Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 28 · 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 record every result? (a) poor testing (b) good testing
2. 2.🧪 What is a prototype? (a) the final product (b) an early test model (c) a broken part (d) a sales poster
3. 3.🔢 To build and test a straw bridge, what comes right after “load it with coins”? (a) read the challenge rules (b) strengthen the weak part (c) build it with straws (d) choose and draw one
4. 4.🧪 A paper bridge was tested three times. It held 380 g, 250 g and 360 g. What is the mean (average) load it held, in grams?
5. 5.🔍 Which is the odd one out? (a) guess, do not measure (b) use a new load each time (c) hide a failed test (d) repeat each test
6. 6.🧪 A paper bridge was tested three times. It held 360 g, 240 g and 360 g. What is the mean (average) load it held, in grams?
7. 7.True or false: to test it only once is poor testing. (a) True (b) False
8. 8.True or false: to guess, do not measure is poor testing. (a) True (b) False
9. 9.🧪 In a fair test, how many things do you change at a time? (a) all of them (b) one (c) two (d) none
10. 10.True or false: to guess, do not measure is good testing. (a) True (b) False
11. 11.🧪 The first prototype held 130 g. After the team improved it, the new prototype held 190 g. How many more grams did it hold?
12. 12.🔢 To build and test a straw bridge, which is the FIRST step? (a) choose and draw one (b) sketch three ideas (c) build it with straws (d) read the challenge rules
13. 13.🔍 Which is the odd one out? (a) guess, do not measure (b) change lots at once (c) use the same load (d) skip writing results
14. 14.🔍 Which is the odd one out? (a) use the same load (b) measure the same way (c) repeat each test (d) hide a failed test
15. 15.🔍 Which is the odd one out? (a) repeat each test (b) change only one thing (c) use the same load (d) test it only once
16. 16.🧪 Is it good or poor testing to hide a failed test? (a) poor testing (b) good testing
17. 17.🧪 Is it good or poor testing to use the same load? (a) poor testing (b) good testing
18. 18.🔢 To build and test a straw bridge, which comes first: “sketch three ideas” or “build it with straws”? (a) build it with straws (b) sketch three ideas
19. 19.🧪 Three prototype bridges were tested with the same method. Design A held 200 g, design B held 150 g and design C held 100 g. Which design was the weakest? (a) design B (b) design C (c) design A
20. 20.True or false: to repeat each test is poor testing. (a) True (b) False
21. 21.🧪 The first prototype held 220 g. After the team improved it, the new prototype held 270 g. How many more grams did it hold?
22. 22.🧪 Why do engineers make prototypes? (a) to test ideas cheaply (b) to decorate a room (c) to sell them at once (d) to avoid testing
23. 23.True or false: to repeat each test is good testing. (a) False (b) True
24. 24.🧪 Is it good or poor testing to measure the same way? (a) good testing (b) poor testing
25. 25.🔢 To build and test a straw bridge, what comes right after “choose and draw one”? (a) read the challenge rules (b) sketch three ideas (c) load it with coins (d) build it with straws
26. 26.🧪 Three prototype bridges were tested with the same method. Design A held 390 g, design B held 290 g and design C held 340 g. Which design was the weakest? (a) design A (b) design C (c) design B
27. 27.🧪 Is it good or poor testing to guess, do not measure? (a) good testing (b) poor testing
28. 28.🧪 Three prototype bridges were tested with the same method. Design A held 250 g, design B held 150 g and design C held 200 g. Which design was the strongest? (a) design A (b) design C (c) design B
29. 29.🧪 A paper bridge was tested three times. It held 200 g, 130 g and 240 g. What is the mean (average) load it held, in grams?
30. 30.🔍 Which is the odd one out? (a) use a new load each time (b) measure the same way (c) change lots at once (d) skip writing results
31. 31.🧪 The first prototype held 110 g. After the team improved it, the new prototype held 170 g. How many more grams did it hold?
32. 32.🧪 Is it good or poor testing to change only one thing? (a) good testing (b) poor testing
33. 33.🧪 Why repeat a test three times? (a) to use more paper (b) the first is wrong (c) to get reliable results (d) it looks busy
34. 34.🧪 Is it good or poor testing to repeat each test? (a) good testing (b) poor testing
35. 35.🔢 To build and test a straw bridge, which comes first: “strengthen the weak part” or “build it with straws”? (a) strengthen the weak part (b) build it with straws
36. 36.True or false: to measure the same way is poor testing. (a) True (b) False
37. 37.🧪 A paper bridge was tested three times. It held 300 g, 130 g and 170 g. What is the mean (average) load it held, in grams?
38. 38.True or false: to use a new load each time is good testing. (a) True (b) False
39. 39.🔢 To build and test a straw bridge, which comes first: “load it with coins” or “strengthen the weak part”? (a) strengthen the weak part (b) load it with coins
40. 40.🔢 To build and test a straw bridge, which comes first: “choose and draw one” or “load it with coins”? (a) load it with coins (b) choose and draw one

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