which comes first: “load it with coins” or “sketch three ideas”? (a) load it with coins (b) sketch three ideas

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