Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 750 · 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 240 g, 220 g and 230 g. What is the mean (average) load it held, in grams?
2. 2.🔍 Which is the odd one out? (a) use the same load (b) use a new load each time (c) record every result (d) repeat each test
3. 3.🔢 To build and test a straw bridge, which comes first: “sketch three ideas” or “read the challenge rules”? (a) read the challenge rules (b) sketch three ideas
4. 4.True or false: to change only one thing is poor testing. (a) False (b) True
5. 5.🔍 Which is the odd one out? (a) hide a failed test (b) measure the same way (c) test it only once (d) skip writing results
6. 6.🧪 In a fair test, how many things do you change at a time? (a) none (b) all of them (c) two (d) one
7. 7.🧪 What is a prototype? (a) a broken part (b) the final product (c) a sales poster (d) an early test model
8. 8.🔍 Which is the odd one out? (a) record every result (b) change lots at once (c) measure the same way (d) change only one thing
9. 9.🧪 A paper bridge was tested three times. It held 260 g, 90 g and 160 g. What is the mean (average) load it held, in grams?
10. 10.🔍 Which is the odd one out? (a) change only one thing (b) guess, do not measure (c) record every result (d) repeat each test
11. 11.🧪 Is it good or poor testing to change lots at once? (a) good testing (b) poor testing
12. 12.🧪 Is it good or poor testing to hide a failed test? (a) poor testing (b) good testing
13. 13.🧪 Three prototype bridges were tested with the same method. Design A held 190 g, design B held 240 g and design C held 290 g. Which design was the strongest? (a) design C (b) design B (c) design A
14. 14.🔍 Which is the odd one out? (a) use the same load (b) guess, do not measure (c) change lots at once (d) test it only once
15. 15.🔢 To build and test a straw bridge, which comes first: “load it with coins” or “build it with straws”? (a) load it with coins (b) build it with straws
16. 16.🔢 To build and test a straw bridge, which is the LAST step? (a) strengthen the weak part (b) build it with straws (c) sketch three ideas (d) load it with coins
17. 17.🧪 Why repeat a test three times? (a) to get reliable results (b) to use more paper (c) the first is wrong (d) it looks busy
18. 18.True or false: to change only one thing is good testing. (a) True (b) False
19. 19.True or false: to hide a failed test is good testing. (a) False (b) True
20. 20.🧪 Is it good or poor testing to use a new load each time? (a) poor testing (b) good testing
21. 21.🧪 A paper bridge was tested three times. It held 380 g, 250 g and 300 g. What is the mean (average) load it held, in grams?
22. 22.🧪 The first prototype held 50 g. After the team improved it, the new prototype held 100 g. How many more grams did it hold?
23. 23.True or false: to use the same load is poor testing. (a) False (b) True
24. 24.🧪 The first prototype held 180 g. After the team improved it, the new prototype held 360 g. How many more grams did it hold?
25. 25.🧪 The first prototype held 210 g. After the team improved it, the new prototype held 270 g. How many more grams did it hold?
26. 26.🧪 Three prototype bridges were tested with the same method. Design A held 220 g, design B held 270 g and design C held 170 g. Which design was the strongest? (a) design B (b) design A (c) design C
27. 27.True or false: to guess, do not measure is poor testing. (a) True (b) False
28. 28.🔢 To build and test a straw bridge, what comes right after “load it with coins”? (a) sketch three ideas (b) build it with straws (c) read the challenge rules (d) strengthen the weak part
29. 29.🔢 To build and test a straw bridge, which comes first: “read the challenge rules” or “choose and draw one”? (a) read the challenge rules (b) choose and draw one
30. 30.🧪 Is it good or poor testing to test it only once? (a) good testing (b) poor testing
31. 31.🧪 Three prototype bridges were tested with the same method. Design A held 360 g, design B held 310 g and design C held 260 g. Which design was the weakest? (a) design C (b) design A (c) design B
32. 32.True or false: to measure the same way is poor testing. (a) True (b) False
33. 33.🔢 To build and test a straw bridge, which comes first: “load it with coins” or “read the challenge rules”? (a) read the challenge rules (b) load it with coins
34. 34.🔢 To build and test a straw bridge, what comes right after “build it with straws”? (a) read the challenge rules (b) strengthen the weak part (c) sketch three ideas (d) load it with coins
35. 35.🧪 A paper bridge was tested three times. It held 250 g, 100 g and 250 g. What is the mean (average) load it held, in grams?
36. 36.True or false: to measure the same way is good testing. (a) False (b) True
37. 37.True or false: to guess, do not measure is good testing. (a) False (b) True
38. 38.True or false: to use a new load each time is good testing. (a) True (b) False
39. 39.🧪 A paper bridge was tested three times. It held 230 g, 150 g and 310 g. What is the mean (average) load it held, in grams?
40. 40.🧪 Why do engineers make prototypes? (a) to sell them at once (b) to decorate a room (c) to test ideas cheaply (d) to avoid testing

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