Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 176 · 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.🧪 Why do engineers make prototypes? (a) to sell them at once (b) to avoid testing (c) to test ideas cheaply (d) to decorate a room
2. 2.🧪 A paper bridge was tested three times. It held 270 g, 210 g and 180 g. What is the mean (average) load it held, in grams?
3. 3.🔍 Which is the odd one out? (a) measure the same way (b) repeat each test (c) guess, do not measure (d) record every result
4. 4.🧪 Three prototype bridges were tested with the same method. Design A held 280 g, design B held 230 g and design C held 180 g. Which design was the strongest? (a) design B (b) design C (c) design A
5. 5.🧪 A paper bridge was tested three times. It held 360 g, 240 g and 300 g. What is the mean (average) load it held, in grams?
6. 6.🧪 Is it good or poor testing to use the same load? (a) poor testing (b) good testing
7. 7.🧪 The first prototype held 140 g. After the team improved it, the new prototype held 200 g. How many more grams did it hold?
8. 8.🧪 The first prototype held 290 g. After the team improved it, the new prototype held 360 g. How many more grams did it hold?
9. 9.🧪 In a fair test, how many things do you change at a time? (a) all of them (b) two (c) one (d) none
10. 10.🔍 Which is the odd one out? (a) measure the same way (b) change only one thing (c) repeat each test (d) use a new load each time
11. 11.🧪 A paper bridge was tested three times. It held 300 g, 140 g and 250 g. What is the mean (average) load it held, in grams?
12. 12.🧪 Three prototype bridges were tested with the same method. Design A held 120 g, design B held 170 g and design C held 220 g. Which design was the strongest? (a) design B (b) design A (c) design C
13. 13.🧪 Why repeat a test three times? (a) to use more paper (b) it looks busy (c) to get reliable results (d) the first is wrong
14. 14.🧪 A paper bridge was tested three times. It held 170 g, 170 g and 170 g. What is the mean (average) load it held, in grams?
15. 15.🧪 Three prototype bridges were tested with the same method. Design A held 320 g, design B held 220 g and design C held 270 g. Which design was the strongest? (a) design B (b) design C (c) design A
16. 16.🔍 Which is the odd one out? (a) use the same load (b) change lots at once (c) change only one thing (d) record every result
17. 17.True or false: to use a new load each time is poor testing. (a) False (b) True
18. 18.True or false: to change lots at once is poor testing. (a) False (b) True
19. 19.🧪 What is a prototype? (a) a broken part (b) the final product (c) a sales poster (d) an early test model
20. 20.🔢 To build and test a straw bridge, which comes first: “strengthen the weak part” or “sketch three ideas”? (a) sketch three ideas (b) strengthen the weak part
21. 21.🧪 Three prototype bridges were tested with the same method. Design A held 310 g, design B held 260 g and design C held 360 g. Which design was the strongest? (a) design B (b) design A (c) design C
22. 22.🔢 To build and test a straw bridge, which comes first: “strengthen the weak part” or “load it with coins”? (a) strengthen the weak part (b) load it with coins
23. 23.True or false: to record every result is good testing. (a) False (b) True
24. 24.🧪 Is it good or poor testing to measure the same way? (a) good testing (b) poor testing
25. 25.🧪 Is it good or poor testing to use a new load each time? (a) good testing (b) poor testing
26. 26.🧪 Is it good or poor testing to repeat each test? (a) poor testing (b) good testing
27. 27.🔍 Which is the odd one out? (a) skip writing results (b) measure the same way (c) change only one thing (d) use the same load
28. 28.🧪 A paper bridge was tested three times. It held 380 g, 260 g and 260 g. What is the mean (average) load it held, in grams?
29. 29.🧪 Is it good or poor testing to test it only once? (a) good testing (b) poor testing
30. 30.True or false: to hide a failed test is poor testing. (a) False (b) True
31. 31.🧪 A paper bridge was tested three times. It held 360 g, 230 g and 340 g. What is the mean (average) load it held, in grams?
32. 32.🔢 To build and test a straw bridge, which comes first: “read the challenge rules” or “strengthen the weak part”? (a) strengthen the weak part (b) read the challenge rules
33. 33.🔍 Which is the odd one out? (a) test it only once (b) use a new load each time (c) change lots at once (d) use the same load
34. 34.🧪 Is it good or poor testing to guess, do not measure? (a) poor testing (b) good testing
35. 35.🔢 To build and test a straw bridge, which is the LAST step? (a) build it with straws (b) choose and draw one (c) sketch three ideas (d) strengthen the weak part
36. 36.🧪 Three prototype bridges were tested with the same method. Design A held 300 g, design B held 400 g and design C held 350 g. Which design was the strongest? (a) design C (b) design A (c) design B
37. 37.🧪 A paper bridge was tested three times. It held 240 g, 160 g and 290 g. What is the mean (average) load it held, in grams?
38. 38.🔢 To build and test a straw bridge, what comes right after “build it with straws”? (a) choose and draw one (b) sketch three ideas (c) strengthen the weak part (d) load it with coins
39. 39.🔍 Which is the odd one out? (a) record every result (b) test it only once (c) change lots at once (d) use a new load each time
40. 40.🧪 A paper bridge was tested three times. It held 330 g, 180 g and 180 g. What is the mean (average) load it held, in grams?

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