Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 328 · 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.🧪 In a fair test, how many things do you change at a time? (a) none (b) two (c) one (d) all of them
2. 2.🧪 Is it good or poor testing to measure the same way? (a) good testing (b) poor testing
3. 3.🔢 To build and test a straw bridge, which comes first: “strengthen the weak part” or “build it with straws”? (a) build it with straws (b) strengthen the weak part
4. 4.True or false: to measure the same way is good testing. (a) False (b) True
5. 5.🧪 Three prototype bridges were tested with the same method. Design A held 240 g, design B held 340 g and design C held 290 g. Which design was the weakest? (a) design A (b) design B (c) design C
6. 6.True or false: to repeat each test is poor testing. (a) True (b) False
7. 7.🧪 The first prototype held 300 g. After the team improved it, the new prototype held 330 g. How many more grams did it hold?
8. 8.🔢 To build and test a straw bridge, which is the LAST step? (a) strengthen the weak part (b) load it with coins (c) read the challenge rules (d) build it with straws
9. 9.🧪 A paper bridge was tested three times. It held 300 g, 190 g and 290 g. What is the mean (average) load it held, in grams?
10. 10.🧪 A paper bridge was tested three times. It held 280 g, 170 g and 300 g. What is the mean (average) load it held, in grams?
11. 11.🧪 The first prototype held 50 g. After the team improved it, the new prototype held 60 g. How many more grams did it hold?
12. 12.🔢 To build and test a straw bridge, what comes right after “load it with coins”? (a) choose and draw one (b) strengthen the weak part (c) read the challenge rules (d) build it with straws
13. 13.🧪 What is a prototype? (a) the final product (b) a broken part (c) an early test model (d) a sales poster
14. 14.🧪 The first prototype held 60 g. After the team improved it, the new prototype held 190 g. How many more grams did it hold?
15. 15.🧪 The first prototype held 120 g. After the team improved it, the new prototype held 200 g. How many more grams did it hold?
16. 16.🧪 A paper bridge was tested three times. It held 330 g, 230 g and 130 g. What is the mean (average) load it held, in grams?
17. 17.🔢 To build and test a straw bridge, which comes first: “choose and draw one” or “strengthen the weak part”? (a) choose and draw one (b) strengthen the weak part
18. 18.🔢 To build and test a straw bridge, which comes first: “strengthen the weak part” or “read the challenge rules”? (a) strengthen the weak part (b) read the challenge rules
19. 19.🔍 Which is the odd one out? (a) use a new load each time (b) guess, do not measure (c) measure the same way (d) change lots at once
20. 20.True or false: to measure the same way is poor testing. (a) False (b) True
21. 21.🔢 To build and test a straw bridge, which comes first: “load it with coins” or “strengthen the weak part”? (a) strengthen the weak part (b) load it with coins
22. 22.True or false: to change lots at once is poor testing. (a) True (b) False
23. 23.🧪 Why do engineers make prototypes? (a) to avoid testing (b) to sell them at once (c) to decorate a room (d) to test ideas cheaply
24. 24.True or false: to skip writing results is good testing. (a) True (b) False
25. 25.🔍 Which is the odd one out? (a) record every result (b) guess, do not measure (c) use the same load (d) repeat each test
26. 26.🔢 To build and test a straw bridge, what comes right after “read the challenge rules”? (a) choose and draw one (b) build it with straws (c) load it with coins (d) sketch three ideas
27. 27.True or false: to test it only once is good testing. (a) False (b) True
28. 28.🧪 Is it good or poor testing to use the same load? (a) good testing (b) poor testing
29. 29.🧪 Is it good or poor testing to repeat each test? (a) good testing (b) poor testing
30. 30.🧪 Is it good or poor testing to change lots at once? (a) poor testing (b) good testing
31. 31.🧪 The first prototype held 160 g. After the team improved it, the new prototype held 220 g. How many more grams did it hold?
32. 32.🔢 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
33. 33.🔢 To build and test a straw bridge, which comes first: “sketch three ideas” or “build it with straws”? (a) sketch three ideas (b) build it with straws
34. 34.🔢 To build and test a straw bridge, which is the FIRST step? (a) sketch three ideas (b) build it with straws (c) read the challenge rules (d) choose and draw one
35. 35.True or false: to test it only once is poor testing. (a) False (b) True
36. 36.🧪 A paper bridge was tested three times. It held 360 g, 220 g and 200 g. What is the mean (average) load it held, in grams?
37. 37.🧪 Is it good or poor testing to hide a failed test? (a) good testing (b) poor testing
38. 38.🧪 A paper bridge was tested three times. It held 180 g, 120 g and 210 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) strengthen the weak part (b) choose and draw one (c) read the challenge rules (d) build it with straws
40. 40.🧪 A paper bridge was tested three times. It held 290 g, 220 g and 330 g. What is the mean (average) load it held, in grams?

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