Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 140 · 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.🧪 The first prototype held 240 g. After the team improved it, the new prototype held 270 g. How many more grams did it hold?
2. 2.True or false: to test it only once is poor testing. (a) False (b) True
3. 3.🧪 Is it good or poor testing to hide a failed test? (a) good testing (b) poor testing
4. 4.🧪 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
5. 5.🔢 To build and test a straw bridge, which is the FIRST step? (a) strengthen the weak part (b) load it with coins (c) choose and draw one (d) read the challenge rules
6. 6.🧪 Three prototype bridges were tested with the same method. Design A held 120 g, design B held 170 g and design C held 220 g. Which design was the weakest? (a) design B (b) design A (c) design C
7. 7.True or false: to guess, do not measure is poor testing. (a) False (b) True
8. 8.🔢 To build and test a straw bridge, what comes right after “sketch three ideas”? (a) load it with coins (b) choose and draw one (c) read the challenge rules (d) strengthen the weak part
9. 9.🔍 Which is the odd one out? (a) hide a failed test (b) measure the same way (c) change lots at once (d) skip writing results
10. 10.🔍 Which is the odd one out? (a) skip writing results (b) change lots at once (c) change only one thing (d) hide a failed test
11. 11.True or false: to change only one thing is poor testing. (a) False (b) True
12. 12.🔢 To build and test a straw bridge, which comes first: “strengthen the weak part” or “build it with straws”? (a) build it with straws (b) strengthen the weak part
13. 13.🔢 To build and test a straw bridge, which is the LAST step? (a) strengthen the weak part (b) choose and draw one (c) load it with coins (d) sketch three ideas
14. 14.True or false: to record every result is good testing. (a) False (b) True
15. 15.🔍 Which is the odd one out? (a) measure the same way (b) record every result (c) change lots at once (d) change only one thing
16. 16.True or false: to repeat each test is poor testing. (a) False (b) True
17. 17.🔍 Which is the odd one out? (a) guess, do not measure (b) use the same load (c) measure the same way (d) repeat each test
18. 18.🧪 A paper bridge was tested three times. It held 210 g, 160 g and 200 g. What is the mean (average) load it held, in grams?
19. 19.🧪 Three prototype bridges were tested with the same method. Design A held 160 g, design B held 260 g and design C held 210 g. Which design was the strongest? (a) design A (b) design B (c) design C
20. 20.🧪 The first prototype held 250 g. After the team improved it, the new prototype held 260 g. How many more grams did it hold?
21. 21.🔍 Which is the odd one out? (a) hide a failed test (b) test it only once (c) change lots at once (d) record every result
22. 22.True or false: to guess, do not measure is good testing. (a) False (b) True
23. 23.🧪 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?
24. 24.🧪 The first prototype held 270 g. After the team improved it, the new prototype held 370 g. How many more grams did it hold?
25. 25.🔍 Which is the odd one out? (a) skip writing results (b) guess, do not measure (c) repeat each test (d) test it only once
26. 26.🧪 Three prototype bridges were tested with the same method. Design A held 230 g, design B held 130 g and design C held 180 g. Which design was the weakest? (a) design A (b) design C (c) design B
27. 27.True or false: to use the same load is poor testing. (a) True (b) False
28. 28.🧪 Is it good or poor testing to measure the same way? (a) good testing (b) poor testing
29. 29.🧪 A paper bridge was tested three times. It held 290 g, 140 g and 200 g. What is the mean (average) load it held, in grams?
30. 30.🧪 The first prototype held 240 g. After the team improved it, the new prototype held 330 g. How many more grams did it hold?
31. 31.🔢 To build and test a straw bridge, which comes first: “choose and draw one” or “strengthen the weak part”? (a) strengthen the weak part (b) choose and draw one
32. 32.🧪 The first prototype held 290 g. After the team improved it, the new prototype held 470 g. How many more grams did it hold?
33. 33.True or false: to measure the same way is good testing. (a) True (b) False
34. 34.🧪 Is it good or poor testing to test it only once? (a) good testing (b) poor testing
35. 35.🧪 Three prototype bridges were tested with the same method. Design A held 240 g, design B held 140 g and design C held 190 g. Which design was the strongest? (a) design A (b) design B (c) design C
36. 36.🧪 The first prototype held 260 g. After the team improved it, the new prototype held 440 g. How many more grams did it hold?
37. 37.🧪 A paper bridge was tested three times. It held 220 g, 110 g and 150 g. What is the mean (average) load it held, in grams?
38. 38.🧪 Is it good or poor testing to use a new load each time? (a) good testing (b) poor testing
39. 39.🧪 What is a prototype? (a) a broken part (b) a sales poster (c) the final product (d) an early test model
40. 40.🔢 To build and test a straw bridge, which comes first: “sketch three ideas” or “choose and draw one”? (a) choose and draw one (b) sketch three ideas

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