Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 955 · 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) read the challenge rules (c) choose and draw one (d) sketch three ideas
2. 2.🔍 Which is the odd one out? (a) record every result (b) hide a failed test (c) change only one thing (d) measure the same way
3. 3.🧪 Why do engineers make prototypes? (a) to test ideas cheaply (b) to avoid testing (c) to decorate a room (d) to sell them at once
4. 4.🧪 Is it good or poor testing to measure the same way? (a) good testing (b) poor testing
5. 5.True or false: to skip writing results is good testing. (a) False (b) True
6. 6.🧪 A paper bridge was tested three times. It held 250 g, 220 g and 190 g. What is the mean (average) load it held, in grams?
7. 7.🧪 In a fair test, how many things do you change at a time? (a) one (b) all of them (c) none (d) two
8. 8.🧪 Three prototype bridges were tested with the same method. Design A held 240 g, design B held 190 g and design C held 140 g. Which design was the weakest? (a) design C (b) design B (c) design A
9. 9.True or false: to skip writing results is poor testing. (a) True (b) False
10. 10.🔢 To build and test a straw bridge, which comes first: “sketch three ideas” or “strengthen the weak part”? (a) strengthen the weak part (b) sketch three ideas
11. 11.True or false: to test it only once is poor testing. (a) True (b) False
12. 12.🔍 Which is the odd one out? (a) change only one thing (b) repeat each test (c) skip writing results (d) record every result
13. 13.🧪 The first prototype held 180 g. After the team improved it, the new prototype held 190 g. How many more grams did it hold?
14. 14.True or false: to record every result is good testing. (a) False (b) True
15. 15.🧪 Is it good or poor testing to test it only once? (a) good testing (b) poor testing
16. 16.🔢 To build and test a straw bridge, which is the LAST step? (a) sketch three ideas (b) strengthen the weak part (c) choose and draw one (d) read the challenge rules
17. 17.🧪 Is it good or poor testing to change only one thing? (a) good testing (b) poor testing
18. 18.🧪 The first prototype held 70 g. After the team improved it, the new prototype held 210 g. How many more grams did it hold?
19. 19.🔍 Which is the odd one out? (a) hide a failed test (b) skip writing results (c) guess, do not measure (d) use the same load
20. 20.True or false: to change only one thing is poor testing. (a) True (b) False
21. 21.🧪 The first prototype held 170 g. After the team improved it, the new prototype held 240 g. How many more grams did it hold?
22. 22.🔍 Which is the odd one out? (a) test it only once (b) use a new load each time (c) change lots at once (d) repeat each test
23. 23.🧪 A paper bridge was tested three times. It held 270 g, 160 g and 230 g. What is the mean (average) load it held, in grams?
24. 24.🔍 Which is the odd one out? (a) change only one thing (b) change lots at once (c) use the same load (d) record every result
25. 25.True or false: to use the same load is good testing. (a) False (b) True
26. 26.🧪 Is it good or poor testing to guess, do not measure? (a) good testing (b) poor testing
27. 27.🧪 The first prototype held 130 g. After the team improved it, the new prototype held 330 g. How many more grams did it hold?
28. 28.🧪 A paper bridge was tested three times. It held 380 g, 180 g and 280 g. What is the mean (average) load it held, in grams?
29. 29.🔍 Which is the odd one out? (a) use the same load (b) record every result (c) guess, do not measure (d) repeat each test
30. 30.🔢 To build and test a straw bridge, which comes first: “strengthen the weak part” or “choose and draw one”? (a) choose and draw one (b) strengthen the weak part
31. 31.🧪 The first prototype held 100 g. After the team improved it, the new prototype held 130 g. How many more grams did it hold?
32. 32.🧪 Why repeat a test three times? (a) to use more paper (b) the first is wrong (c) it looks busy (d) to get reliable results
33. 33.🔢 To build and test a straw bridge, what comes right after “build it with straws”? (a) strengthen the weak part (b) load it with coins (c) read the challenge rules (d) choose and draw one
34. 34.🧪 A paper bridge was tested three times. It held 260 g, 260 g and 260 g. What is the mean (average) load it held, in grams?
35. 35.True or false: to use a new load each time is good testing. (a) False (b) True
36. 36.🧪 Is it good or poor testing to change lots at once? (a) poor testing (b) good testing
37. 37.🧪 The first prototype held 150 g. After the team improved it, the new prototype held 320 g. How many more grams did it hold?
38. 38.🔢 To build and test a straw bridge, which comes first: “build it with straws” or “sketch three ideas”? (a) build it with straws (b) sketch three ideas
39. 39.🧪 The first prototype held 120 g. After the team improved it, the new prototype held 270 g. How many more grams did it hold?
40. 40.🧪 What is a prototype? (a) the final product (b) a broken part (c) an early test model (d) a sales poster

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