Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 840 · 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 guess, do not measure? (a) good testing (b) poor testing
2. 2.🧪 What is a prototype? (a) a sales poster (b) an early test model (c) the final product (d) a broken part
3. 3.🔍 Which is the odd one out? (a) record every result (b) use a new load each time (c) use the same load (d) measure the same way
4. 4.🔍 Which is the odd one out? (a) change only one thing (b) record every result (c) change lots at once (d) use the same load
5. 5.True or false: to skip writing results is poor testing. (a) False (b) True
6. 6.True or false: to use a new load each time is good testing. (a) False (b) True
7. 7.🧪 Three prototype bridges were tested with the same method. Design A held 230 g, design B held 280 g and design C held 180 g. Which design was the strongest? (a) design C (b) design A (c) design B
8. 8.🔍 Which is the odd one out? (a) use a new load each time (b) test it only once (c) hide a failed test (d) use the same load
9. 9.🧪 A paper bridge was tested three times. It held 300 g, 180 g and 240 g. What is the mean (average) load it held, in grams?
10. 10.🧪 Is it good or poor testing to change lots at once? (a) good testing (b) poor testing
11. 11.🧪 Why repeat a test three times? (a) it looks busy (b) to get reliable results (c) the first is wrong (d) to use more paper
12. 12.True or false: to use the same load is poor testing. (a) False (b) True
13. 13.🧪 Is it good or poor testing to repeat each test? (a) good testing (b) poor testing
14. 14.🧪 A paper bridge was tested three times. It held 330 g, 270 g and 210 g. What is the mean (average) load it held, in grams?
15. 15.True or false: to record every result is good testing. (a) True (b) False
16. 16.🧪 Is it good or poor testing to hide a failed test? (a) good testing (b) poor testing
17. 17.🔢 To build and test a straw bridge, what comes right after “choose and draw one”? (a) build it with straws (b) load it with coins (c) sketch three ideas (d) read the challenge rules
18. 18.🧪 Three prototype bridges were tested with the same method. Design A held 220 g, design B held 320 g and design C held 270 g. Which design was the weakest? (a) design A (b) design C (c) design B
19. 19.🧪 The first prototype held 270 g. After the team improved it, the new prototype held 420 g. How many more grams did it hold?
20. 20.🧪 The first prototype held 220 g. After the team improved it, the new prototype held 400 g. How many more grams did it hold?
21. 21.🧪 A paper bridge was tested three times. It held 180 g, 80 g and 220 g. What is the mean (average) load it held, in grams?
22. 22.🧪 Is it good or poor testing to measure the same way? (a) poor testing (b) good testing
23. 23.🧪 Three prototype bridges were tested with the same method. Design A held 360 g, design B held 310 g and design C held 260 g. Which design was the strongest? (a) design A (b) design C (c) design B
24. 24.🔍 Which is the odd one out? (a) change lots at once (b) guess, do not measure (c) test it only once (d) measure the same way
25. 25.🧪 Three prototype bridges were tested with the same method. Design A held 290 g, design B held 340 g and design C held 390 g. Which design was the weakest? (a) design B (b) design C (c) design A
26. 26.🧪 A paper bridge was tested three times. It held 220 g, 180 g and 230 g. What is the mean (average) load it held, in grams?
27. 27.True or false: to record every result is poor testing. (a) False (b) True
28. 28.🔍 Which is the odd one out? (a) change only one thing (b) test it only once (c) repeat each test (d) record every result
29. 29.True or false: to test it only once is poor testing. (a) True (b) False
30. 30.🔢 To build and test a straw bridge, which is the LAST step? (a) build it with straws (b) read the challenge rules (c) load it with coins (d) strengthen the weak part
31. 31.🧪 The first prototype held 260 g. After the team improved it, the new prototype held 390 g. How many more grams did it hold?
32. 32.🧪 A paper bridge was tested three times. It held 420 g, 300 g and 240 g. What is the mean (average) load it held, in grams?
33. 33.🧪 The first prototype held 120 g. After the team improved it, the new prototype held 220 g. How many more grams did it hold?
34. 34.🔍 Which is the odd one out? (a) measure the same way (b) change only one thing (c) use the same load (d) guess, do not measure
35. 35.🔢 To build and test a straw bridge, what comes right after “sketch three ideas”? (a) choose and draw one (b) build it with straws (c) strengthen the weak part (d) read the challenge rules
36. 36.🧪 In a fair test, how many things do you change at a time? (a) one (b) none (c) all of them (d) two
37. 37.🧪 A paper bridge was tested three times. It held 380 g, 280 g and 270 g. What is the mean (average) load it held, in grams?
38. 38.🧪 A paper bridge was tested three times. It held 420 g, 320 g and 310 g. What is the mean (average) load it held, in grams?
39. 39.🔢 To build and test a straw bridge, which comes first: “load it with coins” or “sketch three ideas”? (a) load it with coins (b) sketch three ideas
40. 40.🧪 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

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