Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 29 · 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) load it with coins (b) read the challenge rules (c) strengthen the weak part (d) build it with straws
2. 2.🧪 Is it good or poor testing to guess, do not measure? (a) poor testing (b) good testing
3. 3.🔍 Which is the odd one out? (a) hide a failed test (b) repeat each test (c) use the same load (d) record every result
4. 4.🧪 Is it good or poor testing to use the same load? (a) poor testing (b) good testing
5. 5.🧪 Why repeat a test three times? (a) the first is wrong (b) to use more paper (c) it looks busy (d) to get reliable results
6. 6.True or false: to skip writing results is good testing. (a) False (b) True
7. 7.🧪 The first prototype held 140 g. After the team improved it, the new prototype held 190 g. How many more grams did it hold?
8. 8.True or false: to record every result is poor testing. (a) True (b) False
9. 9.True or false: to test it only once is poor testing. (a) False (b) True
10. 10.True or false: to hide a failed test is good testing. (a) False (b) True
11. 11.True or false: to hide a failed test is poor testing. (a) False (b) True
12. 12.🧪 Three prototype bridges were tested with the same method. Design A held 240 g, design B held 340 g and design C held 290 g. Which design was the weakest? (a) design A (b) design B (c) design C
13. 13.True or false: to change lots at once is poor testing. (a) True (b) False
14. 14.🧪 Is it good or poor testing to measure the same way? (a) poor testing (b) good testing
15. 15.🧪 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
16. 16.🧪 A paper bridge was tested three times. It held 250 g, 150 g and 200 g. What is the mean (average) load it held, in grams?
17. 17.🧪 In a fair test, how many things do you change at a time? (a) all of them (b) two (c) one (d) none
18. 18.🧪 Three prototype bridges were tested with the same method. Design A held 180 g, design B held 130 g and design C held 230 g. Which design was the weakest? (a) design B (b) design C (c) design A
19. 19.🔍 Which is the odd one out? (a) repeat each test (b) use a new load each time (c) change lots at once (d) guess, do not measure
20. 20.🧪 Three prototype bridges were tested with the same method. Design A held 370 g, design B held 270 g and design C held 320 g. Which design was the weakest? (a) design A (b) design B (c) design C
21. 21.🧪 Is it good or poor testing to test it only once? (a) poor testing (b) good testing
22. 22.🔢 To build and test a straw bridge, which comes first: “strengthen the weak part” or “choose and draw one”? (a) choose and draw one (b) strengthen the weak part
23. 23.True or false: to change only one thing is good testing. (a) False (b) True
24. 24.🧪 A paper bridge was tested three times. It held 190 g, 150 g and 110 g. What is the mean (average) load it held, in grams?
25. 25.🧪 Is it good or poor testing to hide a failed test? (a) poor testing (b) good testing
26. 26.🔢 To build and test a straw bridge, which comes first: “build it with straws” or “choose and draw one”? (a) choose and draw one (b) build it with straws
27. 27.🧪 Three prototype bridges were tested with the same method. Design A held 250 g, design B held 200 g and design C held 150 g. Which design was the strongest? (a) design C (b) design B (c) design A
28. 28.True or false: to record every result is good testing. (a) False (b) True
29. 29.🔍 Which is the odd one out? (a) change only one thing (b) measure the same way (c) record every result (d) use a new load each time
30. 30.🔍 Which is the odd one out? (a) record every result (b) change only one thing (c) guess, do not measure (d) repeat each test
31. 31.🧪 Is it good or poor testing to change only one thing? (a) good testing (b) poor testing
32. 32.🔢 To build and test a straw bridge, what comes right after “read the challenge rules”? (a) choose and draw one (b) build it with straws (c) sketch three ideas (d) strengthen the weak part
33. 33.🧪 The first prototype held 80 g. After the team improved it, the new prototype held 280 g. How many more grams did it hold?
34. 34.🧪 Three prototype bridges were tested with the same method. Design A held 250 g, design B held 300 g and design C held 350 g. Which design was the weakest? (a) design C (b) design A (c) design B
35. 35.🧪 The first prototype held 70 g. After the team improved it, the new prototype held 190 g. How many more grams did it hold?
36. 36.🔍 Which is the odd one out? (a) skip writing results (b) repeat each test (c) change only one thing (d) measure the same way
37. 37.🧪 What is a prototype? (a) an early test model (b) a sales poster (c) a broken part (d) the final product
38. 38.True or false: to measure the same way is poor testing. (a) False (b) True
39. 39.🧪 A paper bridge was tested three times. It held 390 g, 280 g and 290 g. What is the mean (average) load it held, in grams?
40. 40.True or false: to use a new load each time is good testing. (a) True (b) False

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