Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 889 · 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.🔍 Which is the odd one out? (a) change only one thing (b) use the same load (c) measure the same way (d) change lots at once
2. 2.🧪 The first prototype held 240 g. After the team improved it, the new prototype held 250 g. How many more grams did it hold?
3. 3.True or false: to test it only once is poor testing. (a) True (b) False
4. 4.🧪 A paper bridge was tested three times. It held 310 g, 220 g and 310 g. What is the mean (average) load it held, in grams?
5. 5.🧪 What is a prototype? (a) a broken part (b) the final product (c) a sales poster (d) an early test model
6. 6.🧪 Is it good or poor testing to guess, do not measure? (a) poor testing (b) good testing
7. 7.True or false: to skip writing results is good testing. (a) False (b) True
8. 8.🧪 A paper bridge was tested three times. It held 290 g, 220 g and 150 g. What is the mean (average) load it held, in grams?
9. 9.🔍 Which is the odd one out? (a) change lots at once (b) guess, do not measure (c) use the same load (d) skip writing results
10. 10.🔍 Which is the odd one out? (a) test it only once (b) skip writing results (c) measure the same way (d) guess, do not measure
11. 11.🔢 To build and test a straw bridge, which comes first: “sketch three ideas” or “read the challenge rules”? (a) sketch three ideas (b) read the challenge rules
12. 12.🧪 Three prototype bridges were tested with the same method. Design A held 220 g, design B held 320 g and design C held 270 g. Which design was the weakest? (a) design B (b) design A (c) design C
13. 13.🧪 Three prototype bridges were tested with the same method. Design A held 160 g, design B held 110 g and design C held 210 g. Which design was the strongest? (a) design B (b) design A (c) design C
14. 14.🔍 Which is the odd one out? (a) skip writing results (b) test it only once (c) use a new load each time (d) record every result
15. 15.🔢 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
16. 16.🧪 The first prototype held 140 g. After the team improved it, the new prototype held 170 g. How many more grams did it hold?
17. 17.🧪 Is it good or poor testing to record every result? (a) good testing (b) poor testing
18. 18.🔍 Which is the odd one out? (a) skip writing results (b) hide a failed test (c) change only one thing (d) guess, do not measure
19. 19.🧪 The first prototype held 50 g. After the team improved it, the new prototype held 70 g. How many more grams did it hold?
20. 20.True or false: to measure the same way is poor testing. (a) True (b) False
21. 21.🧪 A paper bridge was tested three times. It held 270 g, 120 g and 180 g. What is the mean (average) load it held, in grams?
22. 22.🧪 Is it good or poor testing to change only one thing? (a) good testing (b) poor testing
23. 23.True or false: to test it only once is good testing. (a) False (b) True
24. 24.🧪 Is it good or poor testing to hide a failed test? (a) poor testing (b) good testing
25. 25.🧪 Three prototype bridges were tested with the same method. Design A held 290 g, design B held 340 g and design C held 240 g. Which design was the weakest? (a) design B (b) design C (c) design A
26. 26.🧪 In a fair test, how many things do you change at a time? (a) none (b) two (c) all of them (d) one
27. 27.🧪 Why repeat a test three times? (a) it looks busy (b) to get reliable results (c) to use more paper (d) the first is wrong
28. 28.🔢 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) build it with straws (d) sketch three ideas
29. 29.🧪 Is it good or poor testing to use the same load? (a) good testing (b) poor testing
30. 30.🧪 Three prototype bridges were tested with the same method. Design A held 400 g, design B held 350 g and design C held 300 g. Which design was the strongest? (a) design C (b) design B (c) design A
31. 31.True or false: to change lots at once is poor testing. (a) True (b) False
32. 32.🧪 Why do engineers make prototypes? (a) to avoid testing (b) to sell them at once (c) to decorate a room (d) to test ideas cheaply
33. 33.🔍 Which is the odd one out? (a) test it only once (b) measure the same way (c) change only one thing (d) use the same load
34. 34.True or false: to guess, do not measure is good testing. (a) True (b) False
35. 35.🧪 Three prototype bridges were tested with the same method. Design A held 190 g, design B held 240 g and design C held 140 g. Which design was the strongest? (a) design B (b) design A (c) design C
36. 36.True or false: to repeat each test is good testing. (a) False (b) True
37. 37.🔢 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) sketch three ideas
38. 38.🔍 Which is the odd one out? (a) hide a failed test (b) repeat each test (c) guess, do not measure (d) skip writing results
39. 39.🔢 To build and test a straw bridge, which comes first: “choose and draw one” or “strengthen the weak part”? (a) choose and draw one (b) strengthen the weak part
40. 40.🔍 Which is the odd one out? (a) skip writing results (b) repeat each test (c) record every result (d) change only one thing

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