Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 952 · 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 use the same load is poor testing. (a) True (b) False
2. 2.🧪 A paper bridge was tested three times. It held 320 g, 250 g and 330 g. What is the mean (average) load it held, in grams?
3. 3.🧪 The first prototype held 170 g. After the team improved it, the new prototype held 210 g. How many more grams did it hold?
4. 4.True or false: to change only one thing is poor testing. (a) True (b) False
5. 5.🧪 Is it good or poor testing to record every result? (a) poor testing (b) good testing
6. 6.🧪 Three prototype bridges were tested with the same method. Design A held 310 g, design B held 210 g and design C held 260 g. Which design was the strongest? (a) design A (b) design B (c) design C
7. 7.🧪 Is it good or poor testing to change only one thing? (a) poor testing (b) good testing
8. 8.🔍 Which is the odd one out? (a) test it only once (b) guess, do not measure (c) change lots at once (d) measure the same way
9. 9.🧪 Is it good or poor testing to measure the same way? (a) good testing (b) poor testing
10. 10.🧪 What is a prototype? (a) an early test model (b) the final product (c) a broken part (d) a sales poster
11. 11.🧪 In a fair test, how many things do you change at a time? (a) none (b) two (c) all of them (d) one
12. 12.True or false: to use a new load each time is good testing. (a) True (b) False
13. 13.🔍 Which is the odd one out? (a) skip writing results (b) hide a failed test (c) change only one thing (d) test it only once
14. 14.True or false: to guess, do not measure is good testing. (a) True (b) False
15. 15.🧪 Is it good or poor testing to guess, do not measure? (a) good testing (b) poor testing
16. 16.🔍 Which is the odd one out? (a) repeat each test (b) change only one thing (c) use the same load (d) test it only once
17. 17.🧪 The first prototype held 280 g. After the team improved it, the new prototype held 390 g. How many more grams did it hold?
18. 18.🔍 Which is the odd one out? (a) measure the same way (b) change only one thing (c) change lots at once (d) repeat each test
19. 19.True or false: to use a new load each time is poor testing. (a) True (b) False
20. 20.True or false: to repeat each test is poor testing. (a) True (b) False
21. 21.🔢 To build and test a straw bridge, what comes right after “read the challenge rules”? (a) sketch three ideas (b) build it with straws (c) load it with coins (d) strengthen the weak part
22. 22.🔍 Which is the odd one out? (a) change lots at once (b) record every result (c) guess, do not measure (d) use a new load each time
23. 23.🧪 A paper bridge was tested three times. It held 340 g, 290 g and 240 g. What is the mean (average) load it held, in grams?
24. 24.True or false: to skip writing results is good testing. (a) True (b) False
25. 25.🧪 Three prototype bridges were tested with the same method. Design A held 170 g, design B held 120 g and design C held 220 g. Which design was the weakest? (a) design C (b) design A (c) design B
26. 26.🧪 Three prototype bridges were tested with the same method. Design A held 320 g, design B held 220 g and design C held 270 g. Which design was the weakest? (a) design B (b) design C (c) design A
27. 27.🔍 Which is the odd one out? (a) measure the same way (b) hide a failed test (c) repeat each test (d) use the same load
28. 28.🧪 The first prototype held 290 g. After the team improved it, the new prototype held 320 g. How many more grams did it hold?
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 250 g. Which design was the weakest? (a) design B (b) design C (c) design A
30. 30.🧪 Why repeat a test three times? (a) it looks busy (b) to get reliable results (c) to use more paper (d) the first is wrong
31. 31.🧪 The first prototype held 120 g. After the team improved it, the new prototype held 280 g. How many more grams did it hold?
32. 32.True or false: to measure the same way is poor testing. (a) False (b) True
33. 33.🧪 The first prototype held 210 g. After the team improved it, the new prototype held 340 g. How many more grams did it hold?
34. 34.🧪 Three prototype bridges were tested with the same method. Design A held 190 g, design B held 290 g and design C held 240 g. Which design was the strongest? (a) design C (b) design B (c) design A
35. 35.🧪 The first prototype held 80 g. After the team improved it, the new prototype held 200 g. How many more grams did it hold?
36. 36.🧪 Three prototype bridges were tested with the same method. Design A held 110 g, design B held 160 g and design C held 210 g. Which design was the strongest? (a) design A (b) design C (c) design B
37. 37.🧪 Is it good or poor testing to change lots at once? (a) good testing (b) poor testing
38. 38.🔍 Which is the odd one out? (a) use a new load each time (b) change only one thing (c) repeat each test (d) record every result
39. 39.🧪 Three prototype bridges were tested with the same method. Design A held 150 g, design B held 200 g and design C held 100 g. Which design was the strongest? (a) design A (b) design B (c) design C
40. 40.🔢 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

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