Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 262 · 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.🔍 Which is the odd one out? (a) change only one thing (b) change lots at once (c) repeat each test (d) record every result
2. 2.🧪 A paper bridge was tested three times. It held 410 g, 330 g and 310 g. What is the mean (average) load it held, in grams?
3. 3.True or false: to guess, do not measure is good testing. (a) True (b) False
4. 4.🔍 Which is the odd one out? (a) use the same load (b) change lots at once (c) test it only once (d) skip writing results
5. 5.🧪 Why do engineers make prototypes? (a) to decorate a room (b) to test ideas cheaply (c) to sell them at once (d) to avoid testing
6. 6.🔍 Which is the odd one out? (a) use the same load (b) use a new load each time (c) measure the same way (d) repeat each test
7. 7.True or false: to record every result is good testing. (a) False (b) True
8. 8.🧪 A paper bridge was tested three times. It held 280 g, 220 g and 250 g. What is the mean (average) load it held, in grams?
9. 9.🧪 Is it good or poor testing to change only one thing? (a) good testing (b) poor testing
10. 10.🔢 To build and test a straw bridge, which comes first: “choose and draw one” or “read the challenge rules”? (a) read the challenge rules (b) choose and draw one
11. 11.True or false: to use the same load is poor testing. (a) False (b) True
12. 12.True or false: to measure the same way is good testing. (a) True (b) False
13. 13.True or false: to hide a failed test is poor testing. (a) True (b) False
14. 14.🧪 What is a prototype? (a) the final product (b) an early test model (c) a broken part (d) a sales poster
15. 15.🧪 A paper bridge was tested three times. It held 400 g, 320 g and 270 g. What is the mean (average) load it held, in grams?
16. 16.🔢 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
17. 17.True or false: to test it only once is good testing. (a) False (b) True
18. 18.🔢 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) load it with coins (d) read the challenge rules
19. 19.🧪 Three prototype bridges were tested with the same method. Design A held 310 g, design B held 260 g and design C held 210 g. Which design was the weakest? (a) design B (b) design C (c) design A
20. 20.🔍 Which is the odd one out? (a) test it only once (b) change only one thing (c) repeat each test (d) use the same load
21. 21.🧪 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 A (b) design C (c) design B
22. 22.True or false: to hide a failed test is good testing. (a) False (b) True
23. 23.True or false: to repeat each test is good testing. (a) True (b) False
24. 24.🧪 The first prototype held 90 g. After the team improved it, the new prototype held 190 g. How many more grams did it hold?
25. 25.True or false: to repeat each test is poor testing. (a) False (b) True
26. 26.True or false: to change only one thing is poor testing. (a) True (b) False
27. 27.🔢 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
28. 28.🔍 Which is the odd one out? (a) use a new load each time (b) change lots at once (c) test it only once (d) repeat each test
29. 29.🧪 A paper bridge was tested three times. It held 250 g, 140 g and 210 g. What is the mean (average) load it held, in grams?
30. 30.🧪 A paper bridge was tested three times. It held 240 g, 160 g and 170 g. What is the mean (average) load it held, in grams?
31. 31.True or false: to measure the same way is poor testing. (a) True (b) False
32. 32.🧪 Is it good or poor testing to change lots at once? (a) good testing (b) poor testing
33. 33.True or false: to change only one thing is good testing. (a) True (b) False
34. 34.🧪 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 C (c) design A
35. 35.🔢 To build and test a straw bridge, which is the LAST step? (a) strengthen the weak part (b) sketch three ideas (c) choose and draw one (d) read the challenge rules
36. 36.True or false: to use a new load each time is good testing. (a) True (b) False
37. 37.True or false: to record every result is poor testing. (a) False (b) True
38. 38.🔍 Which is the odd one out? (a) repeat each test (b) use the same load (c) measure the same way (d) guess, do not measure
39. 39.🧪 Why repeat a test three times? (a) to use more paper (b) to get reliable results (c) the first is wrong (d) it looks busy
40. 40.🔢 To build and test a straw bridge, which comes first: “load it with coins” or “sketch three ideas”? (a) load it with coins (b) sketch three ideas

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