Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 997 · 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 change only one thing? (a) good testing (b) poor testing
2. 2.🧪 Is it good or poor testing to skip writing results? (a) poor testing (b) good testing
3. 3.🧪 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 A (b) design B (c) design C
4. 4.🔍 Which is the odd one out? (a) repeat each test (b) use the same load (c) use a new load each time (d) measure the same way
5. 5.🧪 The first prototype held 100 g. After the team improved it, the new prototype held 140 g. How many more grams did it hold?
6. 6.🧪 Why do engineers make prototypes? (a) to decorate a room (b) to avoid testing (c) to sell them at once (d) to test ideas cheaply
7. 7.🧪 Why repeat a test three times? (a) it looks busy (b) the first is wrong (c) to use more paper (d) to get reliable results
8. 8.🧪 Three prototype bridges were tested with the same method. Design A held 320 g, design B held 220 g and design C held 270 g. Which design was the weakest? (a) design A (b) design C (c) design B
9. 9.🧪 A paper bridge was tested three times. It held 420 g, 220 g and 320 g. What is the mean (average) load it held, in grams?
10. 10.🧪 Is it good or poor testing to hide a failed test? (a) good testing (b) poor testing
11. 11.🧪 A paper bridge was tested three times. It held 260 g, 130 g and 240 g. What is the mean (average) load it held, in grams?
12. 12.🔍 Which is the odd one out? (a) change lots at once (b) repeat each test (c) hide a failed test (d) guess, do not measure
13. 13.🔍 Which is the odd one out? (a) test it only once (b) change only one thing (c) repeat each test (d) measure the same way
14. 14.🧪 The first prototype held 110 g. After the team improved it, the new prototype held 120 g. How many more grams did it hold?
15. 15.🧪 Three prototype bridges were tested with the same method. Design A held 300 g, design B held 350 g and design C held 400 g. Which design was the weakest? (a) design C (b) design A (c) design B
16. 16.🔍 Which is the odd one out? (a) measure the same way (b) test it only once (c) change lots at once (d) guess, do not measure
17. 17.🔍 Which is the odd one out? (a) change only one thing (b) guess, do not measure (c) test it only once (d) hide a failed test
18. 18.🧪 What is a prototype? (a) a sales poster (b) a broken part (c) an early test model (d) the final product
19. 19.True or false: to measure the same way is poor testing. (a) True (b) False
20. 20.🔢 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
21. 21.🔢 To build and test a straw bridge, what comes right after “read the challenge rules”? (a) load it with coins (b) strengthen the weak part (c) sketch three ideas (d) build it with straws
22. 22.True or false: to use the same load is poor testing. (a) False (b) True
23. 23.🧪 Is it good or poor testing to guess, do not measure? (a) poor testing (b) good testing
24. 24.True or false: to change only one thing is good testing. (a) False (b) True
25. 25.🧪 The first prototype held 260 g. After the team improved it, the new prototype held 280 g. How many more grams did it hold?
26. 26.🔍 Which is the odd one out? (a) change only one thing (b) change lots at once (c) record every result (d) measure the same way
27. 27.🔢 To build and test a straw bridge, what comes right after “load it with coins”? (a) choose and draw one (b) build it with straws (c) strengthen the weak part (d) read the challenge rules
28. 28.🔢 To build and test a straw bridge, what comes right after “choose and draw one”? (a) load it with coins (b) read the challenge rules (c) sketch three ideas (d) build it with straws
29. 29.True or false: to use a new load each time is good testing. (a) True (b) False
30. 30.True or false: to repeat each test is poor testing. (a) False (b) True
31. 31.🧪 A paper bridge was tested three times. It held 250 g, 140 g and 330 g. What is the mean (average) load it held, in grams?
32. 32.🔢 To build and test a straw bridge, what comes right after “build it with straws”? (a) sketch three ideas (b) strengthen the weak part (c) load it with coins (d) choose and draw one
33. 33.🔍 Which is the odd one out? (a) measure the same way (b) change only one thing (c) hide a failed test (d) use the same load
34. 34.🔢 To build and test a straw bridge, which is the FIRST step? (a) sketch three ideas (b) strengthen the weak part (c) build it with straws (d) read the challenge rules
35. 35.True or false: to skip writing results is good testing. (a) False (b) True
36. 36.🧪 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 strongest? (a) design A (b) design C (c) design B
37. 37.True or false: to guess, do not measure is good testing. (a) True (b) False
38. 38.🧪 A paper bridge was tested three times. It held 260 g, 170 g and 170 g. What is the mean (average) load it held, in grams?
39. 39.🔢 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) load it with coins (d) strengthen the weak part
40. 40.🔢 To build and test a straw bridge, which comes first: “strengthen the weak part” or “build it with straws”? (a) strengthen the weak part (b) build it with straws

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