Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 390 · 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 is the FIRST step? (a) strengthen the weak part (b) sketch three ideas (c) read the challenge rules (d) load it with coins
2. 2.True or false: to measure the same way is poor testing. (a) True (b) False
3. 3.🔢 To build and test a straw bridge, which comes first: “build it with straws” or “read the challenge rules”? (a) build it with straws (b) read the challenge rules
4. 4.🔢 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
5. 5.🔍 Which is the odd one out? (a) skip writing results (b) use the same load (c) repeat each test (d) measure the same way
6. 6.🧪 The first prototype held 290 g. After the team improved it, the new prototype held 370 g. How many more grams did it hold?
7. 7.🧪 Three prototype bridges were tested with the same method. Design A held 230 g, design B held 130 g and design C held 180 g. Which design was the weakest? (a) design C (b) design B (c) design A
8. 8.🧪 Is it good or poor testing to guess, do not measure? (a) poor testing (b) good testing
9. 9.🧪 Is it good or poor testing to hide a failed test? (a) poor testing (b) good testing
10. 10.🧪 A paper bridge was tested three times. It held 340 g, 210 g and 200 g. What is the mean (average) load it held, in grams?
11. 11.🧪 The first prototype held 230 g. After the team improved it, the new prototype held 350 g. How many more grams did it hold?
12. 12.🧪 The first prototype held 80 g. After the team improved it, the new prototype held 140 g. How many more grams did it hold?
13. 13.🔢 To build and test a straw bridge, which comes first: “choose and draw one” or “sketch three ideas”? (a) sketch three ideas (b) choose and draw one
14. 14.True or false: to use a new load each time is good testing. (a) False (b) True
15. 15.🔍 Which is the odd one out? (a) guess, do not measure (b) use the same load (c) measure the same way (d) record every result
16. 16.🧪 The first prototype held 60 g. After the team improved it, the new prototype held 70 g. How many more grams did it hold?
17. 17.True or false: to guess, do not measure is good testing. (a) True (b) False
18. 18.True or false: to test it only once is good testing. (a) False (b) True
19. 19.True or false: to change lots at once is poor testing. (a) True (b) False
20. 20.🧪 Is it good or poor testing to repeat each test? (a) poor testing (b) good testing
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 130 g. After the team improved it, the new prototype held 330 g. How many more grams did it hold?
23. 23.🔍 Which is the odd one out? (a) change only one thing (b) hide a failed test (c) skip writing results (d) use a new load each time
24. 24.🧪 Three prototype bridges were tested with the same method. Design A held 230 g, design B held 180 g and design C held 280 g. Which design was the strongest? (a) design A (b) design B (c) design C
25. 25.🧪 What is a prototype? (a) a sales poster (b) the final product (c) an early test model (d) a broken part
26. 26.🧪 A paper bridge was tested three times. It held 440 g, 300 g and 280 g. What is the mean (average) load it held, in grams?
27. 27.True or false: to repeat each test is poor testing. (a) True (b) False
28. 28.🧪 Three prototype bridges were tested with the same method. Design A held 350 g, design B held 250 g and design C held 300 g. Which design was the strongest? (a) design B (b) design A (c) design C
29. 29.🧪 The first prototype held 270 g. After the team improved it, the new prototype held 420 g. How many more grams did it hold?
30. 30.🧪 Why do engineers make prototypes? (a) to avoid testing (b) to decorate a room (c) to test ideas cheaply (d) to sell them at once
31. 31.True or false: to skip writing results is good testing. (a) True (b) False
32. 32.🧪 Why repeat a test three times? (a) to get reliable results (b) it looks busy (c) to use more paper (d) the first is wrong
33. 33.🔍 Which is the odd one out? (a) change lots at once (b) use a new load each time (c) test it only once (d) record every result
34. 34.🧪 A paper bridge was tested three times. It held 260 g, 110 g and 140 g. What is the mean (average) load it held, in grams?
35. 35.🔢 To build and test a straw bridge, what comes right after “build it with straws”? (a) read the challenge rules (b) load it with coins (c) strengthen the weak part (d) sketch three ideas
36. 36.🧪 A paper bridge was tested three times. It held 200 g, 60 g and 220 g. What is the mean (average) load it held, in grams?
37. 37.🧪 A paper bridge was tested three times. It held 360 g, 270 g and 390 g. What is the mean (average) load it held, in grams?
38. 38.🧪 Is it good or poor testing to change only one thing? (a) poor testing (b) good testing
39. 39.🧪 In a fair test, how many things do you change at a time? (a) two (b) all of them (c) one (d) none
40. 40.🧪 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 weakest? (a) design C (b) design A (c) design B

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