Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 346 · 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.True or false: to hide a failed test is poor testing. (a) True (b) False
2. 2.🔢 To build and test a straw bridge, which is the LAST step? (a) choose and draw one (b) read the challenge rules (c) strengthen the weak part (d) sketch three ideas
3. 3.🧪 The first prototype held 120 g. After the team improved it, the new prototype held 280 g. How many more grams did it hold?
4. 4.🧪 Is it good or poor testing to hide a failed test? (a) poor testing (b) good testing
5. 5.🧪 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 weakest? (a) design B (b) design A (c) design C
6. 6.🧪 A paper bridge was tested three times. It held 240 g, 130 g and 290 g. What is the mean (average) load it held, in grams?
7. 7.🔢 To build and test a straw bridge, which comes first: “build it with straws” or “strengthen the weak part”? (a) build it with straws (b) strengthen the weak part
8. 8.🧪 Is it good or poor testing to skip writing results? (a) good testing (b) poor testing
9. 9.🔢 To build and test a straw bridge, which comes first: “load it with coins” or “build it with straws”? (a) load it with coins (b) build it with straws
10. 10.🧪 What is a prototype? (a) a broken part (b) the final product (c) an early test model (d) a sales poster
11. 11.🔍 Which is the odd one out? (a) use the same load (b) change only one thing (c) measure the same way (d) use a new load each time
12. 12.True or false: to use a new load each time is good testing. (a) True (b) False
13. 13.True or false: to measure the same way is good testing. (a) False (b) True
14. 14.🧪 A paper bridge was tested three times. It held 290 g, 190 g and 330 g. What is the mean (average) load it held, in grams?
15. 15.🧪 Is it good or poor testing to change lots at once? (a) good testing (b) poor testing
16. 16.🧪 The first prototype held 70 g. After the team improved it, the new prototype held 210 g. How many more grams did it hold?
17. 17.🧪 A paper bridge was tested three times. It held 340 g, 180 g and 200 g. What is the mean (average) load it held, in grams?
18. 18.🔢 To build and test a straw bridge, which comes first: “sketch three ideas” or “read the challenge rules”? (a) sketch three ideas (b) read the challenge rules
19. 19.🧪 The first prototype held 140 g. After the team improved it, the new prototype held 330 g. How many more grams did it hold?
20. 20.🧪 A paper bridge was tested three times. It held 300 g, 110 g and 220 g. What is the mean (average) load it held, in grams?
21. 21.True or false: to repeat each test is good testing. (a) False (b) True
22. 22.🧪 A paper bridge was tested three times. It held 280 g, 190 g and 310 g. What is the mean (average) load it held, in grams?
23. 23.🧪 Three prototype bridges were tested with the same method. Design A held 350 g, design B held 300 g and design C held 400 g. Which design was the weakest? (a) design A (b) design C (c) design B
24. 24.🧪 A paper bridge was tested three times. It held 430 g, 260 g and 300 g. What is the mean (average) load it held, in grams?
25. 25.🔍 Which is the odd one out? (a) record every result (b) measure the same way (c) skip writing results (d) use the same load
26. 26.🧪 The first prototype held 240 g. After the team improved it, the new prototype held 300 g. How many more grams did it hold?
27. 27.🧪 Three prototype bridges were tested with the same method. Design A held 210 g, design B held 260 g and design C held 310 g. Which design was the weakest? (a) design C (b) design B (c) design A
28. 28.True or false: to use a new load each time is poor testing. (a) True (b) False
29. 29.True or false: to repeat each test is poor testing. (a) True (b) False
30. 30.🧪 Is it good or poor testing to repeat each test? (a) good testing (b) poor testing
31. 31.True or false: to test it only once is good testing. (a) True (b) False
32. 32.True or false: to change only one thing is poor testing. (a) True (b) False
33. 33.True or false: to measure the same way is poor testing. (a) True (b) False
34. 34.🧪 A paper bridge was tested three times. It held 280 g, 260 g and 270 g. What is the mean (average) load it held, in grams?
35. 35.True or false: to guess, do not measure is poor testing. (a) True (b) False
36. 36.🔢 To build and test a straw bridge, what comes right after “build it with straws”? (a) choose and draw one (b) strengthen the weak part (c) read the challenge rules (d) load it with coins
37. 37.True or false: to skip writing results is good testing. (a) False (b) True
38. 38.🧪 A paper bridge was tested three times. It held 380 g, 330 g and 310 g. What is the mean (average) load it held, in grams?
39. 39.True or false: to change lots at once is good testing. (a) True (b) False
40. 40.True or false: to test it only once is poor testing. (a) False (b) True

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