Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 48 · 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.🧪 Is it good or poor testing to test it only once? (a) good testing (b) poor testing
2. 2.🧪 The first prototype held 160 g. After the team improved it, the new prototype held 360 g. How many more grams did it hold?
3. 3.🔢 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
4. 4.🧪 Three prototype bridges were tested with the same method. Design A held 240 g, design B held 290 g and design C held 340 g. Which design was the strongest? (a) design C (b) design B (c) design A
5. 5.True or false: to repeat each test is poor testing. (a) False (b) True
6. 6.True or false: to change only one thing is good testing. (a) True (b) False
7. 7.🧪 A paper bridge was tested three times. It held 220 g, 170 g and 120 g. What is the mean (average) load it held, in grams?
8. 8.🔍 Which is the odd one out? (a) record every result (b) measure the same way (c) use the same load (d) change lots at once
9. 9.True or false: to use the same load is good testing. (a) True (b) False
10. 10.🧪 Three prototype bridges were tested with the same method. Design A held 150 g, design B held 250 g and design C held 200 g. Which design was the weakest? (a) design C (b) design B (c) design A
11. 11.🧪 A paper bridge was tested three times. It held 150 g, 130 g and 170 g. What is the mean (average) load it held, in grams?
12. 12.🔍 Which is the odd one out? (a) guess, do not measure (b) change lots at once (c) use a new load each time (d) use the same load
13. 13.🧪 In a fair test, how many things do you change at a time? (a) two (b) one (c) all of them (d) none
14. 14.🧪 Is it good or poor testing to change only one thing? (a) good testing (b) poor testing
15. 15.🔍 Which is the odd one out? (a) repeat each test (b) skip writing results (c) use the same load (d) change only one thing
16. 16.🧪 The first prototype held 80 g. After the team improved it, the new prototype held 90 g. How many more grams did it hold?
17. 17.🔢 To build and test a straw bridge, which comes first: “read the challenge rules” or “load it with coins”? (a) load it with coins (b) read the challenge rules
18. 18.🧪 Three prototype bridges were tested with the same method. Design A held 330 g, design B held 280 g and design C held 230 g. Which design was the strongest? (a) design B (b) design A (c) design C
19. 19.🧪 The first prototype held 80 g. After the team improved it, the new prototype held 230 g. How many more grams did it hold?
20. 20.🧪 What is a prototype? (a) an early test model (b) a broken part (c) a sales poster (d) the final product
21. 21.True or false: to hide a failed test is poor testing. (a) False (b) True
22. 22.🧪 A paper bridge was tested three times. It held 310 g, 210 g and 320 g. What is the mean (average) load it held, in grams?
23. 23.🧪 Why repeat a test three times? (a) it looks busy (b) to get reliable results (c) the first is wrong (d) to use more paper
24. 24.True or false: to use the same load is poor testing. (a) True (b) False
25. 25.🔢 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
26. 26.🧪 The first prototype held 180 g. After the team improved it, the new prototype held 210 g. How many more grams did it hold?
27. 27.🧪 Is it good or poor testing to hide a failed test? (a) good testing (b) poor testing
28. 28.🔍 Which is the odd one out? (a) record every result (b) hide a failed test (c) use the same load (d) change only one thing
29. 29.🔍 Which is the odd one out? (a) use the same load (b) repeat each test (c) test it only once (d) change only one thing
30. 30.True or false: to record every result is poor testing. (a) False (b) True
31. 31.🧪 Is it good or poor testing to measure the same way? (a) good testing (b) poor testing
32. 32.🧪 A paper bridge was tested three times. It held 200 g, 170 g and 170 g. What is the mean (average) load it held, in grams?
33. 33.🧪 Is it good or poor testing to skip writing results? (a) good testing (b) poor testing
34. 34.🧪 Is it good or poor testing to use the same load? (a) good testing (b) poor testing
35. 35.🧪 Three prototype bridges were tested with the same method. Design A held 190 g, design B held 140 g and design C held 240 g. Which design was the strongest? (a) design C (b) design B (c) design A
36. 36.🧪 The first prototype held 140 g. After the team improved it, the new prototype held 210 g. How many more grams did it hold?
37. 37.🔍 Which is the odd one out? (a) repeat each test (b) use a new load each time (c) record every result (d) change only one thing
38. 38.🔢 To build and test a straw bridge, what comes right after “build it with straws”? (a) read the challenge rules (b) sketch three ideas (c) load it with coins (d) choose and draw one
39. 39.True or false: to hide a failed test is good testing. (a) True (b) False
40. 40.🔢 To build and test a straw bridge, which is the LAST step? (a) choose and draw one (b) load it with coins (c) read the challenge rules (d) strengthen the weak part

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