Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 954 · 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.🧪 Three prototype bridges were tested with the same method. Design A held 280 g, design B held 330 g and design C held 230 g. Which design was the weakest? (a) design A (b) design C (c) design B
2. 2.🧪 The first prototype held 120 g. After the team improved it, the new prototype held 250 g. How many more grams did it hold?
3. 3.🔢 To build and test a straw bridge, what comes right after “load it with coins”? (a) read the challenge rules (b) strengthen the weak part (c) choose and draw one (d) sketch three ideas
4. 4.🧪 Is it good or poor testing to measure the same way? (a) poor testing (b) good testing
5. 5.🧪 In a fair test, how many things do you change at a time? (a) one (b) all of them (c) none (d) two
6. 6.🔍 Which is the odd one out? (a) change lots at once (b) test it only once (c) use a new load each time (d) repeat each test
7. 7.True or false: to skip writing results is good testing. (a) True (b) False
8. 8.🧪 A paper bridge was tested three times. It held 190 g, 180 g and 170 g. What is the mean (average) load it held, in grams?
9. 9.🧪 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
10. 10.🔢 To build and test a straw bridge, which is the FIRST step? (a) build it with straws (b) read the challenge rules (c) load it with coins (d) choose and draw one
11. 11.True or false: to hide a failed test is good testing. (a) False (b) True
12. 12.🧪 The first prototype held 110 g. After the team improved it, the new prototype held 290 g. How many more grams did it hold?
13. 13.🧪 Why do engineers make prototypes? (a) to test ideas cheaply (b) to avoid testing (c) to sell them at once (d) to decorate a room
14. 14.True or false: to skip writing results is poor testing. (a) False (b) True
15. 15.🔢 To build and test a straw bridge, which is the LAST step? (a) strengthen the weak part (b) sketch three ideas (c) load it with coins (d) read the challenge rules
16. 16.True or false: to test it only once is good testing. (a) True (b) False
17. 17.True or false: to repeat each test is poor testing. (a) False (b) True
18. 18.🔍 Which is the odd one out? (a) hide a failed test (b) change only one thing (c) use a new load each time (d) guess, do not measure
19. 19.🧪 Three prototype bridges were tested with the same method. Design A held 330 g, design B held 280 g and design C held 380 g. Which design was the strongest? (a) design A (b) design B (c) design C
20. 20.🧪 Is it good or poor testing to skip writing results? (a) good testing (b) poor testing
21. 21.🧪 Three prototype bridges were tested with the same method. Design A held 270 g, design B held 320 g and design C held 370 g. Which design was the weakest? (a) design A (b) design B (c) design C
22. 22.🧪 A paper bridge was tested three times. It held 180 g, 140 g and 220 g. What is the mean (average) load it held, in grams?
23. 23.True or false: to guess, do not measure is good testing. (a) True (b) False
24. 24.True or false: to guess, do not measure is poor testing. (a) False (b) True
25. 25.🔍 Which is the odd one out? (a) test it only once (b) change only one thing (c) repeat each test (d) use the same load
26. 26.🧪 A paper bridge was tested three times. It held 300 g, 140 g and 220 g. What is the mean (average) load it held, in grams?
27. 27.🧪 Is it good or poor testing to hide a failed test? (a) good testing (b) poor testing
28. 28.🔢 To build and test a straw bridge, what comes right after “build it with straws”? (a) sketch three ideas (b) load it with coins (c) strengthen the weak part (d) read the challenge rules
29. 29.🧪 Three prototype bridges were tested with the same method. Design A held 200 g, design B held 150 g and design C held 100 g. Which design was the weakest? (a) design A (b) design B (c) design C
30. 30.🧪 Is it good or poor testing to change lots at once? (a) poor testing (b) good testing
31. 31.🧪 What is a prototype? (a) an early test model (b) a sales poster (c) the final product (d) a broken part
32. 32.🧪 The first prototype held 160 g. After the team improved it, the new prototype held 170 g. How many more grams did it hold?
33. 33.🧪 Three prototype bridges were tested with the same method. Design A held 390 g, design B held 290 g and design C held 340 g. Which design was the strongest? (a) design B (b) design C (c) design A
34. 34.🔢 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
35. 35.True or false: to change lots at once is good testing. (a) True (b) False
36. 36.🧪 The first prototype held 60 g. After the team improved it, the new prototype held 100 g. How many more grams did it hold?
37. 37.🧪 A paper bridge was tested three times. It held 210 g, 130 g and 110 g. What is the mean (average) load it held, in grams?
38. 38.🧪 Why repeat a test three times? (a) to use more paper (b) it looks busy (c) the first is wrong (d) to get reliable results
39. 39.🔢 To build and test a straw bridge, what comes right after “sketch three ideas”? (a) load it with coins (b) strengthen the weak part (c) choose and draw one (d) build it with straws
40. 40.🧪 Three prototype bridges were tested with the same method. Design A held 280 g, design B held 230 g and design C held 180 g. Which design was the strongest? (a) design C (b) design B (c) design A

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