Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 196 · 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.🧪 Is it good or poor testing to measure the same way? (a) good testing (b) poor testing
2. 2.🔍 Which is the odd one out? (a) use the same load (b) test it only once (c) repeat each test (d) measure the same way
3. 3.🧪 In a fair test, how many things do you change at a time? (a) all of them (b) none (c) one (d) two
4. 4.🧪 Is it good or poor testing to use the same load? (a) poor testing (b) good testing
5. 5.🧪 Three prototype bridges were tested with the same method. Design A held 310 g, design B held 360 g and design C held 260 g. Which design was the weakest? (a) design A (b) design B (c) design C
6. 6.🧪 Why do engineers make prototypes? (a) to avoid testing (b) to sell them at once (c) to decorate a room (d) to test ideas cheaply
7. 7.🧪 Why repeat a test three times? (a) the first is wrong (b) to use more paper (c) it looks busy (d) to get reliable results
8. 8.🧪 The first prototype held 190 g. After the team improved it, the new prototype held 230 g. How many more grams did it hold?
9. 9.🧪 What is a prototype? (a) a broken part (b) a sales poster (c) an early test model (d) the final product
10. 10.🧪 Is it good or poor testing to record every result? (a) poor testing (b) good testing
11. 11.🧪 Is it good or poor testing to hide a failed test? (a) good testing (b) poor testing
12. 12.🔢 To build and test a straw bridge, which is the FIRST step? (a) build it with straws (b) strengthen the weak part (c) read the challenge rules (d) sketch three ideas
13. 13.🔍 Which is the odd one out? (a) measure the same way (b) change lots at once (c) use a new load each time (d) guess, do not measure
14. 14.🧪 Is it good or poor testing to test it only once? (a) poor testing (b) good testing
15. 15.🧪 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 C (b) design A (c) design B
16. 16.True or false: to guess, do not measure is good testing. (a) True (b) False
17. 17.🧪 Is it good or poor testing to change only one thing? (a) poor testing (b) good testing
18. 18.🔍 Which is the odd one out? (a) measure the same way (b) skip writing results (c) repeat each test (d) change only one thing
19. 19.🧪 The first prototype held 80 g. After the team improved it, the new prototype held 150 g. How many more grams did it hold?
20. 20.True or false: to test it only once is poor testing. (a) True (b) False
21. 21.True or false: to hide a failed test is poor testing. (a) True (b) False
22. 22.🔢 To build and test a straw bridge, which is the LAST step? (a) strengthen the weak part (b) read the challenge rules (c) choose and draw one (d) load it with coins
23. 23.🧪 The first prototype held 250 g. After the team improved it, the new prototype held 260 g. How many more grams did it hold?
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) use a new load each time (b) measure the same way (c) repeat each test (d) change only one thing
26. 26.🧪 The first prototype held 90 g. After the team improved it, the new prototype held 270 g. How many more grams did it hold?
27. 27.True or false: to change only one thing is poor testing. (a) True (b) False
28. 28.🔍 Which is the odd one out? (a) hide a failed test (b) skip writing results (c) repeat each test (d) test it only once
29. 29.🧪 The first prototype held 140 g. After the team improved it, the new prototype held 230 g. How many more grams did it hold?
30. 30.🧪 A paper bridge was tested three times. It held 370 g, 240 g and 290 g. What is the mean (average) load it held, in grams?
31. 31.True or false: to use a new load each time is good testing. (a) True (b) False
32. 32.True or false: to change only one thing is good testing. (a) True (b) False
33. 33.🧪 The first prototype held 120 g. After the team improved it, the new prototype held 180 g. How many more grams did it hold?
34. 34.🧪 Is it good or poor testing to skip writing results? (a) poor testing (b) good testing
35. 35.🧪 Is it good or poor testing to change lots at once? (a) good testing (b) poor testing
36. 36.🧪 A paper bridge was tested three times. It held 240 g, 150 g and 330 g. What is the mean (average) load it held, in grams?
37. 37.🧪 Is it good or poor testing to repeat each test? (a) poor testing (b) good testing
38. 38.True or false: to use the same load is good testing. (a) False (b) True
39. 39.🔢 To build and test a straw bridge, what comes right after “load it with coins”? (a) choose and draw one (b) read the challenge rules (c) sketch three ideas (d) strengthen the weak part
40. 40.🧪 A paper bridge was tested three times. It held 410 g, 270 g and 340 g. What is the mean (average) load it held, in grams?

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