Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 270 · 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.🧪 A paper bridge was tested three times. It held 270 g, 240 g and 300 g. What is the mean (average) load it held, in grams?
2. 2.🔢 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) strengthen the weak part
3. 3.🔢 To build and test a straw bridge, which is the LAST step? (a) load it with coins (b) build it with straws (c) strengthen the weak part (d) choose and draw one
4. 4.🧪 Is it good or poor testing to use a new load each time? (a) good testing (b) poor testing
5. 5.🧪 What is a prototype? (a) a broken part (b) the final product (c) an early test model (d) a sales poster
6. 6.True or false: to skip writing results is poor testing. (a) False (b) True
7. 7.🔍 Which is the odd one out? (a) change lots at once (b) repeat each test (c) use the same load (d) change only one thing
8. 8.🔍 Which is the odd one out? (a) skip writing results (b) hide a failed test (c) test it only once (d) use the same load
9. 9.🧪 Is it good or poor testing to record every result? (a) poor testing (b) good testing
10. 10.🧪 Is it good or poor testing to repeat each test? (a) poor testing (b) good testing
11. 11.🔍 Which is the odd one out? (a) change only one thing (b) repeat each test (c) use the same load (d) skip writing results
12. 12.🧪 Three prototype bridges were tested with the same method. Design A held 230 g, design B held 280 g and design C held 180 g. Which design was the strongest? (a) design C (b) design A (c) design B
13. 13.🧪 Is it good or poor testing to measure the same way? (a) poor testing (b) good testing
14. 14.🧪 Why do engineers make prototypes? (a) to avoid testing (b) to decorate a room (c) to sell them at once (d) to test ideas cheaply
15. 15.🔢 To build and test a straw bridge, which is the FIRST step? (a) load it with coins (b) strengthen the weak part (c) choose and draw one (d) read the challenge rules
16. 16.🧪 Is it good or poor testing to change lots at once? (a) good testing (b) poor testing
17. 17.🧪 Is it good or poor testing to hide a failed test? (a) good testing (b) poor testing
18. 18.🧪 A paper bridge was tested three times. It held 200 g, 50 g and 200 g. What is the mean (average) load it held, in grams?
19. 19.🧪 Is it good or poor testing to test it only once? (a) good testing (b) poor testing
20. 20.🔢 To build and test a straw bridge, which comes first: “strengthen the weak part” or “load it with coins”? (a) strengthen the weak part (b) load it with coins
21. 21.True or false: to repeat each test is poor testing. (a) True (b) False
22. 22.🧪 A paper bridge was tested three times. It held 450 g, 340 g and 260 g. What is the mean (average) load it held, in grams?
23. 23.🧪 A paper bridge was tested three times. It held 220 g, 130 g and 160 g. What is the mean (average) load it held, in grams?
24. 24.🔍 Which is the odd one out? (a) skip writing results (b) hide a failed test (c) change only one thing (d) use a new load each time
25. 25.True or false: to use a new load each time is poor testing. (a) False (b) True
26. 26.🧪 Three prototype bridges were tested with the same method. Design A held 200 g, design B held 300 g and design C held 250 g. Which design was the strongest? (a) design A (b) design B (c) design C
27. 27.🧪 In a fair test, how many things do you change at a time? (a) all of them (b) none (c) two (d) one
28. 28.🧪 The first prototype held 50 g. After the team improved it, the new prototype held 120 g. How many more grams did it hold?
29. 29.🔢 To build and test a straw bridge, which comes first: “strengthen the weak part” or “choose and draw one”? (a) strengthen the weak part (b) choose and draw one
30. 30.🔢 To build and test a straw bridge, which comes first: “sketch three ideas” or “load it with coins”? (a) load it with coins (b) sketch three ideas
31. 31.🔢 To build and test a straw bridge, what comes right after “sketch three ideas”? (a) strengthen the weak part (b) build it with straws (c) read the challenge rules (d) choose and draw one
32. 32.🧪 Three prototype bridges were tested with the same method. Design A held 170 g, design B held 270 g and design C held 220 g. Which design was the strongest? (a) design A (b) design B (c) design C
33. 33.True or false: to record every result is poor testing. (a) False (b) True
34. 34.🔢 To build and test a straw bridge, which comes first: “choose and draw one” or “sketch three ideas”? (a) choose and draw one (b) sketch three ideas
35. 35.🔍 Which is the odd one out? (a) record every result (b) test it only once (c) use the same load (d) repeat each test
36. 36.🧪 A paper bridge was tested three times. It held 250 g, 140 g and 240 g. What is the mean (average) load it held, in grams?
37. 37.True or false: to measure the same way is poor testing. (a) True (b) False
38. 38.🔍 Which is the odd one out? (a) use the same load (b) change only one thing (c) guess, do not measure (d) repeat each test
39. 39.🧪 A paper bridge was tested three times. It held 410 g, 330 g and 280 g. What is the mean (average) load it held, in grams?
40. 40.True or false: to measure the same way is good testing. (a) False (b) True

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