Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 875 · 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 use the same load? (a) good testing (b) poor testing
2. 2.🧪 Is it good or poor testing to change lots at once? (a) good testing (b) poor testing
3. 3.🧪 What is a prototype? (a) an early test model (b) the final product (c) a broken part (d) a sales poster
4. 4.🔍 Which is the odd one out? (a) hide a failed test (b) guess, do not measure (c) use a new load each time (d) change only one thing
5. 5.True or false: to use a new load each time is good testing. (a) False (b) True
6. 6.🧪 Is it good or poor testing to record every result? (a) poor testing (b) good testing
7. 7.🧪 Is it good or poor testing to test it only once? (a) poor testing (b) good testing
8. 8.🔢 To build and test a straw bridge, which is the FIRST step? (a) choose and draw one (b) build it with straws (c) read the challenge rules (d) strengthen the weak part
9. 9.🧪 The first prototype held 300 g. After the team improved it, the new prototype held 420 g. How many more grams did it hold?
10. 10.🧪 Is it good or poor testing to skip writing results? (a) good testing (b) poor testing
11. 11.🔍 Which is the odd one out? (a) guess, do not measure (b) record every result (c) use the same load (d) change only one thing
12. 12.🔢 To build and test a straw bridge, what comes right after “sketch three ideas”? (a) choose and draw one (b) strengthen the weak part (c) build it with straws (d) read the challenge rules
13. 13.🔢 To build and test a straw bridge, which comes first: “choose and draw one” or “read the challenge rules”? (a) choose and draw one (b) read the challenge rules
14. 14.🔢 To build and test a straw bridge, which comes first: “sketch three ideas” or “choose and draw one”? (a) sketch three ideas (b) choose and draw one
15. 15.True or false: to repeat each test is poor testing. (a) False (b) True
16. 16.🧪 Is it good or poor testing to measure the same way? (a) good testing (b) poor testing
17. 17.🧪 Why do engineers make prototypes? (a) to test ideas cheaply (b) to sell them at once (c) to avoid testing (d) to decorate a room
18. 18.🔍 Which is the odd one out? (a) use the same load (b) measure the same way (c) record every result (d) skip writing results
19. 19.🔢 To build and test a straw bridge, which comes first: “strengthen the weak part” or “load it with coins”? (a) strengthen the weak part (b) load it with coins
20. 20.🔢 To build and test a straw bridge, which comes first: “build it with straws” or “sketch three ideas”? (a) sketch three ideas (b) build it with straws
21. 21.True or false: to change lots at once is good testing. (a) False (b) True
22. 22.🧪 Why repeat a test three times? (a) the first is wrong (b) it looks busy (c) to get reliable results (d) to use more paper
23. 23.🧪 The first prototype held 100 g. After the team improved it, the new prototype held 180 g. How many more grams did it hold?
24. 24.True or false: to record every result is poor testing. (a) False (b) True
25. 25.🧪 Three prototype bridges were tested with the same method. Design A held 340 g, design B held 290 g and design C held 240 g. Which design was the weakest? (a) design B (b) design A (c) design C
26. 26.🔍 Which is the odd one out? (a) test it only once (b) record every result (c) use a new load each time (d) guess, do not measure
27. 27.🔍 Which is the odd one out? (a) skip writing results (b) change lots at once (c) repeat each test (d) use a new load each time
28. 28.🧪 A paper bridge was tested three times. It held 170 g, 120 g and 220 g. What is the mean (average) load it held, in grams?
29. 29.🧪 A paper bridge was tested three times. It held 200 g, 80 g and 260 g. What is the mean (average) load it held, in grams?
30. 30.True or false: to skip writing results is poor testing. (a) True (b) False
31. 31.🧪 Is it good or poor testing to hide a failed test? (a) good testing (b) poor testing
32. 32.🔍 Which is the odd one out? (a) use a new load each time (b) change only one thing (c) use the same load (d) record every result
33. 33.🧪 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 weakest? (a) design C (b) design B (c) design A
34. 34.True or false: to change only one thing is good testing. (a) False (b) True
35. 35.🔢 To build and test a straw bridge, what comes right after “choose and draw one”? (a) sketch three ideas (b) strengthen the weak part (c) load it with coins (d) build it with straws
36. 36.🧪 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 A (b) design C (c) design B
37. 37.🧪 Is it good or poor testing to guess, do not measure? (a) good testing (b) poor testing
38. 38.🧪 Three prototype bridges were tested with the same method. Design A held 280 g, design B held 230 g and design C held 330 g. Which design was the strongest? (a) design A (b) design B (c) design C
39. 39.True or false: to test it only once is poor testing. (a) True (b) False
40. 40.🧪 In a fair test, how many things do you change at a time? (a) two (b) one (c) none (d) all of them

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