Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 518 · 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 hide a failed test? (a) poor testing (b) good testing
2. 2.🧪 Why do engineers make prototypes? (a) to test ideas cheaply (b) to avoid testing (c) to sell them at once (d) to decorate a room
3. 3.🧪 Is it good or poor testing to test it only once? (a) good testing (b) poor testing
4. 4.🧪 Is it good or poor testing to use a new load each time? (a) poor testing (b) good testing
5. 5.🧪 Three prototype bridges were tested with the same method. Design A held 120 g, design B held 220 g and design C held 170 g. Which design was the weakest? (a) design C (b) design A (c) design B
6. 6.🧪 A paper bridge was tested three times. It held 340 g, 240 g and 440 g. What is the mean (average) load it held, in grams?
7. 7.🧪 A paper bridge was tested three times. It held 320 g, 300 g and 310 g. What is the mean (average) load it held, in grams?
8. 8.🧪 A paper bridge was tested three times. It held 380 g, 210 g and 340 g. What is the mean (average) load it held, in grams?
9. 9.🧪 Why repeat a test three times? (a) it looks busy (b) to get reliable results (c) to use more paper (d) the first is wrong
10. 10.🔍 Which is the odd one out? (a) record every result (b) measure the same way (c) change only one thing (d) change lots at once
11. 11.🧪 The first prototype held 70 g. After the team improved it, the new prototype held 80 g. How many more grams did it hold?
12. 12.🔢 To build and test a straw bridge, which is the FIRST step? (a) strengthen the weak part (b) build it with straws (c) read the challenge rules (d) choose and draw one
13. 13.🧪 Is it good or poor testing to change lots at once? (a) poor testing (b) good testing
14. 14.🔢 To build and test a straw bridge, what comes right after “load it with coins”? (a) read the challenge rules (b) sketch three ideas (c) build it with straws (d) strengthen the weak part
15. 15.🧪 In a fair test, how many things do you change at a time? (a) two (b) all of them (c) none (d) one
16. 16.True or false: to use the same load is poor testing. (a) False (b) True
17. 17.🔍 Which is the odd one out? (a) hide a failed test (b) record every result (c) test it only once (d) change lots at once
18. 18.🧪 Three prototype bridges were tested with the same method. Design A held 370 g, design B held 320 g and design C held 270 g. Which design was the strongest? (a) design C (b) design B (c) design A
19. 19.🧪 The first prototype held 70 g. After the team improved it, the new prototype held 150 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 420 g. How many more grams did it hold?
21. 21.True or false: to record every result is good testing. (a) True (b) False
22. 22.🧪 The first prototype held 100 g. After the team improved it, the new prototype held 110 g. How many more grams did it hold?
23. 23.🧪 A paper bridge was tested three times. It held 360 g, 210 g and 270 g. What is the mean (average) load it held, in grams?
24. 24.True or false: to measure the same way is poor testing. (a) False (b) True
25. 25.🧪 The first prototype held 210 g. After the team improved it, the new prototype held 230 g. How many more grams did it hold?
26. 26.🧪 Three prototype bridges were tested with the same method. Design A held 270 g, design B held 320 g and design C held 220 g. Which design was the weakest? (a) design C (b) design A (c) design B
27. 27.🧪 The first prototype held 120 g. After the team improved it, the new prototype held 290 g. How many more grams did it hold?
28. 28.🔍 Which is the odd one out? (a) record every result (b) use the same load (c) hide a failed test (d) repeat each test
29. 29.🔢 To build and test a straw bridge, which is the LAST step? (a) choose and draw one (b) sketch three ideas (c) build it with straws (d) strengthen the weak part
30. 30.🧪 The first prototype held 240 g. After the team improved it, the new prototype held 350 g. How many more grams did it hold?
31. 31.🔍 Which is the odd one out? (a) record every result (b) measure the same way (c) use the same load (d) test it only once
32. 32.🧪 What is a prototype? (a) a sales poster (b) the final product (c) an early test model (d) a broken part
33. 33.🔢 To build and test a straw bridge, which comes first: “build it with straws” or “read the challenge rules”? (a) build it with straws (b) read the challenge rules
34. 34.🔍 Which is the odd one out? (a) guess, do not measure (b) test it only once (c) use a new load each time (d) change only one thing
35. 35.🔢 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
36. 36.True or false: to hide a failed test is poor testing. (a) True (b) False
37. 37.🧪 A paper bridge was tested three times. It held 200 g, 170 g and 200 g. What is the mean (average) load it held, in grams?
38. 38.🧪 Is it good or poor testing to record every result? (a) good testing (b) poor testing
39. 39.🔍 Which is the odd one out? (a) use a new load each time (b) hide a failed test (c) change lots at once (d) use the same load
40. 40.🔍 Which is the odd one out? (a) use a new load each time (b) hide a failed test (c) repeat each test (d) skip writing results

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