Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 26 · 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.🧪 Is it good or poor testing to use a new load each time? (a) poor testing (b) good testing
2. 2.🔢 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
3. 3.🔍 Which is the odd one out? (a) guess, do not measure (b) repeat each test (c) measure the same way (d) change only one thing
4. 4.🔢 To build and test a straw bridge, which is the FIRST step? (a) build it with straws (b) read the challenge rules (c) sketch three ideas (d) strengthen the weak part
5. 5.🧪 The first prototype held 120 g. After the team improved it, the new prototype held 180 g. How many more grams did it hold?
6. 6.🔢 To build and test a straw bridge, which comes first: “build it with straws” or “sketch three ideas”? (a) sketch three ideas (b) build it with straws
7. 7.🧪 A paper bridge was tested three times. It held 310 g, 240 g and 230 g. What is the mean (average) load it held, in grams?
8. 8.🔍 Which is the odd one out? (a) hide a failed test (b) measure the same way (c) guess, do not measure (d) change lots at once
9. 9.🧪 A paper bridge was tested three times. It held 210 g, 140 g and 190 g. What is the mean (average) load it held, in grams?
10. 10.True or false: to change only one thing is poor testing. (a) False (b) True
11. 11.🧪 The first prototype held 60 g. After the team improved it, the new prototype held 200 g. How many more grams did it hold?
12. 12.True or false: to measure the same way is good testing. (a) True (b) False
13. 13.🧪 A paper bridge was tested three times. It held 380 g, 260 g and 200 g. What is the mean (average) load it held, in grams?
14. 14.True or false: to test it only once is good testing. (a) True (b) False
15. 15.🔍 Which is the odd one out? (a) guess, do not measure (b) hide a failed test (c) repeat each test (d) test it only once
16. 16.🧪 Is it good or poor testing to change lots at once? (a) good testing (b) poor testing
17. 17.🧪 A paper bridge was tested three times. It held 290 g, 110 g and 200 g. What is the mean (average) load it held, in grams?
18. 18.🧪 Is it good or poor testing to change only one thing? (a) poor testing (b) good testing
19. 19.🧪 Is it good or poor testing to test it only once? (a) good testing (b) poor testing
20. 20.🧪 Why do engineers make prototypes? (a) to decorate a room (b) to test ideas cheaply (c) to avoid testing (d) to sell them at once
21. 21.🔢 To build and test a straw bridge, which is the LAST step? (a) strengthen the weak part (b) choose and draw one (c) read the challenge rules (d) build it with straws
22. 22.🔍 Which is the odd one out? (a) test it only once (b) guess, do not measure (c) use the same load (d) skip writing results
23. 23.🧪 What is a prototype? (a) a broken part (b) a sales poster (c) the final product (d) an early test model
24. 24.🧪 The first prototype held 270 g. After the team improved it, the new prototype held 470 g. How many more grams did it hold?
25. 25.True or false: to hide a failed test is good testing. (a) False (b) True
26. 26.True or false: to guess, do not measure is poor testing. (a) False (b) True
27. 27.True or false: to measure the same way is poor testing. (a) False (b) True
28. 28.🧪 A paper bridge was tested three times. It held 250 g, 200 g and 150 g. What is the mean (average) load it held, in grams?
29. 29.True or false: to repeat each test is good testing. (a) True (b) False
30. 30.🧪 Three prototype bridges were tested with the same method. Design A held 250 g, design B held 200 g and design C held 300 g. Which design was the weakest? (a) design B (b) design C (c) design A
31. 31.🔍 Which is the odd one out? (a) use the same load (b) change only one thing (c) record every result (d) use a new load each time
32. 32.🧪 Why repeat a test three times? (a) the first is wrong (b) to use more paper (c) to get reliable results (d) it looks busy
33. 33.🔢 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
34. 34.🧪 The first prototype held 170 g. After the team improved it, the new prototype held 330 g. How many more grams did it hold?
35. 35.🧪 Is it good or poor testing to measure the same way? (a) good testing (b) poor testing
36. 36.🧪 The first prototype held 240 g. After the team improved it, the new prototype held 340 g. How many more grams did it hold?
37. 37.🧪 Is it good or poor testing to repeat each test? (a) good testing (b) poor testing
38. 38.True or false: to change lots at once is poor testing. (a) True (b) False
39. 39.🧪 A paper bridge was tested three times. It held 250 g, 130 g and 100 g. What is the mean (average) load it held, in grams?
40. 40.🧪 Three prototype bridges were tested with the same method. Design A held 110 g, design B held 160 g and design C held 210 g. Which design was the strongest? (a) design A (b) design B (c) design C

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