Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 766 · 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) guess, do not measure (c) repeat each test (d) use the same load
2. 2.🔍 Which is the odd one out? (a) measure the same way (b) test it only once (c) repeat each test (d) use the same load
3. 3.🧪 A paper bridge was tested three times. It held 210 g, 140 g and 130 g. What is the mean (average) load it held, in grams?
4. 4.True or false: to repeat each test is poor testing. (a) False (b) True
5. 5.True or false: to guess, do not measure is good testing. (a) False (b) True
6. 6.🧪 Is it good or poor testing to use the same load? (a) good testing (b) poor testing
7. 7.True or false: to test it only once is good testing. (a) False (b) True
8. 8.🧪 Three prototype bridges were tested with the same method. Design A held 150 g, design B held 250 g and design C held 200 g. Which design was the weakest? (a) design B (b) design C (c) design A
9. 9.🔍 Which is the odd one out? (a) measure the same way (b) repeat each test (c) change lots at once (d) record every result
10. 10.🧪 A paper bridge was tested three times. It held 380 g, 300 g and 280 g. What is the mean (average) load it held, in grams?
11. 11.🧪 Is it good or poor testing to guess, do not measure? (a) good testing (b) poor testing
12. 12.True or false: to change only one thing is good testing. (a) True (b) False
13. 13.🧪 The first prototype held 150 g. After the team improved it, the new prototype held 350 g. How many more grams did it hold?
14. 14.🧪 Why repeat a test three times? (a) it looks busy (b) to get reliable results (c) to use more paper (d) the first is wrong
15. 15.🔍 Which is the odd one out? (a) guess, do not measure (b) hide a failed test (c) skip writing results (d) measure the same way
16. 16.🔍 Which is the odd one out? (a) use a new load each time (b) repeat each test (c) test it only once (d) skip writing results
17. 17.True or false: to measure the same way is poor testing. (a) True (b) False
18. 18.True or false: to use the same load is poor testing. (a) False (b) True
19. 19.🧪 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 weakest? (a) design B (b) design A (c) design C
20. 20.🧪 Is it good or poor testing to skip writing results? (a) good testing (b) poor testing
21. 21.True or false: to change only one thing is poor testing. (a) False (b) True
22. 22.🧪 A paper bridge was tested three times. It held 240 g, 60 g and 150 g. What is the mean (average) load it held, in grams?
23. 23.🧪 Why do engineers make prototypes? (a) to test ideas cheaply (b) to avoid testing (c) to decorate a room (d) to sell them at once
24. 24.🔢 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
25. 25.🔢 To build and test a straw bridge, what comes right after “read the challenge rules”? (a) build it with straws (b) choose and draw one (c) sketch three ideas (d) load it with coins
26. 26.🧪 What is a prototype? (a) a broken part (b) a sales poster (c) an early test model (d) the final product
27. 27.True or false: to measure the same way is good testing. (a) False (b) True
28. 28.🧪 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 B (b) design A (c) design C
29. 29.🧪 A paper bridge was tested three times. It held 370 g, 290 g and 330 g. What is the mean (average) load it held, in grams?
30. 30.🔍 Which is the odd one out? (a) record every result (b) use the same load (c) skip writing results (d) repeat each test
31. 31.🔢 To build and test a straw bridge, which comes first: “choose and draw one” or “sketch three ideas”? (a) sketch three ideas (b) choose and draw one
32. 32.🧪 The first prototype held 290 g. After the team improved it, the new prototype held 410 g. How many more grams did it hold?
33. 33.🔢 To build and test a straw bridge, which is the FIRST step? (a) sketch three ideas (b) load it with coins (c) read the challenge rules (d) choose and draw one
34. 34.True or false: to record every result is good testing. (a) False (b) True
35. 35.🧪 Three prototype bridges were tested with the same method. Design A held 260 g, design B held 160 g and design C held 210 g. Which design was the strongest? (a) design C (b) design B (c) design A
36. 36.🧪 In a fair test, how many things do you change at a time? (a) two (b) none (c) all of them (d) one
37. 37.🔍 Which is the odd one out? (a) change lots at once (b) use the same load (c) hide a failed test (d) guess, do not measure
38. 38.🔢 To build and test a straw bridge, which comes first: “sketch three ideas” or “read the challenge rules”? (a) read the challenge rules (b) sketch three ideas
39. 39.🧪 A paper bridge was tested three times. It held 300 g, 240 g and 330 g. What is the mean (average) load it held, in grams?
40. 40.🔢 To build and test a straw bridge, what comes right after “build it with straws”? (a) choose and draw one (b) load it with coins (c) strengthen the weak part (d) read the challenge rules

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