Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 8 · 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 use the same load is good testing. (a) False (b) True
2. 2.🧪 What is a prototype? (a) a broken part (b) the final product (c) a sales poster (d) an early test model
3. 3.🔢 To build and test a straw bridge, what comes right after “read the challenge rules”? (a) load it with coins (b) sketch three ideas (c) build it with straws (d) strengthen the weak part
4. 4.🔍 Which is the odd one out? (a) test it only once (b) change lots at once (c) hide a failed test (d) repeat each test
5. 5.🧪 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 weakest? (a) design C (b) design B (c) design A
6. 6.🧪 The first prototype held 90 g. After the team improved it, the new prototype held 220 g. How many more grams did it hold?
7. 7.🔍 Which is the odd one out? (a) measure the same way (b) use the same load (c) hide a failed test (d) record every result
8. 8.🔢 To build and test a straw bridge, which is the FIRST step? (a) read the challenge rules (b) strengthen the weak part (c) build it with straws (d) sketch three ideas
9. 9.🔢 To build and test a straw bridge, which comes first: “load it with coins” or “strengthen the weak part”? (a) load it with coins (b) strengthen the weak part
10. 10.🧪 Why repeat a test three times? (a) to get reliable results (b) to use more paper (c) the first is wrong (d) it looks busy
11. 11.🧪 Is it good or poor testing to guess, do not measure? (a) poor testing (b) good testing
12. 12.True or false: to change lots at once is poor testing. (a) True (b) False
13. 13.True or false: to test it only once is good testing. (a) False (b) True
14. 14.🔢 To build and test a straw bridge, what comes right after “build it with straws”? (a) sketch three ideas (b) read the challenge rules (c) load it with coins (d) strengthen the weak part
15. 15.🔍 Which is the odd one out? (a) measure the same way (b) change only one thing (c) repeat each test (d) use a new load each time
16. 16.True or false: to measure the same way is poor testing. (a) False (b) True
17. 17.🧪 The first prototype held 170 g. After the team improved it, the new prototype held 260 g. How many more grams did it hold?
18. 18.True or false: to hide a failed test is good testing. (a) True (b) False
19. 19.🧪 Is it good or poor testing to change only one thing? (a) good testing (b) poor testing
20. 20.🧪 Is it good or poor testing to repeat each test? (a) good testing (b) poor testing
21. 21.🧪 Three prototype bridges were tested with the same method. Design A held 150 g, design B held 100 g and design C held 200 g. Which design was the weakest? (a) design A (b) design B (c) design C
22. 22.🔢 To build and test a straw bridge, which comes first: “load it with coins” or “choose and draw one”? (a) choose and draw one (b) load it with coins
23. 23.🧪 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 strongest? (a) design A (b) design B (c) design C
24. 24.🧪 A paper bridge was tested three times. It held 390 g, 270 g and 240 g. What is the mean (average) load it held, in grams?
25. 25.🧪 Is it good or poor testing to skip writing results? (a) good testing (b) poor testing
26. 26.🔢 To build and test a straw bridge, which is the LAST step? (a) build it with straws (b) strengthen the weak part (c) choose and draw one (d) read the challenge rules
27. 27.True or false: to change only one thing is poor testing. (a) False (b) True
28. 28.🧪 The first prototype held 160 g. After the team improved it, the new prototype held 200 g. How many more grams did it hold?
29. 29.🧪 The first prototype held 260 g. After the team improved it, the new prototype held 440 g. How many more grams did it hold?
30. 30.🧪 In a fair test, how many things do you change at a time? (a) two (b) none (c) all of them (d) one
31. 31.🧪 The first prototype held 230 g. After the team improved it, the new prototype held 320 g. How many more grams did it hold?
32. 32.🔢 To build and test a straw bridge, which comes first: “read the challenge rules” or “sketch three ideas”? (a) sketch three ideas (b) read the challenge rules
33. 33.True or false: to guess, do not measure is good testing. (a) False (b) True
34. 34.🧪 A paper bridge was tested three times. It held 310 g, 240 g and 170 g. What is the mean (average) load it held, in grams?
35. 35.🧪 A paper bridge was tested three times. It held 270 g, 160 g and 80 g. What is the mean (average) load it held, in grams?
36. 36.🔍 Which is the odd one out? (a) record every result (b) use the same load (c) skip writing results (d) repeat each test
37. 37.🧪 The first prototype held 280 g. After the team improved it, the new prototype held 410 g. How many more grams did it hold?
38. 38.🔍 Which is the odd one out? (a) test it only once (b) change lots at once (c) measure the same way (d) guess, do not measure
39. 39.🧪 The first prototype held 130 g. After the team improved it, the new prototype held 250 g. How many more grams did it hold?
40. 40.🔢 To build and test a straw bridge, what comes right after “sketch three ideas”? (a) build it with straws (b) load it with coins (c) choose and draw one (d) read the challenge rules

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