Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 700 · 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 use a new load each time is good testing. (a) True (b) False
2. 2.True or false: to repeat each test is poor testing. (a) False (b) True
3. 3.🔍 Which is the odd one out? (a) hide a failed test (b) record every result (c) guess, do not measure (d) skip writing results
4. 4.🧪 The first prototype held 220 g. After the team improved it, the new prototype held 270 g. How many more grams did it hold?
5. 5.🔢 To build and test a straw bridge, what comes right after “sketch three ideas”? (a) read the challenge rules (b) build it with straws (c) choose and draw one (d) load it with coins
6. 6.True or false: to skip writing results is good testing. (a) True (b) False
7. 7.True or false: to record every result is good testing. (a) False (b) True
8. 8.True or false: to measure the same way is good testing. (a) True (b) False
9. 9.🧪 Is it good or poor testing to change only one thing? (a) poor testing (b) good testing
10. 10.🧪 Why do engineers make prototypes? (a) to sell them at once (b) to decorate a room (c) to avoid testing (d) to test ideas cheaply
11. 11.🔍 Which is the odd one out? (a) guess, do not measure (b) change only one thing (c) repeat each test (d) use the same load
12. 12.True or false: to change only one thing is poor testing. (a) False (b) True
13. 13.🧪 Is it good or poor testing to use a new load each time? (a) poor testing (b) good testing
14. 14.🔢 To build and test a straw bridge, which comes first: “build it with straws” or “choose and draw one”? (a) build it with straws (b) choose and draw one
15. 15.🧪 Three prototype bridges were tested with the same method. Design A held 160 g, design B held 210 g and design C held 260 g. Which design was the weakest? (a) design B (b) design A (c) design C
16. 16.🧪 Why repeat a test three times? (a) the first is wrong (b) it looks busy (c) to get reliable results (d) to use more paper
17. 17.🔍 Which is the odd one out? (a) use the same load (b) hide a failed test (c) measure the same way (d) change only one thing
18. 18.🧪 What is a prototype? (a) an early test model (b) the final product (c) a broken part (d) a sales poster
19. 19.🔍 Which is the odd one out? (a) guess, do not measure (b) test it only once (c) change only one thing (d) use a new load each time
20. 20.🔍 Which is the odd one out? (a) skip writing results (b) guess, do not measure (c) use a new load each time (d) repeat each test
21. 21.🧪 The first prototype held 300 g. After the team improved it, the new prototype held 350 g. How many more grams did it hold?
22. 22.True or false: to change only one thing is good testing. (a) False (b) True
23. 23.🧪 Three prototype bridges were tested with the same method. Design A held 340 g, design B held 290 g and design C held 240 g. Which design was the weakest? (a) design B (b) design A (c) design C
24. 24.🧪 Is it good or poor testing to use the same load? (a) good testing (b) poor testing
25. 25.🔍 Which is the odd one out? (a) change only one thing (b) repeat each test (c) measure the same way (d) skip writing results
26. 26.🔢 To build and test a straw bridge, which comes first: “choose and draw one” or “read the challenge rules”? (a) read the challenge rules (b) choose and draw one
27. 27.🧪 A paper bridge was tested three times. It held 450 g, 340 g and 260 g. What is the mean (average) load it held, in grams?
28. 28.🧪 A paper bridge was tested three times. It held 180 g, 140 g and 160 g. What is the mean (average) load it held, in grams?
29. 29.🧪 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 B (b) design A (c) design C
30. 30.🔢 To build and test a straw bridge, which comes first: “read the challenge rules” or “choose and draw one”? (a) read the challenge rules (b) choose and draw one
31. 31.🧪 Three prototype bridges were tested with the same method. Design A held 250 g, design B held 200 g and design C held 150 g. Which design was the strongest? (a) design A (b) design C (c) design B
32. 32.True or false: to change lots at once is poor testing. (a) False (b) True
33. 33.🧪 Is it good or poor testing to repeat each test? (a) good testing (b) poor testing
34. 34.🔢 To build and test a straw bridge, which comes first: “read the challenge rules” or “build it with straws”? (a) build it with straws (b) read the challenge rules
35. 35.🧪 A paper bridge was tested three times. It held 260 g, 130 g and 270 g. What is the mean (average) load it held, in grams?
36. 36.🧪 In a fair test, how many things do you change at a time? (a) all of them (b) one (c) none (d) two
37. 37.🧪 Is it good or poor testing to hide a failed test? (a) poor testing (b) good testing
38. 38.🔢 To build and test a straw bridge, what comes right after “load it with coins”? (a) build it with straws (b) choose and draw one (c) sketch three ideas (d) strengthen the weak part
39. 39.🔍 Which is the odd one out? (a) change lots at once (b) measure the same way (c) record every result (d) change only one thing
40. 40.True or false: to repeat each test is good testing. (a) True (b) False

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