Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 498 · 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.🧪 Why repeat a test three times? (a) to get reliable results (b) the first is wrong (c) it looks busy (d) to use more paper
2. 2.🔢 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) build it with straws (d) strengthen the weak part
3. 3.🧪 The first prototype held 120 g. After the team improved it, the new prototype held 320 g. How many more grams did it hold?
4. 4.🧪 The first prototype held 60 g. After the team improved it, the new prototype held 220 g. How many more grams did it hold?
5. 5.🧪 The first prototype held 240 g. After the team improved it, the new prototype held 270 g. How many more grams did it hold?
6. 6.🧪 Is it good or poor testing to repeat each test? (a) good testing (b) poor testing
7. 7.True or false: to change only one thing is poor testing. (a) False (b) True
8. 8.🧪 A paper bridge was tested three times. It held 210 g, 140 g and 250 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 170 g and design C held 220 g. Which design was the weakest? (a) design C (b) design A (c) design B
10. 10.True or false: to measure the same way is poor testing. (a) True (b) False
11. 11.🔍 Which is the odd one out? (a) hide a failed test (b) guess, do not measure (c) test it only once (d) measure the same way
12. 12.🧪 A paper bridge was tested three times. It held 280 g, 180 g and 110 g. What is the mean (average) load it held, in grams?
13. 13.🧪 Is it good or poor testing to change only one thing? (a) good testing (b) poor testing
14. 14.🔢 To build and test a straw bridge, what comes right after “choose and draw one”? (a) read the challenge rules (b) build it with straws (c) strengthen the weak part (d) load it with coins
15. 15.🧪 In a fair test, how many things do you change at a time? (a) one (b) all of them (c) two (d) none
16. 16.🧪 The first prototype held 290 g. After the team improved it, the new prototype held 350 g. How many more grams did it hold?
17. 17.🔍 Which is the odd one out? (a) repeat each test (b) measure the same way (c) change lots at once (d) change only one thing
18. 18.🔢 To build and test a straw bridge, which comes first: “sketch three ideas” or “strengthen the weak part”? (a) sketch three ideas (b) strengthen the weak part
19. 19.🧪 What is a prototype? (a) a broken part (b) a sales poster (c) the final product (d) an early test model
20. 20.🧪 Is it good or poor testing to measure the same way? (a) good testing (b) poor testing
21. 21.🔍 Which is the odd one out? (a) change only one thing (b) measure the same way (c) guess, do not measure (d) record every result
22. 22.🧪 Why do engineers make prototypes? (a) to sell them at once (b) to decorate a room (c) to avoid testing (d) to test ideas cheaply
23. 23.🔢 To build and test a straw bridge, which is the LAST step? (a) choose and draw one (b) strengthen the weak part (c) read the challenge rules (d) build it with straws
24. 24.🧪 The first prototype held 110 g. After the team improved it, the new prototype held 160 g. How many more grams did it hold?
25. 25.True or false: to skip writing results is good testing. (a) False (b) True
26. 26.🧪 Is it good or poor testing to skip writing results? (a) poor testing (b) good testing
27. 27.🧪 A paper bridge was tested three times. It held 330 g, 250 g and 260 g. What is the mean (average) load it held, in grams?
28. 28.True or false: to hide a failed test is poor testing. (a) False (b) True
29. 29.🧪 A paper bridge was tested three times. It held 220 g, 190 g and 160 g. What is the mean (average) load it held, in grams?
30. 30.🔢 To build and test a straw bridge, which comes first: “load it with coins” or “build it with straws”? (a) build it with straws (b) load it with coins
31. 31.🔍 Which is the odd one out? (a) hide a failed test (b) use a new load each time (c) use the same load (d) guess, do not measure
32. 32.True or false: to record every result is good testing. (a) True (b) False
33. 33.🧪 A paper bridge was tested three times. It held 420 g, 310 g and 260 g. What is the mean (average) load it held, in grams?
34. 34.🧪 Is it good or poor testing to test it only once? (a) good testing (b) poor testing
35. 35.🧪 A paper bridge was tested three times. It held 280 g, 210 g and 200 g. What is the mean (average) load it held, in grams?
36. 36.True or false: to record every result is poor testing. (a) True (b) False
37. 37.🧪 A paper bridge was tested three times. It held 180 g, 100 g and 230 g. What is the mean (average) load it held, in grams?
38. 38.True or false: to test it only once is good testing. (a) False (b) True
39. 39.🧪 A paper bridge was tested three times. It held 330 g, 220 g and 350 g. What is the mean (average) load it held, in grams?
40. 40.🧪 Three prototype bridges were tested with the same method. Design A held 270 g, design B held 320 g and design C held 220 g. Which design was the weakest? (a) design B (b) design A (c) design C

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