Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 191 · 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 record every result? (a) poor testing (b) good testing
2. 2.True or false: to change only one thing is good testing. (a) True (b) False
3. 3.🔍 Which is the odd one out? (a) test it only once (b) use the same load (c) record every result (d) repeat each test
4. 4.🧪 Is it good or poor testing to guess, do not measure? (a) poor testing (b) good testing
5. 5.🧪 Why do engineers make prototypes? (a) to test ideas cheaply (b) to decorate a room (c) to avoid testing (d) to sell them at once
6. 6.🧪 Is it good or poor testing to measure the same way? (a) good testing (b) poor testing
7. 7.🧪 Three prototype bridges were tested with the same method. Design A held 370 g, design B held 320 g and design C held 270 g. Which design was the strongest? (a) design A (b) design B (c) design C
8. 8.True or false: to measure the same way is poor testing. (a) True (b) False
9. 9.🔍 Which is the odd one out? (a) change only one thing (b) record every result (c) measure the same way (d) hide a failed test
10. 10.True or false: to use a new load each time is good testing. (a) True (b) False
11. 11.🧪 Is it good or poor testing to use the same load? (a) poor testing (b) good testing
12. 12.🧪 What is a prototype? (a) a broken part (b) a sales poster (c) an early test model (d) the final product
13. 13.🧪 A paper bridge was tested three times. It held 360 g, 230 g and 280 g. What is the mean (average) load it held, in grams?
14. 14.🔍 Which is the odd one out? (a) repeat each test (b) change lots at once (c) change only one thing (d) measure the same way
15. 15.🧪 A paper bridge was tested three times. It held 220 g, 80 g and 150 g. What is the mean (average) load it held, in grams?
16. 16.🔢 To build and test a straw bridge, what comes right after “sketch three ideas”? (a) read the challenge rules (b) build it with straws (c) choose and draw one (d) load it with coins
17. 17.True or false: to skip writing results is poor testing. (a) False (b) True
18. 18.🔢 To build and test a straw bridge, which is the FIRST step? (a) choose and draw one (b) build it with straws (c) sketch three ideas (d) read the challenge rules
19. 19.🧪 Is it good or poor testing to test it only once? (a) good testing (b) poor testing
20. 20.🧪 The first prototype held 220 g. After the team improved it, the new prototype held 380 g. How many more grams did it hold?
21. 21.🔍 Which is the odd one out? (a) guess, do not measure (b) record every result (c) use the same load (d) measure the same way
22. 22.🧪 The first prototype held 50 g. After the team improved it, the new prototype held 150 g. How many more grams did it hold?
23. 23.🧪 The first prototype held 90 g. After the team improved it, the new prototype held 240 g. How many more grams did it hold?
24. 24.True or false: to test it only once is good testing. (a) True (b) False
25. 25.🧪 Is it good or poor testing to repeat each test? (a) poor testing (b) good testing
26. 26.True or false: to repeat each test is good testing. (a) False (b) True
27. 27.🔍 Which is the odd one out? (a) use a new load each time (b) skip writing results (c) change lots at once (d) change only one thing
28. 28.🧪 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 weakest? (a) design C (b) design A (c) design B
29. 29.🔍 Which is the odd one out? (a) skip writing results (b) use the same load (c) repeat each test (d) change only one thing
30. 30.🔢 To build and test a straw bridge, which comes first: “read the challenge rules” or “strengthen the weak part”? (a) strengthen the weak part (b) read the challenge rules
31. 31.🧪 Is it good or poor testing to use a new load each time? (a) poor testing (b) good testing
32. 32.True or false: to skip writing results is good testing. (a) False (b) True
33. 33.🧪 Three prototype bridges were tested with the same method. Design A held 290 g, design B held 240 g and design C held 190 g. Which design was the weakest? (a) design C (b) design B (c) design A
34. 34.🧪 Is it good or poor testing to change lots at once? (a) poor testing (b) good testing
35. 35.🧪 The first prototype held 270 g. After the team improved it, the new prototype held 290 g. How many more grams did it hold?
36. 36.🧪 A paper bridge was tested three times. It held 350 g, 270 g and 190 g. What is the mean (average) load it held, in grams?
37. 37.🧪 In a fair test, how many things do you change at a time? (a) one (b) none (c) all of them (d) two
38. 38.True or false: to change only one thing is poor testing. (a) False (b) True
39. 39.🧪 The first prototype held 160 g. After the team improved it, the new prototype held 270 g. How many more grams did it hold?
40. 40.🔢 To build and test a straw bridge, which comes first: “strengthen the weak part” or “load it with coins”? (a) load it with coins (b) strengthen the weak part

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