Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 703 · 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.🧪 In a fair test, how many things do you change at a time? (a) all of them (b) two (c) one (d) none
2. 2.True or false: to test it only once is good testing. (a) False (b) True
3. 3.🧪 A paper bridge was tested three times. It held 200 g, 60 g and 220 g. What is the mean (average) load it held, in grams?
4. 4.🧪 Is it good or poor testing to test it only once? (a) poor testing (b) good testing
5. 5.🧪 The first prototype held 190 g. After the team improved it, the new prototype held 260 g. How many more grams did it hold?
6. 6.🔢 To build and test a straw bridge, which is the FIRST step? (a) load it with coins (b) read the challenge rules (c) strengthen the weak part (d) choose and draw one
7. 7.🔍 Which is the odd one out? (a) guess, do not measure (b) test it only once (c) record every result (d) change lots at once
8. 8.🧪 Is it good or poor testing to change lots at once? (a) good testing (b) poor testing
9. 9.🔍 Which is the odd one out? (a) change only one thing (b) change lots at once (c) skip writing results (d) guess, do not measure
10. 10.True or false: to change lots at once is good testing. (a) False (b) True
11. 11.🧪 The first prototype held 240 g. After the team improved it, the new prototype held 420 g. How many more grams did it hold?
12. 12.🧪 Is it good or poor testing to change only one thing? (a) good testing (b) poor testing
13. 13.🧪 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 weakest? (a) design B (b) design C (c) design A
14. 14.🔢 To build and test a straw bridge, which comes first: “sketch three ideas” or “strengthen the weak part”? (a) strengthen the weak part (b) sketch three ideas
15. 15.True or false: to skip writing results is good testing. (a) True (b) False
16. 16.🔢 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
17. 17.🧪 What is a prototype? (a) the final product (b) a broken part (c) an early test model (d) a sales poster
18. 18.True or false: to use a new load each time is good testing. (a) False (b) True
19. 19.🧪 Three prototype bridges were tested with the same method. Design A held 280 g, design B held 380 g and design C held 330 g. Which design was the strongest? (a) design A (b) design C (c) design B
20. 20.True or false: to repeat each test is good testing. (a) False (b) True
21. 21.🧪 Is it good or poor testing to hide a failed test? (a) good testing (b) poor testing
22. 22.🧪 A paper bridge was tested three times. It held 360 g, 240 g and 390 g. What is the mean (average) load it held, in grams?
23. 23.True or false: to change only one thing is poor testing. (a) False (b) True
24. 24.🧪 Is it good or poor testing to repeat each test? (a) poor testing (b) good testing
25. 25.🧪 Is it good or poor testing to skip writing results? (a) good testing (b) poor testing
26. 26.🧪 Is it good or poor testing to record every result? (a) good testing (b) poor testing
27. 27.🧪 Why do engineers make prototypes? (a) to test ideas cheaply (b) to decorate a room (c) to sell them at once (d) to avoid testing
28. 28.🧪 Three prototype bridges were tested with the same method. Design A held 130 g, design B held 180 g and design C held 230 g. Which design was the strongest? (a) design A (b) design B (c) design C
29. 29.🧪 The first prototype held 170 g. After the team improved it, the new prototype held 290 g. How many more grams did it hold?
30. 30.🧪 The first prototype held 130 g. After the team improved it, the new prototype held 230 g. How many more grams did it hold?
31. 31.🔍 Which is the odd one out? (a) record every result (b) measure the same way (c) change lots at once (d) change only one thing
32. 32.🧪 Three prototype bridges were tested with the same method. Design A held 300 g, design B held 200 g and design C held 250 g. Which design was the weakest? (a) design C (b) design A (c) design B
33. 33.True or false: to hide a failed test is poor testing. (a) False (b) True
34. 34.🔢 To build and test a straw bridge, which comes first: “strengthen the weak part” or “read the challenge rules”? (a) strengthen the weak part (b) read the challenge rules
35. 35.🧪 The first prototype held 210 g. After the team improved it, the new prototype held 270 g. How many more grams did it hold?
36. 36.🧪 The first prototype held 80 g. After the team improved it, the new prototype held 110 g. How many more grams did it hold?
37. 37.🧪 Three prototype bridges were tested with the same method. Design A held 200 g, design B held 150 g and design C held 250 g. Which design was the weakest? (a) design C (b) design A (c) design B
38. 38.🧪 Is it good or poor testing to guess, do not measure? (a) good testing (b) poor testing
39. 39.🔍 Which is the odd one out? (a) guess, do not measure (b) test it only once (c) hide a failed test (d) repeat each test
40. 40.🔢 To build and test a straw bridge, which comes first: “choose and draw one” or “sketch three ideas”? (a) sketch three ideas (b) choose and draw one

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