Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 995 · 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.🔢 To build and test a straw bridge, which is the FIRST step? (a) read the challenge rules (b) choose and draw one (c) build it with straws (d) load it with coins
2. 2.True or false: to use a new load each time is poor testing. (a) False (b) True
3. 3.True or false: to hide a failed test is good testing. (a) False (b) True
4. 4.True or false: to guess, do not measure is good testing. (a) False (b) True
5. 5.True or false: to record every result is good testing. (a) True (b) False
6. 6.🔍 Which is the odd one out? (a) skip writing results (b) test it only once (c) measure the same way (d) guess, do not measure
7. 7.🔍 Which is the odd one out? (a) repeat each test (b) skip writing results (c) record every result (d) change only one thing
8. 8.🔍 Which is the odd one out? (a) repeat each test (b) measure the same way (c) use a new load each time (d) use the same load
9. 9.🧪 The first prototype held 90 g. After the team improved it, the new prototype held 160 g. How many more grams did it hold?
10. 10.🧪 Is it good or poor testing to record every result? (a) poor testing (b) good testing
11. 11.🧪 The first prototype held 280 g. After the team improved it, the new prototype held 290 g. How many more grams did it hold?
12. 12.🔍 Which is the odd one out? (a) hide a failed test (b) repeat each test (c) use the same load (d) change only one thing
13. 13.🧪 Is it good or poor testing to change only one thing? (a) poor testing (b) good testing
14. 14.🧪 A paper bridge was tested three times. It held 250 g, 210 g and 290 g. What is the mean (average) load it held, in grams?
15. 15.🧪 What is a prototype? (a) a broken part (b) a sales poster (c) the final product (d) an early test model
16. 16.🔢 To build and test a straw bridge, what comes right after “sketch three ideas”? (a) read the challenge rules (b) load it with coins (c) strengthen the weak part (d) choose and draw one
17. 17.🧪 Is it good or poor testing to use the same load? (a) poor testing (b) good testing
18. 18.🧪 The first prototype held 110 g. After the team improved it, the new prototype held 270 g. How many more grams did it hold?
19. 19.🧪 A paper bridge was tested three times. It held 280 g, 160 g and 340 g. What is the mean (average) load it held, in grams?
20. 20.🧪 Why repeat a test three times? (a) the first is wrong (b) to use more paper (c) to get reliable results (d) it looks busy
21. 21.🧪 Why do engineers make prototypes? (a) to sell them at once (b) to avoid testing (c) to decorate a room (d) to test ideas cheaply
22. 22.🔢 To build and test a straw bridge, what comes right after “choose and draw one”? (a) sketch three ideas (b) strengthen the weak part (c) build it with straws (d) load it with coins
23. 23.🧪 Three prototype bridges were tested with the same method. Design A held 170 g, design B held 220 g and design C held 120 g. Which design was the weakest? (a) design A (b) design C (c) design B
24. 24.True or false: to change lots at once is good testing. (a) False (b) True
25. 25.🔍 Which is the odd one out? (a) record every result (b) repeat each test (c) change lots at once (d) use the same load
26. 26.🧪 Three prototype bridges were tested with the same method. Design A held 280 g, design B held 230 g and design C held 180 g. Which design was the strongest? (a) design C (b) design A (c) design B
27. 27.🧪 Is it good or poor testing to test it only once? (a) good testing (b) poor testing
28. 28.🧪 A paper bridge was tested three times. It held 300 g, 230 g and 280 g. What is the mean (average) load it held, in grams?
29. 29.🔍 Which is the odd one out? (a) repeat each test (b) use a new load each time (c) test it only once (d) change lots at once
30. 30.🧪 Is it good or poor testing to hide a failed test? (a) good testing (b) poor testing
31. 31.🧪 A paper bridge was tested three times. It held 250 g, 80 g and 210 g. What is the mean (average) load it held, in grams?
32. 32.🧪 The first prototype held 50 g. After the team improved it, the new prototype held 110 g. How many more grams did it hold?
33. 33.True or false: to change only one thing is good testing. (a) False (b) True
34. 34.🧪 In a fair test, how many things do you change at a time? (a) two (b) all of them (c) none (d) one
35. 35.🧪 A paper bridge was tested three times. It held 170 g, 160 g and 180 g. What is the mean (average) load it held, in grams?
36. 36.True or false: to change only one thing is poor testing. (a) False (b) True
37. 37.True or false: to hide a failed test is poor testing. (a) False (b) True
38. 38.True or false: to record every result is poor testing. (a) False (b) True
39. 39.🧪 A paper bridge was tested three times. It held 290 g, 280 g and 300 g. What is the mean (average) load it held, in grams?
40. 40.🧪 A paper bridge was tested three times. It held 230 g, 130 g and 210 g. What is the mean (average) load it held, in grams?

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