Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 631 · 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.🧪 A paper bridge was tested three times. It held 330 g, 300 g and 300 g. What is the mean (average) load it held, in grams?
2. 2.🔍 Which is the odd one out? (a) guess, do not measure (b) change lots at once (c) use a new load each time (d) change only one thing
3. 3.🔍 Which is the odd one out? (a) record every result (b) change lots at once (c) use a new load each time (d) hide a failed test
4. 4.🔢 To build and test a straw bridge, which is the LAST step? (a) load it with coins (b) sketch three ideas (c) strengthen the weak part (d) choose and draw one
5. 5.🧪 Why repeat a test three times? (a) to use more paper (b) to get reliable results (c) the first is wrong (d) it looks busy
6. 6.True or false: to test it only once is good testing. (a) True (b) False
7. 7.🧪 Is it good or poor testing to change lots at once? (a) good testing (b) poor testing
8. 8.🧪 In a fair test, how many things do you change at a time? (a) one (b) none (c) two (d) all of them
9. 9.🧪 The first prototype held 100 g. After the team improved it, the new prototype held 190 g. How many more grams did it hold?
10. 10.🧪 A paper bridge was tested three times. It held 320 g, 180 g and 310 g. What is the mean (average) load it held, in grams?
11. 11.True or false: to use the same load is poor testing. (a) True (b) False
12. 12.🧪 Is it good or poor testing to repeat each test? (a) poor testing (b) good testing
13. 13.🔢 To build and test a straw bridge, which comes first: “strengthen the weak part” or “read the challenge rules”? (a) read the challenge rules (b) strengthen the weak part
14. 14.🧪 Is it good or poor testing to hide a failed test? (a) good testing (b) poor testing
15. 15.🔍 Which is the odd one out? (a) guess, do not measure (b) measure the same way (c) skip writing results (d) hide a failed test
16. 16.🧪 Three prototype bridges were tested with the same method. Design A held 270 g, design B held 320 g and design C held 370 g. Which design was the strongest? (a) design C (b) design B (c) design A
17. 17.🧪 The first prototype held 150 g. After the team improved it, the new prototype held 190 g. How many more grams did it hold?
18. 18.🔢 To build and test a straw bridge, which is the FIRST step? (a) read the challenge rules (b) load it with coins (c) sketch three ideas (d) choose and draw one
19. 19.🔢 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
20. 20.🧪 A paper bridge was tested three times. It held 330 g, 220 g and 350 g. What is the mean (average) load it held, in grams?
21. 21.🧪 Three prototype bridges were tested with the same method. Design A held 170 g, design B held 270 g and design C held 220 g. Which design was the weakest? (a) design C (b) design A (c) design B
22. 22.🔍 Which is the odd one out? (a) test it only once (b) use the same load (c) change only one thing (d) repeat each test
23. 23.🧪 A paper bridge was tested three times. It held 390 g, 270 g and 270 g. What is the mean (average) load it held, in grams?
24. 24.True or false: to record every result is poor testing. (a) False (b) True
25. 25.🧪 Why do engineers make prototypes? (a) to avoid testing (b) to test ideas cheaply (c) to sell them at once (d) to decorate a room
26. 26.True or false: to use a new load each time is poor testing. (a) False (b) True
27. 27.🧪 Three prototype bridges were tested with the same method. Design A held 330 g, design B held 280 g and design C held 230 g. Which design was the strongest? (a) design C (b) design B (c) design A
28. 28.🔍 Which is the odd one out? (a) repeat each test (b) record every result (c) hide a failed test (d) change only one thing
29. 29.🔢 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
30. 30.🔢 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
31. 31.🔍 Which is the odd one out? (a) repeat each test (b) change only one thing (c) measure the same way (d) guess, do not measure
32. 32.🧪 Is it good or poor testing to record every result? (a) poor testing (b) good testing
33. 33.True or false: to change lots at once is good testing. (a) False (b) True
34. 34.🧪 Three prototype bridges were tested with the same method. Design A held 340 g, design B held 390 g and design C held 290 g. Which design was the strongest? (a) design B (b) design A (c) design C
35. 35.🧪 A paper bridge was tested three times. It held 260 g, 120 g and 190 g. What is the mean (average) load it held, in grams?
36. 36.🧪 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 weakest? (a) design A (b) design B (c) design C
37. 37.True or false: to measure the same way is poor testing. (a) False (b) True
38. 38.🧪 What is a prototype? (a) a sales poster (b) an early test model (c) a broken part (d) the final product
39. 39.🧪 A paper bridge was tested three times. It held 280 g, 160 g and 340 g. What is the mean (average) load it held, in grams?
40. 40.🧪 The first prototype held 200 g. After the team improved it, the new prototype held 390 g. How many more grams did it hold?

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