Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 824 · 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 change lots at once is good testing. (a) True (b) False
2. 2.True or false: to test it only once is poor testing. (a) True (b) False
3. 3.True or false: to guess, do not measure is poor testing. (a) False (b) True
4. 4.🧪 Three prototype bridges were tested with the same method. Design A held 100 g, design B held 200 g and design C held 150 g. Which design was the strongest? (a) design A (b) design C (c) design B
5. 5.🧪 What is a prototype? (a) an early test model (b) a sales poster (c) the final product (d) a broken part
6. 6.🧪 A paper bridge was tested three times. It held 420 g, 250 g and 350 g. What is the mean (average) load it held, in grams?
7. 7.True or false: to guess, do not measure is good testing. (a) True (b) False
8. 8.🧪 Is it good or poor testing to skip writing results? (a) poor testing (b) good testing
9. 9.🧪 The first prototype held 50 g. After the team improved it, the new prototype held 190 g. How many more grams did it hold?
10. 10.🔍 Which is the odd one out? (a) test it only once (b) change lots at once (c) use a new load each time (d) record every result
11. 11.True or false: to repeat each test is good testing. (a) False (b) True
12. 12.🧪 Three prototype bridges were tested with the same method. Design A held 220 g, design B held 170 g and design C held 120 g. Which design was the weakest? (a) design A (b) design B (c) design C
13. 13.🧪 Is it good or poor testing to change only one thing? (a) good testing (b) poor testing
14. 14.🧪 A paper bridge was tested three times. It held 320 g, 250 g and 390 g. What is the mean (average) load it held, in grams?
15. 15.🧪 In a fair test, how many things do you change at a time? (a) all of them (b) two (c) one (d) none
16. 16.🧪 Is it good or poor testing to use the same load? (a) good testing (b) poor testing
17. 17.🧪 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
18. 18.🧪 Is it good or poor testing to repeat each test? (a) poor testing (b) good testing
19. 19.🧪 The first prototype held 90 g. After the team improved it, the new prototype held 140 g. How many more grams did it hold?
20. 20.🧪 Is it good or poor testing to measure the same way? (a) poor testing (b) good testing
21. 21.🧪 The first prototype held 120 g. After the team improved it, the new prototype held 280 g. How many more grams did it hold?
22. 22.🔢 To build and test a straw bridge, what comes right after “load it with coins”? (a) strengthen the weak part (b) read the challenge rules (c) build it with straws (d) sketch three ideas
23. 23.🔢 To build and test a straw bridge, which comes first: “choose and draw one” or “load it with coins”? (a) choose and draw one (b) load it with coins
24. 24.🧪 Is it good or poor testing to change lots at once? (a) poor testing (b) good testing
25. 25.🔍 Which is the odd one out? (a) guess, do not measure (b) hide a failed test (c) use a new load each time (d) change only one thing
26. 26.🧪 A paper bridge was tested three times. It held 350 g, 190 g and 240 g. What is the mean (average) load it held, in grams?
27. 27.🔍 Which is the odd one out? (a) measure the same way (b) change only one thing (c) record every result (d) hide a failed test
28. 28.🧪 Is it good or poor testing to record every result? (a) poor testing (b) good testing
29. 29.🧪 Is it good or poor testing to guess, do not measure? (a) poor testing (b) good testing
30. 30.True or false: to measure the same way is good testing. (a) False (b) True
31. 31.🔢 To build and test a straw bridge, which comes first: “build it with straws” or “strengthen the weak part”? (a) strengthen the weak part (b) build it with straws
32. 32.🧪 The first prototype held 300 g. After the team improved it, the new prototype held 350 g. How many more grams did it hold?
33. 33.🧪 Three prototype bridges were tested with the same method. Design A held 200 g, design B held 150 g and design C held 100 g. Which design was the strongest? (a) design C (b) design B (c) design A
34. 34.True or false: to use the same load is poor testing. (a) True (b) False
35. 35.🔢 To build and test a straw bridge, which is the FIRST step? (a) build it with straws (b) load it with coins (c) read the challenge rules (d) sketch three ideas
36. 36.🔢 To build and test a straw bridge, what comes right after “build it with straws”? (a) strengthen the weak part (b) load it with coins (c) sketch three ideas (d) read the challenge rules
37. 37.🧪 A paper bridge was tested three times. It held 360 g, 290 g and 250 g. What is the mean (average) load it held, in grams?
38. 38.🧪 The first prototype held 100 g. After the team improved it, the new prototype held 170 g. How many more grams did it hold?
39. 39.🧪 A paper bridge was tested three times. It held 200 g, 90 g and 160 g. What is the mean (average) load it held, in grams?
40. 40.🧪 A paper bridge was tested three times. It held 270 g, 170 g and 130 g. What is the mean (average) load it held, in grams?

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