Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 744 · 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.🧪 Why repeat a test three times? (a) to get reliable results (b) the first is wrong (c) to use more paper (d) it looks busy
2. 2.🔢 To build and test a straw bridge, what comes right after “sketch three ideas”? (a) choose and draw one (b) build it with straws (c) read the challenge rules (d) load it with coins
3. 3.🧪 A paper bridge was tested three times. It held 330 g, 180 g and 300 g. What is the mean (average) load it held, in grams?
4. 4.🧪 A paper bridge was tested three times. It held 310 g, 230 g and 330 g. What is the mean (average) load it held, in grams?
5. 5.🔍 Which is the odd one out? (a) repeat each test (b) record every result (c) change lots at once (d) use the same load
6. 6.🔍 Which is the odd one out? (a) measure the same way (b) repeat each test (c) use the same load (d) guess, do not measure
7. 7.🔢 To build and test a straw bridge, which comes first: “load it with coins” or “choose and draw one”? (a) choose and draw one (b) load it with coins
8. 8.🧪 Three prototype bridges were tested with the same method. Design A held 260 g, design B held 210 g and design C held 310 g. Which design was the weakest? (a) design C (b) design A (c) design B
9. 9.🔍 Which is the odd one out? (a) change lots at once (b) change only one thing (c) use a new load each time (d) skip writing results
10. 10.🧪 Is it good or poor testing to change only one thing? (a) poor testing (b) good testing
11. 11.🔍 Which is the odd one out? (a) record every result (b) use a new load each time (c) skip writing results (d) hide a failed test
12. 12.True or false: to repeat each test is good testing. (a) False (b) True
13. 13.🧪 Why do engineers make prototypes? (a) to test ideas cheaply (b) to sell them at once (c) to decorate a room (d) to avoid testing
14. 14.🔢 To build and test a straw bridge, which comes first: “sketch three ideas” or “load it with coins”? (a) sketch three ideas (b) load it with coins
15. 15.True or false: to measure the same way is good testing. (a) True (b) False
16. 16.🧪 Is it good or poor testing to measure the same way? (a) good testing (b) poor testing
17. 17.🧪 A paper bridge was tested three times. It held 280 g, 210 g and 260 g. What is the mean (average) load it held, in grams?
18. 18.🧪 The first prototype held 250 g. After the team improved it, the new prototype held 300 g. How many more grams did it hold?
19. 19.🧪 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 weakest? (a) design B (b) design C (c) design A
20. 20.True or false: to hide a failed test is good testing. (a) True (b) False
21. 21.True or false: to skip writing results is poor testing. (a) True (b) False
22. 22.🔢 To build and test a straw bridge, which is the LAST step? (a) build it with straws (b) strengthen the weak part (c) sketch three ideas (d) load it with coins
23. 23.True or false: to test it only once is good testing. (a) False (b) True
24. 24.🧪 The first prototype held 240 g. After the team improved it, the new prototype held 310 g. How many more grams did it hold?
25. 25.True or false: to use a new load each time is good testing. (a) False (b) True
26. 26.True or false: to change only one thing is good testing. (a) False (b) True
27. 27.True or false: to guess, do not measure is good testing. (a) True (b) False
28. 28.🧪 Is it good or poor testing to use the same load? (a) poor testing (b) good testing
29. 29.🧪 A paper bridge was tested three times. It held 360 g, 270 g and 360 g. What is the mean (average) load it held, in grams?
30. 30.🧪 Is it good or poor testing to hide a failed test? (a) good testing (b) poor testing
31. 31.🔢 To build and test a straw bridge, which comes first: “choose and draw one” or “read the challenge rules”? (a) choose and draw one (b) read the challenge rules
32. 32.🧪 Three prototype bridges were tested with the same method. Design A held 120 g, design B held 220 g and design C held 170 g. Which design was the weakest? (a) design B (b) design A (c) design C
33. 33.🧪 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 weakest? (a) design B (b) design A (c) design C
34. 34.🧪 A paper bridge was tested three times. It held 320 g, 200 g and 200 g. What is the mean (average) load it held, in grams?
35. 35.🔢 To build and test a straw bridge, which comes first: “read the challenge rules” or “load it with coins”? (a) load it with coins (b) read the challenge rules
36. 36.🧪 The first prototype held 250 g. After the team improved it, the new prototype held 290 g. How many more grams did it hold?
37. 37.🧪 Is it good or poor testing to record every result? (a) poor testing (b) good testing
38. 38.🔢 To build and test a straw bridge, what comes right after “choose and draw one”? (a) build it with straws (b) sketch three ideas (c) read the challenge rules (d) load it with coins
39. 39.🧪 A paper bridge was tested three times. It held 340 g, 260 g and 180 g. What is the mean (average) load it held, in grams?
40. 40.🧪 In a fair test, how many things do you change at a time? (a) none (b) all of them (c) one (d) two

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