Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 975 · 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.True or false: to hide a failed test is poor testing. (a) False (b) True
2. 2.🧪 The first prototype held 70 g. After the team improved it, the new prototype held 250 g. How many more grams did it hold?
3. 3.🧪 In a fair test, how many things do you change at a time? (a) all of them (b) none (c) one (d) two
4. 4.🧪 Why do engineers make prototypes? (a) to sell them at once (b) to avoid testing (c) to test ideas cheaply (d) to decorate a room
5. 5.🧪 A paper bridge was tested three times. It held 260 g, 230 g and 230 g. What is the mean (average) load it held, in grams?
6. 6.True or false: to test it only once is good testing. (a) False (b) True
7. 7.🔍 Which is the odd one out? (a) change only one thing (b) test it only once (c) repeat each test (d) use the same load
8. 8.🔍 Which is the odd one out? (a) use the same load (b) record every result (c) guess, do not measure (d) change only one thing
9. 9.🧪 What is a prototype? (a) an early test model (b) the final product (c) a broken part (d) a sales poster
10. 10.True or false: to skip writing results is poor testing. (a) True (b) False
11. 11.🔍 Which is the odd one out? (a) use a new load each time (b) use the same load (c) hide a failed test (d) change lots at once
12. 12.🧪 The first prototype held 110 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 is the FIRST step? (a) sketch three ideas (b) choose and draw one (c) read the challenge rules (d) strengthen the weak part
14. 14.True or false: to guess, do not measure is poor testing. (a) False (b) True
15. 15.True or false: to guess, do not measure is good testing. (a) True (b) False
16. 16.🧪 A paper bridge was tested three times. It held 270 g, 260 g and 280 g. What is the mean (average) load it held, in grams?
17. 17.🧪 The first prototype held 250 g. After the team improved it, the new prototype held 450 g. How many more grams did it hold?
18. 18.🔍 Which is the odd one out? (a) measure the same way (b) skip writing results (c) guess, do not measure (d) use a new load each time
19. 19.True or false: to skip writing results is good testing. (a) False (b) True
20. 20.🧪 Three prototype bridges were tested with the same method. Design A held 120 g, design B held 170 g and design C held 220 g. Which design was the strongest? (a) design A (b) design C (c) design B
21. 21.🧪 A paper bridge was tested three times. It held 230 g, 180 g and 190 g. What is the mean (average) load it held, in grams?
22. 22.🧪 The first prototype held 230 g. After the team improved it, the new prototype held 280 g. How many more grams did it hold?
23. 23.True or false: to use the same load is poor testing. (a) True (b) False
24. 24.🔍 Which is the odd one out? (a) change only one thing (b) measure the same way (c) repeat each test (d) change lots at once
25. 25.🧪 Why repeat a test three times? (a) the first is wrong (b) it looks busy (c) to use more paper (d) to get reliable results
26. 26.🧪 A paper bridge was tested three times. It held 220 g, 80 g and 180 g. What is the mean (average) load it held, in grams?
27. 27.🧪 Is it good or poor testing to measure the same way? (a) poor testing (b) good testing
28. 28.🧪 The first prototype held 240 g. After the team improved it, the new prototype held 310 g. How many more grams did it hold?
29. 29.🧪 A paper bridge was tested three times. It held 280 g, 200 g and 180 g. What is the mean (average) load it held, in grams?
30. 30.True or false: to change only one thing is good testing. (a) False (b) True
31. 31.🔍 Which is the odd one out? (a) test it only once (b) record every result (c) guess, do not measure (d) use a new load each time
32. 32.🧪 Three prototype bridges were tested with the same method. Design A held 220 g, design B held 170 g and design C held 270 g. Which design was the weakest? (a) design A (b) design C (c) design B
33. 33.🧪 The first prototype held 200 g. After the team improved it, the new prototype held 230 g. How many more grams did it hold?
34. 34.True or false: to measure the same way is good testing. (a) False (b) True
35. 35.🔢 To build and test a straw bridge, which comes first: “build it with straws” or “read the challenge rules”? (a) read the challenge rules (b) build it with straws
36. 36.🔍 Which is the odd one out? (a) record every result (b) use the same load (c) change only one thing (d) use a new load each time
37. 37.True or false: to change only one thing is poor testing. (a) True (b) False
38. 38.🔢 To build and test a straw bridge, which is the LAST step? (a) choose and draw one (b) strengthen the weak part (c) read the challenge rules (d) sketch three ideas
39. 39.🔢 To build and test a straw bridge, what comes right after “load it with coins”? (a) strengthen the weak part (b) build it with straws (c) choose and draw one (d) sketch three ideas
40. 40.🧪 Is it good or poor testing to use the same load? (a) good testing (b) poor testing

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