Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 50 · 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.True or false: to test it only once is good testing. (a) True (b) False
2. 2.🧪 Is it good or poor testing to hide a failed test? (a) poor testing (b) good testing
3. 3.🔢 To build and test a straw bridge, which comes first: “build it with straws” or “sketch three ideas”? (a) build it with straws (b) sketch three ideas
4. 4.🧪 Why repeat a test three times? (a) to use more paper (b) the first is wrong (c) it looks busy (d) to get reliable results
5. 5.🧪 Is it good or poor testing to test it only once? (a) poor testing (b) good testing
6. 6.🧪 What is a prototype? (a) an early test model (b) a broken part (c) a sales poster (d) the final product
7. 7.🧪 Is it good or poor testing to use the same load? (a) poor testing (b) good testing
8. 8.🧪 Is it good or poor testing to repeat each test? (a) poor testing (b) good testing
9. 9.True or false: to repeat each test is good testing. (a) False (b) True
10. 10.🧪 A paper bridge was tested three times. It held 180 g, 70 g and 260 g. What is the mean (average) load it held, in grams?
11. 11.🧪 Is it good or poor testing to use a new load each time? (a) good testing (b) poor testing
12. 12.True or false: to measure the same way is poor testing. (a) True (b) False
13. 13.🧪 Is it good or poor testing to change only one thing? (a) poor testing (b) good testing
14. 14.🧪 A paper bridge was tested three times. It held 410 g, 230 g and 320 g. What is the mean (average) load it held, in grams?
15. 15.True or false: to skip writing results is good testing. (a) False (b) True
16. 16.🧪 Three prototype bridges were tested with the same method. Design A held 220 g, design B held 270 g and design C held 320 g. Which design was the weakest? (a) design C (b) design B (c) design A
17. 17.🔢 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) load it with coins
18. 18.🧪 Is it good or poor testing to skip writing results? (a) poor testing (b) good testing
19. 19.🧪 Three prototype bridges were tested with the same method. Design A held 240 g, design B held 290 g and design C held 340 g. Which design was the weakest? (a) design C (b) design B (c) design A
20. 20.🔢 To build and test a straw bridge, which comes first: “strengthen the weak part” or “load it with coins”? (a) load it with coins (b) strengthen the weak part
21. 21.🔢 To build and test a straw bridge, which comes first: “read the challenge rules” or “strengthen the weak part”? (a) read the challenge rules (b) strengthen the weak part
22. 22.🧪 Why do engineers make prototypes? (a) to test ideas cheaply (b) to decorate a room (c) to sell them at once (d) to avoid testing
23. 23.🔢 To build and test a straw bridge, what comes right after “load it with coins”? (a) sketch three ideas (b) choose and draw one (c) build it with straws (d) strengthen the weak part
24. 24.🧪 The first prototype held 240 g. After the team improved it, the new prototype held 270 g. How many more grams did it hold?
25. 25.🔍 Which is the odd one out? (a) use a new load each time (b) hide a failed test (c) change lots at once (d) repeat each test
26. 26.🔍 Which is the odd one out? (a) record every result (b) use the same load (c) repeat each test (d) test it only once
27. 27.🔢 To build and test a straw bridge, which is the FIRST step? (a) load it with coins (b) choose and draw one (c) read the challenge rules (d) sketch three ideas
28. 28.True or false: to change lots at once is good testing. (a) False (b) True
29. 29.🧪 Three prototype bridges were tested with the same method. Design A held 140 g, design B held 190 g and design C held 240 g. Which design was the weakest? (a) design B (b) design A (c) design C
30. 30.🧪 In a fair test, how many things do you change at a time? (a) one (b) none (c) all of them (d) two
31. 31.True or false: to change only one thing is poor testing. (a) False (b) True
32. 32.🧪 The first prototype held 130 g. After the team improved it, the new prototype held 300 g. How many more grams did it hold?
33. 33.🧪 Three prototype bridges were tested with the same method. Design A held 230 g, design B held 180 g and design C held 130 g. Which design was the weakest? (a) design C (b) design A (c) design B
34. 34.🔢 To build and test a straw bridge, which comes first: “sketch three ideas” or “load it with coins”? (a) load it with coins (b) sketch three ideas
35. 35.🔢 To build and test a straw bridge, which comes first: “choose and draw one” or “read the challenge rules”? (a) read the challenge rules (b) choose and draw one
36. 36.🧪 A paper bridge was tested three times. It held 330 g, 240 g and 390 g. What is the mean (average) load it held, in grams?
37. 37.🔍 Which is the odd one out? (a) record every result (b) skip writing results (c) measure the same way (d) use the same load
38. 38.True or false: to use the same load is poor testing. (a) True (b) False
39. 39.🧪 The first prototype held 50 g. After the team improved it, the new prototype held 90 g. How many more grams did it hold?
40. 40.🔢 To build and test a straw bridge, what comes right after “build it with straws”? (a) strengthen the weak part (b) read the challenge rules (c) load it with coins (d) choose and draw one

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