Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 919 · 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 340 g, design B held 240 g and design C held 290 g. Which design was the weakest? (a) design C (b) design B (c) design A
2. 2.🔍 Which is the odd one out? (a) change only one thing (b) test it only once (c) skip writing results (d) hide a failed test
3. 3.🧪 Is it good or poor testing to record every result? (a) good testing (b) poor testing
4. 4.🧪 A paper bridge was tested three times. It held 440 g, 340 g and 240 g. What is the mean (average) load it held, in grams?
5. 5.True or false: to change lots at once is poor testing. (a) False (b) True
6. 6.🧪 Is it good or poor testing to hide a failed test? (a) poor testing (b) good testing
7. 7.🧪 Why do engineers make prototypes? (a) to decorate a room (b) to avoid testing (c) to sell them at once (d) to test ideas cheaply
8. 8.🧪 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 strongest? (a) design A (b) design C (c) design B
9. 9.🔢 To build and test a straw bridge, which comes first: “load it with coins” or “build it with straws”? (a) load it with coins (b) build it with straws
10. 10.🧪 What is a prototype? (a) a broken part (b) the final product (c) a sales poster (d) an early test model
11. 11.🧪 The first prototype held 90 g. After the team improved it, the new prototype held 210 g. How many more grams did it hold?
12. 12.True or false: to guess, do not measure is poor testing. (a) False (b) True
13. 13.🔍 Which is the odd one out? (a) test it only once (b) guess, do not measure (c) repeat each test (d) use a new load each time
14. 14.🧪 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
15. 15.🔍 Which is the odd one out? (a) record every result (b) measure the same way (c) test it only once (d) change only one thing
16. 16.🧪 The first prototype held 190 g. After the team improved it, the new prototype held 390 g. How many more grams did it hold?
17. 17.🧪 Is it good or poor testing to change only one thing? (a) good testing (b) poor testing
18. 18.🔢 To build and test a straw bridge, what comes right after “choose and draw one”? (a) strengthen the weak part (b) read the challenge rules (c) sketch three ideas (d) build it with straws
19. 19.🔢 To build and test a straw bridge, which is the LAST step? (a) read the challenge rules (b) choose and draw one (c) strengthen the weak part (d) load it with coins
20. 20.🧪 Is it good or poor testing to guess, do not measure? (a) poor testing (b) good testing
21. 21.🧪 Is it good or poor testing to use a new load each time? (a) poor testing (b) good testing
22. 22.🔢 To build and test a straw bridge, which comes first: “read the challenge rules” or “build it with straws”? (a) build it with straws (b) read the challenge rules
23. 23.🧪 A paper bridge was tested three times. It held 210 g, 150 g and 270 g. What is the mean (average) load it held, in grams?
24. 24.🔢 To build and test a straw bridge, what comes right after “build it with straws”? (a) read the challenge rules (b) sketch three ideas (c) load it with coins (d) choose and draw one
25. 25.🔢 To build and test a straw bridge, which is the FIRST step? (a) read the challenge rules (b) strengthen the weak part (c) load it with coins (d) choose and draw one
26. 26.🧪 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 B (b) design C (c) design A
27. 27.🧪 A paper bridge was tested three times. It held 250 g, 150 g and 290 g. What is the mean (average) load it held, in grams?
28. 28.True or false: to skip writing results is poor testing. (a) True (b) False
29. 29.🔍 Which is the odd one out? (a) use the same load (b) hide a failed test (c) measure the same way (d) record every result
30. 30.🔍 Which is the odd one out? (a) change only one thing (b) record every result (c) measure the same way (d) change lots at once
31. 31.🧪 In a fair test, how many things do you change at a time? (a) all of them (b) one (c) none (d) two
32. 32.True or false: to change lots at once is good testing. (a) True (b) False
33. 33.🧪 Is it good or poor testing to repeat each test? (a) good testing (b) poor testing
34. 34.🧪 Three prototype bridges were tested with the same method. Design A held 210 g, design B held 160 g and design C held 110 g. Which design was the weakest? (a) design B (b) design C (c) design A
35. 35.🧪 Three prototype bridges were tested with the same method. Design A held 280 g, design B held 330 g and design C held 380 g. Which design was the strongest? (a) design A (b) design B (c) design C
36. 36.🔢 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
37. 37.🧪 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 C (b) design B (c) design A
38. 38.🔢 To build and test a straw bridge, which comes first: “build it with straws” or “read the challenge rules”? (a) read the challenge rules (b) build it with straws
39. 39.True or false: to use the same load is poor testing. (a) False (b) True
40. 40.🧪 The first prototype held 180 g. After the team improved it, the new prototype held 260 g. How many more grams did it hold?

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