Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 503 · 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 hide a failed test is good testing. (a) True (b) False
2. 2.🧪 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
3. 3.🧪 A paper bridge was tested three times. It held 210 g, 140 g and 160 g. What is the mean (average) load it held, in grams?
4. 4.True or false: to measure the same way is good testing. (a) True (b) False
5. 5.🧪 The first prototype held 100 g. After the team improved it, the new prototype held 180 g. How many more grams did it hold?
6. 6.🧪 A paper bridge was tested three times. It held 420 g, 320 g and 220 g. What is the mean (average) load it held, in grams?
7. 7.🧪 Three prototype bridges were tested with the same method. Design A held 300 g, design B held 200 g and design C held 250 g. Which design was the weakest? (a) design B (b) design C (c) design A
8. 8.🧪 Three prototype bridges were tested with the same method. Design A held 200 g, design B held 250 g and design C held 300 g. Which design was the strongest? (a) design C (b) design A (c) design B
9. 9.🧪 A paper bridge was tested three times. It held 340 g, 160 g and 250 g. What is the mean (average) load it held, in grams?
10. 10.🔍 Which is the odd one out? (a) repeat each test (b) record every result (c) use the same load (d) use a new load each time
11. 11.🔍 Which is the odd one out? (a) use a new load each time (b) use the same load (c) test it only once (d) guess, do not measure
12. 12.🔍 Which is the odd one out? (a) test it only once (b) guess, do not measure (c) skip writing results (d) repeat each test
13. 13.🧪 A paper bridge was tested three times. It held 450 g, 260 g and 340 g. What is the mean (average) load it held, in grams?
14. 14.🧪 Is it good or poor testing to use a new load each time? (a) good testing (b) poor testing
15. 15.🧪 Is it good or poor testing to test it only once? (a) poor testing (b) good testing
16. 16.🔍 Which is the odd one out? (a) change only one thing (b) measure the same way (c) test it only once (d) use the same load
17. 17.🧪 What is a prototype? (a) a sales poster (b) an early test model (c) a broken part (d) the final product
18. 18.🧪 A paper bridge was tested three times. It held 390 g, 320 g and 340 g. What is the mean (average) load it held, in grams?
19. 19.True or false: to skip writing results is good testing. (a) False (b) True
20. 20.🧪 Is it good or poor testing to use the same load? (a) poor testing (b) good testing
21. 21.🧪 The first prototype held 210 g. After the team improved it, the new prototype held 260 g. How many more grams did it hold?
22. 22.🔍 Which is the odd one out? (a) repeat each test (b) use the same load (c) skip writing results (d) record every result
23. 23.🧪 Is it good or poor testing to record every result? (a) poor testing (b) good testing
24. 24.🔢 To build and test a straw bridge, which is the FIRST step? (a) load it with coins (b) build it with straws (c) read the challenge rules (d) strengthen the weak part
25. 25.True or false: to test it only once is good testing. (a) True (b) False
26. 26.🧪 A paper bridge was tested three times. It held 210 g, 110 g and 220 g. What is the mean (average) load it held, in grams?
27. 27.🧪 Three prototype bridges were tested with the same method. Design A held 290 g, design B held 340 g and design C held 390 g. Which design was the weakest? (a) design C (b) design B (c) design A
28. 28.🧪 In a fair test, how many things do you change at a time? (a) two (b) none (c) all of them (d) one
29. 29.True or false: to guess, do not measure is poor testing. (a) False (b) True
30. 30.🔢 To build and test a straw bridge, what comes right after “read the challenge rules”? (a) choose and draw one (b) load it with coins (c) sketch three ideas (d) build it with straws
31. 31.True or false: to change lots at once is poor testing. (a) True (b) False
32. 32.🔍 Which is the odd one out? (a) repeat each test (b) use the same load (c) measure the same way (d) change lots at once
33. 33.🧪 Is it good or poor testing to change only one thing? (a) good testing (b) poor testing
34. 34.🔍 Which is the odd one out? (a) test it only once (b) measure the same way (c) use a new load each time (d) skip writing results
35. 35.🧪 Three prototype bridges were tested with the same method. Design A held 270 g, design B held 370 g and design C held 320 g. Which design was the strongest? (a) design B (b) design A (c) design C
36. 36.🧪 Three prototype bridges were tested with the same method. Design A held 150 g, design B held 200 g and design C held 250 g. Which design was the strongest? (a) design A (b) design C (c) design B
37. 37.🧪 A paper bridge was tested three times. It held 210 g, 70 g and 200 g. What is the mean (average) load it held, in grams?
38. 38.True or false: to change only one thing is poor testing. (a) False (b) True
39. 39.True or false: to record every result is poor testing. (a) False (b) True
40. 40.🧪 Three prototype bridges were tested with the same method. Design A held 130 g, design B held 180 g and design C held 230 g. Which design was the weakest? (a) design B (b) design A (c) design C

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