Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 692 · 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) repeat each test (b) use the same load (c) test it only once (d) change only one thing
2. 2.🔍 Which is the odd one out? (a) change only one thing (b) hide a failed test (c) test it only once (d) guess, do not measure
3. 3.🧪 Three prototype bridges were tested with the same method. Design A held 350 g, design B held 300 g and design C held 400 g. Which design was the weakest? (a) design A (b) design C (c) design B
4. 4.🔍 Which is the odd one out? (a) record every result (b) repeat each test (c) hide a failed test (d) use the same load
5. 5.🧪 What is a prototype? (a) the final product (b) an early test model (c) a sales poster (d) a broken part
6. 6.🧪 Why repeat a test three times? (a) it looks busy (b) to get reliable results (c) the first is wrong (d) to use more paper
7. 7.🔢 To build and test a straw bridge, what comes right after “read the challenge rules”? (a) sketch three ideas (b) build it with straws (c) choose and draw one (d) load it with coins
8. 8.🧪 In a fair test, how many things do you change at a time? (a) all of them (b) none (c) two (d) one
9. 9.🧪 Three prototype bridges were tested with the same method. Design A held 230 g, design B held 280 g and design C held 180 g. Which design was the weakest? (a) design C (b) design B (c) design A
10. 10.🔢 To build and test a straw bridge, what comes right after “sketch three ideas”? (a) load it with coins (b) strengthen the weak part (c) choose and draw one (d) read the challenge rules
11. 11.🧪 A paper bridge was tested three times. It held 260 g, 200 g and 320 g. What is the mean (average) load it held, in grams?
12. 12.🔢 To build and test a straw bridge, which comes first: “read the challenge rules” or “strengthen the weak part”? (a) read the challenge rules (b) strengthen the weak part
13. 13.🧪 Is it good or poor testing to guess, do not measure? (a) good testing (b) poor testing
14. 14.🧪 Is it good or poor testing to change only one thing? (a) good testing (b) poor testing
15. 15.🧪 Is it good or poor testing to measure the same way? (a) poor testing (b) good testing
16. 16.🔍 Which is the odd one out? (a) measure the same way (b) guess, do not measure (c) hide a failed test (d) test it only once
17. 17.🔢 To build and test a straw bridge, which comes first: “sketch three ideas” or “build it with straws”? (a) sketch three ideas (b) build it with straws
18. 18.🧪 The first prototype held 110 g. After the team improved it, the new prototype held 240 g. How many more grams did it hold?
19. 19.True or false: to repeat each test is good testing. (a) False (b) True
20. 20.True or false: to change only one thing is poor testing. (a) False (b) True
21. 21.🔢 To build and test a straw bridge, which comes first: “build it with straws” or “choose and draw one”? (a) choose and draw one (b) build it with straws
22. 22.🧪 Three prototype bridges were tested with the same method. Design A held 270 g, design B held 170 g and design C held 220 g. Which design was the weakest? (a) design C (b) design B (c) design A
23. 23.🧪 Why do engineers make prototypes? (a) to decorate a room (b) to avoid testing (c) to sell them at once (d) to test ideas cheaply
24. 24.🧪 A paper bridge was tested three times. It held 200 g, 140 g and 140 g. What is the mean (average) load it held, in grams?
25. 25.True or false: to guess, do not measure is good testing. (a) True (b) False
26. 26.True or false: to change lots at once is good testing. (a) False (b) True
27. 27.True or false: to skip writing results is poor testing. (a) False (b) True
28. 28.🔢 To build and test a straw bridge, which is the LAST step? (a) choose and draw one (b) build it with straws (c) read the challenge rules (d) strengthen the weak part
29. 29.🧪 Three prototype bridges were tested with the same method. Design A held 200 g, design B held 250 g and design C held 300 g. Which design was the strongest? (a) design B (b) design C (c) design A
30. 30.🧪 A paper bridge was tested three times. It held 280 g, 240 g and 290 g. What is the mean (average) load it held, in grams?
31. 31.🧪 Three prototype bridges were tested with the same method. Design A held 190 g, design B held 290 g and design C held 240 g. Which design was the weakest? (a) design C (b) design B (c) design A
32. 32.🧪 A paper bridge was tested three times. It held 420 g, 260 g and 370 g. What is the mean (average) load it held, in grams?
33. 33.🔍 Which is the odd one out? (a) change only one thing (b) measure the same way (c) record every result (d) skip writing results
34. 34.🧪 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 B (b) design A (c) design C
35. 35.🧪 The first prototype held 130 g. After the team improved it, the new prototype held 290 g. How many more grams did it hold?
36. 36.True or false: to test it only once is good testing. (a) True (b) False
37. 37.🧪 Is it good or poor testing to hide a failed test? (a) good testing (b) poor testing
38. 38.🧪 The first prototype held 300 g. After the team improved it, the new prototype held 490 g. How many more grams did it hold?
39. 39.🧪 Is it good or poor testing to repeat each test? (a) poor testing (b) good testing
40. 40.True or false: to use the same load is poor testing. (a) True (b) False

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