Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 396 · 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.🧪 Why do engineers make prototypes? (a) to decorate a room (b) to sell them at once (c) to test ideas cheaply (d) to avoid testing
2. 2.🧪 A paper bridge was tested three times. It held 350 g, 280 g and 360 g. What is the mean (average) load it held, in grams?
3. 3.🔢 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
4. 4.True or false: to record every result is poor testing. (a) True (b) False
5. 5.🔢 To build and test a straw bridge, what comes right after “load it with coins”? (a) strengthen the weak part (b) choose and draw one (c) sketch three ideas (d) read the challenge rules
6. 6.🧪 The first prototype held 90 g. After the team improved it, the new prototype held 180 g. How many more grams did it hold?
7. 7.🔍 Which is the odd one out? (a) test it only once (b) repeat each test (c) change lots at once (d) skip writing results
8. 8.🧪 Three prototype bridges were tested with the same method. Design A held 290 g, design B held 240 g and design C held 190 g. Which design was the weakest? (a) design C (b) design A (c) design B
9. 9.🧪 A paper bridge was tested three times. It held 200 g, 160 g and 240 g. What is the mean (average) load it held, in grams?
10. 10.🧪 Three prototype bridges were tested with the same method. Design A held 130 g, design B held 180 g and design C held 230 g. Which design was the strongest? (a) design A (b) design B (c) design C
11. 11.🧪 A paper bridge was tested three times. It held 300 g, 250 g and 200 g. What is the mean (average) load it held, in grams?
12. 12.🔍 Which is the odd one out? (a) repeat each test (b) change lots at once (c) change only one thing (d) record every result
13. 13.🧪 What is a prototype? (a) a sales poster (b) a broken part (c) an early test model (d) the final product
14. 14.🔢 To build and test a straw bridge, what comes right after “sketch three ideas”? (a) choose and draw one (b) strengthen the weak part (c) load it with coins (d) read the challenge rules
15. 15.🧪 Why repeat a test three times? (a) it looks busy (b) the first is wrong (c) to get reliable results (d) to use more paper
16. 16.True or false: to guess, do not measure is good testing. (a) True (b) False
17. 17.🧪 Is it good or poor testing to record every result? (a) good testing (b) poor testing
18. 18.🔍 Which is the odd one out? (a) repeat each test (b) change only one thing (c) skip writing results (d) use the same load
19. 19.🧪 Three prototype bridges were tested with the same method. Design A held 320 g, design B held 220 g and design C held 270 g. Which design was the weakest? (a) design A (b) design B (c) design C
20. 20.🧪 The first prototype held 280 g. After the team improved it, the new prototype held 440 g. How many more grams did it hold?
21. 21.🔍 Which is the odd one out? (a) guess, do not measure (b) skip writing results (c) record every result (d) test it only once
22. 22.🧪 Three prototype bridges were tested with the same method. Design A held 240 g, design B held 190 g and design C held 290 g. Which design was the weakest? (a) design B (b) design A (c) design C
23. 23.True or false: to skip writing results is poor testing. (a) True (b) False
24. 24.🧪 The first prototype held 90 g. After the team improved it, the new prototype held 140 g. How many more grams did it hold?
25. 25.🧪 A paper bridge was tested three times. It held 300 g, 200 g and 400 g. What is the mean (average) load it held, in grams?
26. 26.True or false: to repeat each test is good testing. (a) True (b) False
27. 27.🧪 Is it good or poor testing to guess, do not measure? (a) poor testing (b) good testing
28. 28.🧪 Is it good or poor testing to measure the same way? (a) poor testing (b) good testing
29. 29.🧪 Three prototype bridges were tested with the same method. Design A held 280 g, design B held 230 g and design C held 330 g. Which design was the strongest? (a) design B (b) design C (c) design A
30. 30.True or false: to change only one thing is poor testing. (a) True (b) False
31. 31.🧪 The first prototype held 70 g. After the team improved it, the new prototype held 150 g. How many more grams did it hold?
32. 32.🧪 A paper bridge was tested three times. It held 220 g, 60 g and 170 g. What is the mean (average) load it held, in grams?
33. 33.🧪 Is it good or poor testing to hide a failed test? (a) poor testing (b) good testing
34. 34.🔢 To build and test a straw bridge, what comes right after “build it with straws”? (a) sketch three ideas (b) load it with coins (c) read the challenge rules (d) strengthen the weak part
35. 35.🔢 To build and test a straw bridge, which comes first: “build it with straws” or “read the challenge rules”? (a) build it with straws (b) read the challenge rules
36. 36.🔢 To build and test a straw bridge, which is the LAST step? (a) choose and draw one (b) strengthen the weak part (c) read the challenge rules (d) build it with straws
37. 37.🔍 Which is the odd one out? (a) change lots at once (b) test it only once (c) skip writing results (d) use the same load
38. 38.🧪 A paper bridge was tested three times. It held 390 g, 300 g and 210 g. What is the mean (average) load it held, in grams?
39. 39.🧪 The first prototype held 110 g. After the team improved it, the new prototype held 180 g. How many more grams did it hold?
40. 40.🧪 Is it good or poor testing to change lots at once? (a) poor testing (b) good testing

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