Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 172 · 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) record every result (d) use a new load each time
2. 2.🧪 Why repeat a test three times? (a) to get reliable results (b) it looks busy (c) the first is wrong (d) to use more paper
3. 3.🔢 To build and test a straw bridge, which is the LAST step? (a) strengthen the weak part (b) read the challenge rules (c) sketch three ideas (d) build it with straws
4. 4.🔍 Which is the odd one out? (a) record every result (b) hide a failed test (c) use the same load (d) measure the same way
5. 5.🧪 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 weakest? (a) design C (b) design A (c) design B
6. 6.True or false: to guess, do not measure is good testing. (a) True (b) False
7. 7.🧪 In a fair test, how many things do you change at a time? (a) none (b) two (c) all of them (d) one
8. 8.True or false: to record every result is poor testing. (a) False (b) True
9. 9.True or false: to use the same load is poor testing. (a) False (b) True
10. 10.True or false: to record every result is good testing. (a) False (b) True
11. 11.🔍 Which is the odd one out? (a) change lots at once (b) skip writing results (c) guess, do not measure (d) change only one thing
12. 12.🧪 Three prototype bridges were tested with the same method. Design A held 280 g, design B held 330 g and design C held 380 g. Which design was the weakest? (a) design A (b) design B (c) design C
13. 13.🔍 Which is the odd one out? (a) skip writing results (b) test it only once (c) use the same load (d) guess, do not measure
14. 14.🔢 To build and test a straw bridge, what comes right after “build it with straws”? (a) choose and draw one (b) strengthen the weak part (c) read the challenge rules (d) load it with coins
15. 15.🔍 Which is the odd one out? (a) skip writing results (b) change lots at once (c) use a new load each time (d) record every result
16. 16.🧪 Is it good or poor testing to record every result? (a) good testing (b) poor testing
17. 17.🧪 A paper bridge was tested three times. It held 370 g, 240 g and 410 g. What is the mean (average) load it held, in grams?
18. 18.🔍 Which is the odd one out? (a) repeat each test (b) measure the same way (c) skip writing results (d) change only one thing
19. 19.True or false: to use a new load each time is good testing. (a) True (b) False
20. 20.🧪 The first prototype held 270 g. After the team improved it, the new prototype held 430 g. How many more grams did it hold?
21. 21.🧪 A paper bridge was tested three times. It held 320 g, 210 g and 190 g. What is the mean (average) load it held, in grams?
22. 22.🔢 To build and test a straw bridge, which comes first: “load it with coins” or “read the challenge rules”? (a) load it with coins (b) read the challenge rules
23. 23.🔍 Which is the odd one out? (a) repeat each test (b) test it only once (c) measure the same way (d) change only one thing
24. 24.🧪 The first prototype held 230 g. After the team improved it, the new prototype held 300 g. How many more grams did it hold?
25. 25.🧪 Is it good or poor testing to use a new load each time? (a) good testing (b) poor testing
26. 26.🧪 Three prototype bridges were tested with the same method. Design A held 300 g, design B held 350 g and design C held 400 g. Which design was the weakest? (a) design B (b) design C (c) design A
27. 27.True or false: to repeat each test is poor testing. (a) False (b) True
28. 28.True or false: to skip writing results is good testing. (a) True (b) False
29. 29.🧪 Is it good or poor testing to measure the same way? (a) poor testing (b) good testing
30. 30.🧪 A paper bridge was tested three times. It held 260 g, 130 g and 150 g. What is the mean (average) load it held, in grams?
31. 31.🧪 Is it good or poor testing to change only one thing? (a) good testing (b) poor testing
32. 32.🧪 What is a prototype? (a) a broken part (b) a sales poster (c) an early test model (d) the final product
33. 33.🧪 Three prototype bridges were tested with the same method. Design A held 270 g, design B held 220 g and design C held 320 g. Which design was the strongest? (a) design B (b) design A (c) design C
34. 34.🧪 A paper bridge was tested three times. It held 150 g, 110 g and 190 g. What is the mean (average) load it held, in grams?
35. 35.🧪 Why do engineers make prototypes? (a) to test ideas cheaply (b) to avoid testing (c) to sell them at once (d) to decorate a room
36. 36.🔍 Which is the odd one out? (a) test it only once (b) use a new load each time (c) repeat each test (d) hide a failed test
37. 37.🔍 Which is the odd one out? (a) measure the same way (b) record every result (c) repeat each test (d) guess, do not measure
38. 38.🧪 A paper bridge was tested three times. It held 250 g, 140 g and 150 g. What is the mean (average) load it held, in grams?
39. 39.True or false: to repeat each test is good testing. (a) False (b) True
40. 40.🧪 The first prototype held 70 g. After the team improved it, the new prototype held 110 g. How many more grams did it hold?

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