Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 885 · 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.🧪 Three prototype bridges were tested with the same method. Design A held 240 g, design B held 190 g and design C held 140 g. Which design was the strongest? (a) design A (b) design B (c) design C
2. 2.🧪 What is a prototype? (a) the final product (b) an early test model (c) a sales poster (d) a broken part
3. 3.🧪 Is it good or poor testing to guess, do not measure? (a) good testing (b) poor testing
4. 4.🧪 Three prototype bridges were tested with the same method. Design A held 300 g, design B held 350 g and design C held 250 g. Which design was the strongest? (a) design A (b) design B (c) design C
5. 5.🧪 Why do engineers make prototypes? (a) to sell them at once (b) to test ideas cheaply (c) to avoid testing (d) to decorate a room
6. 6.🧪 Is it good or poor testing to skip writing results? (a) good testing (b) poor testing
7. 7.🔍 Which is the odd one out? (a) use the same load (b) repeat each test (c) record every result (d) change lots at once
8. 8.🔍 Which is the odd one out? (a) test it only once (b) measure the same way (c) record every result (d) change only one thing
9. 9.True or false: to repeat each test is poor testing. (a) True (b) False
10. 10.🧪 The first prototype held 260 g. After the team improved it, the new prototype held 300 g. How many more grams did it hold?
11. 11.🔍 Which is the odd one out? (a) guess, do not measure (b) hide a failed test (c) skip writing results (d) use the same load
12. 12.🧪 The first prototype held 90 g. After the team improved it, the new prototype held 200 g. How many more grams did it hold?
13. 13.🔍 Which is the odd one out? (a) measure the same way (b) repeat each test (c) change only one thing (d) skip writing results
14. 14.🧪 Is it good or poor testing to use the same load? (a) poor testing (b) good testing
15. 15.🔢 To build and test a straw bridge, what comes right after “load it with coins”? (a) sketch three ideas (b) strengthen the weak part (c) build it with straws (d) choose and draw one
16. 16.🔢 To build and test a straw bridge, which comes first: “build it with straws” or “read the challenge rules”? (a) read the challenge rules (b) build it with straws
17. 17.🧪 The first prototype held 220 g. After the team improved it, the new prototype held 320 g. How many more grams did it hold?
18. 18.🧪 Three prototype bridges were tested with the same method. Design A held 290 g, design B held 340 g and design C held 390 g. Which design was the strongest? (a) design A (b) design B (c) design C
19. 19.🧪 A paper bridge was tested three times. It held 320 g, 180 g and 250 g. What is the mean (average) load it held, in grams?
20. 20.🧪 The first prototype held 50 g. After the team improved it, the new prototype held 200 g. How many more grams did it hold?
21. 21.🧪 In a fair test, how many things do you change at a time? (a) all of them (b) one (c) none (d) two
22. 22.True or false: to guess, do not measure is good testing. (a) False (b) True
23. 23.🧪 A paper bridge was tested three times. It held 280 g, 190 g and 310 g. What is the mean (average) load it held, in grams?
24. 24.🔢 To build and test a straw bridge, which comes first: “sketch three ideas” or “choose and draw one”? (a) choose and draw one (b) sketch three ideas
25. 25.🧪 A paper bridge was tested three times. It held 250 g, 140 g and 180 g. What is the mean (average) load it held, in grams?
26. 26.🧪 Is it good or poor testing to change only one thing? (a) good testing (b) poor testing
27. 27.🔢 To build and test a straw bridge, which comes first: “strengthen the weak part” or “build it with straws”? (a) strengthen the weak part (b) build it with straws
28. 28.True or false: to hide a failed test is good testing. (a) False (b) True
29. 29.🔍 Which is the odd one out? (a) guess, do not measure (b) change only one thing (c) repeat each test (d) record every result
30. 30.🧪 Three prototype bridges were tested with the same method. Design A held 330 g, design B held 280 g and design C held 380 g. Which design was the weakest? (a) design A (b) design C (c) design B
31. 31.True or false: to record every result is poor testing. (a) False (b) True
32. 32.🧪 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 weakest? (a) design B (b) design C (c) design A
33. 33.🧪 Three prototype bridges were tested with the same method. Design A held 160 g, design B held 260 g and design C held 210 g. Which design was the weakest? (a) design A (b) design B (c) design C
34. 34.True or false: to change only one thing is good testing. (a) True (b) False
35. 35.🧪 The first prototype held 190 g. After the team improved it, the new prototype held 340 g. How many more grams did it hold?
36. 36.🔍 Which is the odd one out? (a) skip writing results (b) change only one thing (c) use a new load each time (d) hide a failed test
37. 37.🔢 To build and test a straw bridge, which is the LAST step? (a) read the challenge rules (b) choose and draw one (c) load it with coins (d) strengthen the weak part
38. 38.True or false: to skip writing results is poor testing. (a) True (b) False
39. 39.🧪 A paper bridge was tested three times. It held 400 g, 310 g and 220 g. What is the mean (average) load it held, in grams?
40. 40.🧪 Is it good or poor testing to test it only once? (a) poor testing (b) good testing

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