Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 674 · 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.🧪 Why repeat a test three times? (a) the first is wrong (b) it looks busy (c) to use more paper (d) to get reliable results
2. 2.🧪 Is it good or poor testing to hide a failed test? (a) good testing (b) poor testing
3. 3.🔢 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
4. 4.🧪 The first prototype held 190 g. After the team improved it, the new prototype held 300 g. How many more grams did it hold?
5. 5.🔢 To build and test a straw bridge, what comes right after “load it with coins”? (a) build it with straws (b) sketch three ideas (c) strengthen the weak part (d) read the challenge rules
6. 6.🧪 A paper bridge was tested three times. It held 280 g, 100 g and 190 g. What is the mean (average) load it held, in grams?
7. 7.🧪 The first prototype held 190 g. After the team improved it, the new prototype held 200 g. How many more grams did it hold?
8. 8.🔍 Which is the odd one out? (a) record every result (b) use a new load each time (c) change only one thing (d) repeat each test
9. 9.🔢 To build and test a straw bridge, which is the LAST step? (a) strengthen the weak part (b) build it with straws (c) sketch three ideas (d) read the challenge rules
10. 10.🧪 Is it good or poor testing to change lots at once? (a) poor testing (b) good testing
11. 11.🔢 To build and test a straw bridge, what comes right after “build it with straws”? (a) strengthen the weak part (b) load it with coins (c) sketch three ideas (d) read the challenge rules
12. 12.🔢 To build and test a straw bridge, which comes first: “read the challenge rules” or “build it with straws”? (a) build it with straws (b) read the challenge rules
13. 13.🧪 Three prototype bridges were tested with the same method. Design A held 270 g, design B held 220 g and design C held 320 g. Which design was the weakest? (a) design A (b) design C (c) design B
14. 14.🧪 A paper bridge was tested three times. It held 170 g, 90 g and 250 g. What is the mean (average) load it held, in grams?
15. 15.🧪 What is a prototype? (a) a broken part (b) an early test model (c) the final product (d) a sales poster
16. 16.🧪 Why do engineers make prototypes? (a) to avoid testing (b) to decorate a room (c) to sell them at once (d) to test ideas cheaply
17. 17.🔢 To build and test a straw bridge, which comes first: “sketch three ideas” or “read the challenge rules”? (a) read the challenge rules (b) sketch three ideas
18. 18.🔢 To build and test a straw bridge, which comes first: “choose and draw one” or “sketch three ideas”? (a) choose and draw one (b) sketch three ideas
19. 19.True or false: to test it only once is good testing. (a) False (b) True
20. 20.True or false: to skip writing results is poor testing. (a) False (b) True
21. 21.True or false: to measure the same way is poor testing. (a) True (b) False
22. 22.🧪 A paper bridge was tested three times. It held 350 g, 290 g and 410 g. What is the mean (average) load it held, in grams?
23. 23.🧪 A paper bridge was tested three times. It held 280 g, 120 g and 260 g. What is the mean (average) load it held, in grams?
24. 24.🔢 To build and test a straw bridge, what comes right after “choose and draw one”? (a) strengthen the weak part (b) read the challenge rules (c) sketch three ideas (d) build it with straws
25. 25.🧪 In a fair test, how many things do you change at a time? (a) none (b) all of them (c) two (d) one
26. 26.🧪 Three prototype bridges were tested with the same method. Design A held 230 g, design B held 130 g and design C held 180 g. Which design was the strongest? (a) design A (b) design B (c) design C
27. 27.🧪 Three prototype bridges were tested with the same method. Design A held 380 g, design B held 330 g and design C held 280 g. Which design was the weakest? (a) design B (b) design C (c) design A
28. 28.🔍 Which is the odd one out? (a) change lots at once (b) guess, do not measure (c) hide a failed test (d) repeat each test
29. 29.🧪 Is it good or poor testing to record every result? (a) good testing (b) poor testing
30. 30.🧪 The first prototype held 60 g. After the team improved it, the new prototype held 240 g. How many more grams did it hold?
31. 31.🧪 The first prototype held 50 g. After the team improved it, the new prototype held 60 g. How many more grams did it hold?
32. 32.🧪 The first prototype held 290 g. After the team improved it, the new prototype held 470 g. How many more grams did it hold?
33. 33.🧪 Is it good or poor testing to change only one thing? (a) good testing (b) poor testing
34. 34.🔢 To build and test a straw bridge, which comes first: “read the challenge rules” or “sketch three ideas”? (a) sketch three ideas (b) read the challenge rules
35. 35.🧪 Three prototype bridges were tested with the same method. Design A held 150 g, design B held 200 g and design C held 100 g. Which design was the weakest? (a) design C (b) design B (c) design A
36. 36.🧪 A paper bridge was tested three times. It held 290 g, 110 g and 200 g. What is the mean (average) load it held, in grams?
37. 37.True or false: to change lots at once is good testing. (a) True (b) False
38. 38.🧪 Is it good or poor testing to skip writing results? (a) good testing (b) poor testing
39. 39.🧪 The first prototype held 180 g. After the team improved it, the new prototype held 360 g. How many more grams did it hold?
40. 40.🔢 To build and test a straw bridge, which comes first: “sketch three ideas” or “choose and draw one”? (a) choose and draw one (b) sketch three ideas

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