Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 401 · 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 record every result is good testing. (a) True (b) False
2. 2.🧪 The first prototype held 160 g. After the team improved it, the new prototype held 320 g. How many more grams did it hold?
3. 3.🧪 The first prototype held 270 g. After the team improved it, the new prototype held 280 g. How many more grams did it hold?
4. 4.🧪 What is a prototype? (a) the final product (b) an early test model (c) a broken part (d) a sales poster
5. 5.🧪 The first prototype held 270 g. After the team improved it, the new prototype held 430 g. How many more grams did it hold?
6. 6.🔍 Which is the odd one out? (a) record every result (b) change lots at once (c) use a new load each time (d) test it only once
7. 7.True or false: to use a new load each time is good testing. (a) True (b) False
8. 8.🧪 Why do engineers make prototypes? (a) to decorate a room (b) to test ideas cheaply (c) to avoid testing (d) to sell them at once
9. 9.True or false: to guess, do not measure is poor testing. (a) True (b) False
10. 10.🔢 To build and test a straw bridge, what comes right after “choose and draw one”? (a) read the challenge rules (b) strengthen the weak part (c) sketch three ideas (d) build it with straws
11. 11.🧪 Is it good or poor testing to test it only once? (a) good testing (b) poor testing
12. 12.True or false: to guess, do not measure is good testing. (a) False (b) True
13. 13.🧪 The first prototype held 210 g. After the team improved it, the new prototype held 230 g. How many more grams did it hold?
14. 14.🧪 A paper bridge was tested three times. It held 340 g, 250 g and 430 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) poor testing (b) good testing
16. 16.🧪 Three prototype bridges were tested with the same method. Design A held 250 g, design B held 200 g and design C held 150 g. Which design was the strongest? (a) design C (b) design A (c) design B
17. 17.🧪 Is it good or poor testing to repeat each test? (a) good testing (b) poor testing
18. 18.🧪 The first prototype held 100 g. After the team improved it, the new prototype held 230 g. How many more grams did it hold?
19. 19.🔢 To build and test a straw bridge, which is the FIRST step? (a) sketch three ideas (b) choose and draw one (c) read the challenge rules (d) build it with straws
20. 20.🧪 Is it good or poor testing to record every result? (a) good testing (b) poor testing
21. 21.🧪 In a fair test, how many things do you change at a time? (a) none (b) all of them (c) two (d) one
22. 22.True or false: to hide a failed test is good testing. (a) True (b) False
23. 23.🔍 Which is the odd one out? (a) test it only once (b) repeat each test (c) change only one thing (d) use the same load
24. 24.🔢 To build and test a straw bridge, what comes right after “read the challenge rules”? (a) load it with coins (b) strengthen the weak part (c) sketch three ideas (d) choose and draw one
25. 25.🧪 A paper bridge was tested three times. It held 240 g, 230 g and 220 g. What is the mean (average) load it held, in grams?
26. 26.🧪 The first prototype held 210 g. After the team improved it, the new prototype held 380 g. How many more grams did it hold?
27. 27.🧪 Three prototype bridges were tested with the same method. Design A held 380 g, design B held 330 g and design C held 280 g. Which design was the strongest? (a) design B (b) design A (c) design C
28. 28.🧪 Three prototype bridges were tested with the same method. Design A held 310 g, design B held 260 g and design C held 210 g. Which design was the weakest? (a) design C (b) design B (c) design A
29. 29.🔍 Which is the odd one out? (a) hide a failed test (b) change lots at once (c) change only one thing (d) use a new load each time
30. 30.🧪 The first prototype held 100 g. After the team improved it, the new prototype held 210 g. How many more grams did it hold?
31. 31.🧪 A paper bridge was tested three times. It held 320 g, 250 g and 210 g. What is the mean (average) load it held, in grams?
32. 32.True or false: to repeat each test is good testing. (a) True (b) False
33. 33.🧪 Is it good or poor testing to hide a failed test? (a) poor testing (b) good testing
34. 34.True or false: to skip writing results is poor testing. (a) True (b) False
35. 35.🧪 Is it good or poor testing to guess, do not measure? (a) good testing (b) poor testing
36. 36.🧪 The first prototype held 240 g. After the team improved it, the new prototype held 360 g. How many more grams did it hold?
37. 37.🔍 Which is the odd one out? (a) test it only once (b) change lots at once (c) use a new load each time (d) repeat each test
38. 38.🧪 The first prototype held 160 g. After the team improved it, the new prototype held 170 g. How many more grams did it hold?
39. 39.True or false: to measure the same way is poor testing. (a) False (b) True
40. 40.True or false: to record every result is poor testing. (a) True (b) False

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