Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 299 · 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 repeat each test? (a) good testing (b) poor testing
2. 2.🔢 To build and test a straw bridge, what comes right after “load it with coins”? (a) build it with straws (b) strengthen the weak part (c) sketch three ideas (d) read the challenge rules
3. 3.True or false: to change lots at once is good testing. (a) True (b) False
4. 4.True or false: to change only one thing is poor testing. (a) False (b) True
5. 5.🔍 Which is the odd one out? (a) hide a failed test (b) use a new load each time (c) skip writing results (d) measure the same way
6. 6.🔍 Which is the odd one out? (a) test it only once (b) skip writing results (c) use a new load each time (d) repeat each test
7. 7.🔢 To build and test a straw bridge, what comes right after “sketch three ideas”? (a) strengthen the weak part (b) load it with coins (c) choose and draw one (d) build it with straws
8. 8.🧪 The first prototype held 280 g. After the team improved it, the new prototype held 300 g. How many more grams did it hold?
9. 9.🔍 Which is the odd one out? (a) test it only once (b) change only one thing (c) record every result (d) use the same load
10. 10.🔍 Which is the odd one out? (a) change lots at once (b) test it only once (c) guess, do not measure (d) record every result
11. 11.🧪 In a fair test, how many things do you change at a time? (a) two (b) one (c) all of them (d) none
12. 12.True or false: to test it only once is good testing. (a) False (b) True
13. 13.🔢 To build and test a straw bridge, which is the LAST step? (a) sketch three ideas (b) load it with coins (c) read the challenge rules (d) strengthen the weak part
14. 14.🧪 The first prototype held 70 g. After the team improved it, the new prototype held 120 g. How many more grams did it hold?
15. 15.🔢 To build and test a straw bridge, which comes first: “load it with coins” or “choose and draw one”? (a) load it with coins (b) choose and draw one
16. 16.🔢 To build and test a straw bridge, which comes first: “build it with straws” or “sketch three ideas”? (a) sketch three ideas (b) build it with straws
17. 17.🧪 Three prototype bridges were tested with the same method. Design A held 230 g, design B held 280 g and design C held 330 g. Which design was the weakest? (a) design A (b) design B (c) design C
18. 18.🔢 To build and test a straw bridge, which is the FIRST step? (a) read the challenge rules (b) choose and draw one (c) sketch three ideas (d) load it with coins
19. 19.🧪 Is it good or poor testing to hide a failed test? (a) good testing (b) poor testing
20. 20.🔢 To build and test a straw bridge, what comes right after “choose and draw one”? (a) load it with coins (b) sketch three ideas (c) build it with straws (d) read the challenge rules
21. 21.🧪 Is it good or poor testing to use the same load? (a) good testing (b) poor testing
22. 22.🧪 A paper bridge was tested three times. It held 340 g, 210 g and 200 g. What is the mean (average) load it held, in grams?
23. 23.🧪 Three prototype bridges were tested with the same method. Design A held 230 g, design B held 180 g and design C held 130 g. Which design was the weakest? (a) design A (b) design C (c) design B
24. 24.🧪 The first prototype held 210 g. After the team improved it, the new prototype held 220 g. How many more grams did it hold?
25. 25.🧪 A paper bridge was tested three times. It held 290 g, 240 g and 280 g. What is the mean (average) load it held, in grams?
26. 26.🧪 A paper bridge was tested three times. It held 320 g, 200 g and 230 g. What is the mean (average) load it held, in grams?
27. 27.True or false: to hide a failed test is good testing. (a) False (b) True
28. 28.🧪 The first prototype held 180 g. After the team improved it, the new prototype held 270 g. How many more grams did it hold?
29. 29.🧪 Is it good or poor testing to change only one thing? (a) poor testing (b) good testing
30. 30.🧪 What is a prototype? (a) a sales poster (b) the final product (c) an early test model (d) a broken part
31. 31.🧪 The first prototype held 120 g. After the team improved it, the new prototype held 180 g. How many more grams did it hold?
32. 32.🧪 Is it good or poor testing to use a new load each time? (a) good testing (b) poor testing
33. 33.🧪 The first prototype held 80 g. After the team improved it, the new prototype held 240 g. How many more grams did it hold?
34. 34.🧪 The first prototype held 120 g. After the team improved it, the new prototype held 230 g. How many more grams did it hold?
35. 35.🧪 A paper bridge was tested three times. It held 380 g, 310 g and 240 g. What is the mean (average) load it held, in grams?
36. 36.🔢 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
37. 37.🧪 The first prototype held 180 g. After the team improved it, the new prototype held 280 g. How many more grams did it hold?
38. 38.🧪 Why do engineers make prototypes? (a) to sell them at once (b) to avoid testing (c) to decorate a room (d) to test ideas cheaply
39. 39.True or false: to guess, do not measure is good testing. (a) False (b) True
40. 40.True or false: to test it only once is poor testing. (a) False (b) True

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