Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 265 · 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.🧪 The first prototype held 140 g. After the team improved it, the new prototype held 330 g. How many more grams did it hold?
2. 2.🧪 In a fair test, how many things do you change at a time? (a) all of them (b) none (c) one (d) two
3. 3.True or false: to use a new load each time is good testing. (a) False (b) True
4. 4.🧪 The first prototype held 300 g. After the team improved it, the new prototype held 340 g. How many more grams did it hold?
5. 5.True or false: to test it only once is good testing. (a) False (b) True
6. 6.🔢 To build and test a straw bridge, which comes first: “build it with straws” or “strengthen the weak part”? (a) strengthen the weak part (b) build it with straws
7. 7.🧪 What is a prototype? (a) a broken part (b) a sales poster (c) the final product (d) an early test model
8. 8.🔢 To build and test a straw bridge, which comes first: “sketch three ideas” or “load it with coins”? (a) load it with coins (b) sketch three ideas
9. 9.🔢 To build and test a straw bridge, which is the FIRST step? (a) sketch three ideas (b) load it with coins (c) build it with straws (d) read the challenge rules
10. 10.🧪 Three prototype bridges were tested with the same method. Design A held 340 g, design B held 290 g and design C held 390 g. Which design was the weakest? (a) design A (b) design C (c) design B
11. 11.🧪 Is it good or poor testing to record every result? (a) good testing (b) poor testing
12. 12.True or false: to measure the same way is good testing. (a) True (b) False
13. 13.🔍 Which is the odd one out? (a) guess, do not measure (b) repeat each test (c) change lots at once (d) skip writing results
14. 14.True or false: to test it only once is poor testing. (a) True (b) False
15. 15.True or false: to change only one thing is good testing. (a) True (b) False
16. 16.🧪 A paper bridge was tested three times. It held 410 g, 260 g and 260 g. What is the mean (average) load it held, in grams?
17. 17.🧪 Is it good or poor testing to use a new load each time? (a) good testing (b) poor testing
18. 18.🔍 Which is the odd one out? (a) change only one thing (b) measure the same way (c) test it only once (d) repeat each test
19. 19.True or false: to repeat each test is poor testing. (a) False (b) True
20. 20.🧪 Is it good or poor testing to use the same load? (a) poor testing (b) good testing
21. 21.🧪 Why do engineers make prototypes? (a) to avoid testing (b) to test ideas cheaply (c) to sell them at once (d) to decorate a room
22. 22.🧪 Is it good or poor testing to measure the same way? (a) poor testing (b) good testing
23. 23.🧪 Is it good or poor testing to change lots at once? (a) poor testing (b) good testing
24. 24.🧪 Three prototype bridges were tested with the same method. Design A held 260 g, design B held 360 g and design C held 310 g. Which design was the weakest? (a) design A (b) design C (c) design B
25. 25.True or false: to skip writing results is good testing. (a) False (b) True
26. 26.🧪 A paper bridge was tested three times. It held 190 g, 160 g and 160 g. What is the mean (average) load it held, in grams?
27. 27.🧪 Is it good or poor testing to hide a failed test? (a) poor testing (b) good testing
28. 28.🧪 Three prototype bridges were tested with the same method. Design A held 100 g, design B held 200 g and design C held 150 g. Which design was the strongest? (a) design C (b) design B (c) design A
29. 29.🧪 The first prototype held 170 g. After the team improved it, the new prototype held 270 g. How many more grams did it hold?
30. 30.🧪 A paper bridge was tested three times. It held 330 g, 210 g and 240 g. What is the mean (average) load it held, in grams?
31. 31.🧪 The first prototype held 290 g. After the team improved it, the new prototype held 380 g. How many more grams did it hold?
32. 32.🔍 Which is the odd one out? (a) test it only once (b) hide a failed test (c) use a new load each time (d) use the same load
33. 33.🧪 Is it good or poor testing to repeat each test? (a) good testing (b) poor testing
34. 34.🧪 A paper bridge was tested three times. It held 310 g, 270 g and 290 g. What is the mean (average) load it held, in grams?
35. 35.🧪 Three prototype bridges were tested with the same method. Design A held 170 g, design B held 220 g and design C held 120 g. Which design was the strongest? (a) design A (b) design C (c) design B
36. 36.🧪 A paper bridge was tested three times. It held 230 g, 180 g and 130 g. What is the mean (average) load it held, in grams?
37. 37.🧪 Is it good or poor testing to change only one thing? (a) good testing (b) poor testing
38. 38.🔍 Which is the odd one out? (a) change only one thing (b) test it only once (c) hide a failed test (d) skip writing results
39. 39.🧪 A paper bridge was tested three times. It held 390 g, 230 g and 250 g. What is the mean (average) load it held, in grams?
40. 40.🧪 A paper bridge was tested three times. It held 270 g, 230 g and 310 g. What is the mean (average) load it held, in grams?

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