Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 596 · 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.🔍 Which is the odd one out? (a) test it only once (b) repeat each test (c) change only one thing (d) measure the same way
2. 2.🔢 To build and test a straw bridge, what comes right after “load it with coins”? (a) build it with straws (b) strengthen the weak part (c) read the challenge rules (d) sketch three ideas
3. 3.🧪 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
4. 4.🧪 Is it good or poor testing to hide a failed test? (a) good testing (b) poor testing
5. 5.🧪 Is it good or poor testing to measure the same way? (a) good testing (b) poor testing
6. 6.🧪 What is a prototype? (a) a broken part (b) the final product (c) a sales poster (d) an early test model
7. 7.🧪 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 B (b) design C (c) design A
8. 8.🧪 Is it good or poor testing to repeat each test? (a) good testing (b) poor testing
9. 9.🔍 Which is the odd one out? (a) repeat each test (b) change only one thing (c) use the same load (d) use a new load each time
10. 10.True or false: to test it only once is poor testing. (a) True (b) False
11. 11.🧪 A paper bridge was tested three times. It held 180 g, 130 g and 230 g. What is the mean (average) load it held, in grams?
12. 12.🧪 Why do engineers make prototypes? (a) to decorate a room (b) to test ideas cheaply (c) to avoid testing (d) to sell them at once
13. 13.🧪 Three prototype bridges were tested with the same method. Design A held 340 g, design B held 390 g and design C held 290 g. Which design was the weakest? (a) design A (b) design C (c) design B
14. 14.🧪 The first prototype held 130 g. After the team improved it, the new prototype held 170 g. How many more grams did it hold?
15. 15.True or false: to change only one thing is poor testing. (a) True (b) False
16. 16.🧪 A paper bridge was tested three times. It held 270 g, 180 g and 330 g. What is the mean (average) load it held, in grams?
17. 17.🧪 The first prototype held 130 g. After the team improved it, the new prototype held 190 g. How many more grams did it hold?
18. 18.🔍 Which is the odd one out? (a) change lots at once (b) guess, do not measure (c) use the same load (d) test it only once
19. 19.🔍 Which is the odd one out? (a) guess, do not measure (b) skip writing results (c) change only one thing (d) change lots at once
20. 20.True or false: to guess, do not measure is good testing. (a) True (b) False
21. 21.True or false: to measure the same way is poor testing. (a) True (b) False
22. 22.🧪 Three prototype bridges were tested with the same method. Design A held 120 g, design B held 170 g and design C held 220 g. Which design was the strongest? (a) design C (b) design B (c) design A
23. 23.🧪 The first prototype held 280 g. After the team improved it, the new prototype held 440 g. How many more grams did it hold?
24. 24.True or false: to record every result is poor testing. (a) True (b) False
25. 25.🔢 To build and test a straw bridge, which comes first: “load it with coins” or “choose and draw one”? (a) choose and draw one (b) load it with coins
26. 26.🧪 In a fair test, how many things do you change at a time? (a) two (b) all of them (c) none (d) one
27. 27.🔢 To build and test a straw bridge, what comes right after “sketch three ideas”? (a) choose and draw one (b) read the challenge rules (c) load it with coins (d) build it with straws
28. 28.🧪 A paper bridge was tested three times. It held 220 g, 110 g and 210 g. What is the mean (average) load it held, in grams?
29. 29.🧪 The first prototype held 170 g. After the team improved it, the new prototype held 300 g. How many more grams did it hold?
30. 30.🔍 Which is the odd one out? (a) test it only once (b) guess, do not measure (c) repeat each test (d) change lots at once
31. 31.🧪 The first prototype held 140 g. After the team improved it, the new prototype held 160 g. How many more grams did it hold?
32. 32.🔢 To build and test a straw bridge, which comes first: “read the challenge rules” or “build it with straws”? (a) read the challenge rules (b) build it with straws
33. 33.True or false: to change only one thing is good testing. (a) True (b) False
34. 34.🧪 Is it good or poor testing to change only one thing? (a) good testing (b) poor testing
35. 35.🔢 To build and test a straw bridge, which comes first: “strengthen the weak part” or “build it with straws”? (a) build it with straws (b) strengthen the weak part
36. 36.🔢 To build and test a straw bridge, which is the LAST step? (a) strengthen the weak part (b) load it with coins (c) sketch three ideas (d) choose and draw one
37. 37.🧪 A paper bridge was tested three times. It held 400 g, 260 g and 270 g. What is the mean (average) load it held, in grams?
38. 38.🧪 Three prototype bridges were tested with the same method. Design A held 180 g, design B held 130 g and design C held 230 g. Which design was the weakest? (a) design A (b) design B (c) design C
39. 39.🧪 A paper bridge was tested three times. It held 240 g, 110 g and 100 g. What is the mean (average) load it held, in grams?
40. 40.🔢 To build and test a straw bridge, which comes first: “choose and draw one” or “load it with coins”? (a) load it with coins (b) choose and draw one

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