Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 947 · 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.🔢 To build and test a straw bridge, which comes first: “choose and draw one” or “build it with straws”? (a) build it with straws (b) choose and draw one
2. 2.🔢 To build and test a straw bridge, what comes right after “load it with coins”? (a) choose and draw one (b) sketch three ideas (c) strengthen the weak part (d) read the challenge rules
3. 3.True or false: to change lots at once is good testing. (a) True (b) False
4. 4.🧪 Three prototype bridges were tested with the same method. Design A held 150 g, design B held 200 g and design C held 250 g. Which design was the strongest? (a) design B (b) design A (c) design C
5. 5.🧪 Why repeat a test three times? (a) it looks busy (b) to use more paper (c) to get reliable results (d) the first is wrong
6. 6.🧪 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?
7. 7.🔍 Which is the odd one out? (a) change only one thing (b) use a new load each time (c) change lots at once (d) skip writing results
8. 8.🧪 The first prototype held 230 g. After the team improved it, the new prototype held 330 g. How many more grams did it hold?
9. 9.🧪 Is it good or poor testing to record every result? (a) poor testing (b) good testing
10. 10.🔍 Which is the odd one out? (a) measure the same way (b) guess, do not measure (c) repeat each test (d) change only one thing
11. 11.True or false: to hide a failed test is poor testing. (a) False (b) True
12. 12.🧪 Three prototype bridges were tested with the same method. Design A held 230 g, design B held 330 g and design C held 280 g. Which design was the weakest? (a) design C (b) design A (c) design B
13. 13.🧪 Why do engineers make prototypes? (a) to test ideas cheaply (b) to decorate a room (c) to sell them at once (d) to avoid testing
14. 14.🧪 In a fair test, how many things do you change at a time? (a) none (b) all of them (c) one (d) two
15. 15.🧪 What is a prototype? (a) a sales poster (b) an early test model (c) the final product (d) a broken part
16. 16.🔢 To build and test a straw bridge, what comes right after “choose and draw one”? (a) build it with straws (b) read the challenge rules (c) strengthen the weak part (d) sketch three ideas
17. 17.🔢 To build and test a straw bridge, what comes right after “read the challenge rules”? (a) sketch three ideas (b) strengthen the weak part (c) build it with straws (d) choose and draw one
18. 18.🔍 Which is the odd one out? (a) test it only once (b) change lots at once (c) use the same load (d) hide a failed test
19. 19.🧪 Is it good or poor testing to repeat each test? (a) good testing (b) poor testing
20. 20.🧪 A paper bridge was tested three times. It held 290 g, 190 g and 360 g. What is the mean (average) load it held, in grams?
21. 21.🔢 To build and test a straw bridge, which comes first: “sketch three ideas” or “strengthen the weak part”? (a) sketch three ideas (b) strengthen the weak part
22. 22.🧪 The first prototype held 170 g. After the team improved it, the new prototype held 350 g. How many more grams did it hold?
23. 23.🧪 Is it good or poor testing to change only one thing? (a) poor testing (b) good testing
24. 24.True or false: to change lots at once is poor testing. (a) False (b) True
25. 25.True or false: to change only one thing is good testing. (a) False (b) True
26. 26.🧪 Is it good or poor testing to change lots at once? (a) good testing (b) poor testing
27. 27.🔢 To build and test a straw bridge, which comes first: “strengthen the weak part” or “choose and draw one”? (a) strengthen the weak part (b) choose and draw one
28. 28.🧪 Is it good or poor testing to use the same load? (a) good testing (b) poor testing
29. 29.True or false: to repeat each test is poor testing. (a) True (b) False
30. 30.🧪 Is it good or poor testing to hide a failed test? (a) poor testing (b) good testing
31. 31.True or false: to change only one thing is poor testing. (a) False (b) True
32. 32.🧪 Three prototype bridges were tested with the same method. Design A held 100 g, design B held 200 g and design C held 150 g. Which design was the weakest? (a) design B (b) design A (c) design C
33. 33.🧪 A paper bridge was tested three times. It held 210 g, 120 g and 270 g. What is the mean (average) load it held, in grams?
34. 34.🧪 A paper bridge was tested three times. It held 300 g, 130 g and 200 g. What is the mean (average) load it held, in grams?
35. 35.🔢 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) read the challenge rules (d) choose and draw one
36. 36.🔢 To build and test a straw bridge, which is the LAST step? (a) choose and draw one (b) load it with coins (c) build it with straws (d) strengthen the weak part
37. 37.🔍 Which is the odd one out? (a) hide a failed test (b) repeat each test (c) measure the same way (d) use the same load
38. 38.🧪 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 strongest? (a) design A (b) design C (c) design B
39. 39.True or false: to repeat each test is good testing. (a) False (b) True
40. 40.🧪 The first prototype held 170 g. After the team improved it, the new prototype held 320 g. How many more grams did it hold?

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