Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 113 · 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.🧪 Three prototype bridges were tested with the same method. Design A held 310 g, design B held 360 g and design C held 260 g. Which design was the strongest? (a) design A (b) design B (c) design C
2. 2.🧪 Three prototype bridges were tested with the same method. Design A held 360 g, design B held 260 g and design C held 310 g. Which design was the strongest? (a) design A (b) design B (c) design C
3. 3.🔢 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
4. 4.🔍 Which is the odd one out? (a) repeat each test (b) record every result (c) use the same load (d) hide a failed test
5. 5.True or false: to use a new load each time is good testing. (a) False (b) True
6. 6.🧪 A paper bridge was tested three times. It held 450 g, 270 g and 330 g. What is the mean (average) load it held, in grams?
7. 7.🔍 Which is the odd one out? (a) guess, do not measure (b) change lots at once (c) hide a failed test (d) record every result
8. 8.🧪 Three prototype bridges were tested with the same method. Design A held 210 g, design B held 160 g and design C held 260 g. Which design was the weakest? (a) design C (b) design A (c) design B
9. 9.🔢 To build and test a straw bridge, which comes first: “build it with straws” or “sketch three ideas”? (a) build it with straws (b) sketch three ideas
10. 10.🧪 What is a prototype? (a) a broken part (b) an early test model (c) the final product (d) a sales poster
11. 11.🧪 Is it good or poor testing to skip writing results? (a) good testing (b) poor testing
12. 12.🔢 To build and test a straw bridge, which comes first: “choose and draw one” or “build it with straws”? (a) choose and draw one (b) build it with straws
13. 13.🧪 The first prototype held 60 g. After the team improved it, the new prototype held 240 g. How many more grams did it hold?
14. 14.🧪 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
15. 15.🧪 Three prototype bridges were tested with the same method. Design A held 270 g, design B held 170 g and design C held 220 g. Which design was the strongest? (a) design B (b) design A (c) design C
16. 16.🧪 The first prototype held 290 g. After the team improved it, the new prototype held 450 g. How many more grams did it hold?
17. 17.🔢 To build and test a straw bridge, which comes first: “strengthen the weak part” or “read the challenge rules”? (a) read the challenge rules (b) strengthen the weak part
18. 18.🧪 A paper bridge was tested three times. It held 230 g, 140 g and 200 g. What is the mean (average) load it held, in grams?
19. 19.🧪 A paper bridge was tested three times. It held 310 g, 260 g and 240 g. What is the mean (average) load it held, in grams?
20. 20.🧪 Is it good or poor testing to measure the same way? (a) poor testing (b) good testing
21. 21.🧪 Three prototype bridges were tested with the same method. Design A held 220 g, design B held 170 g and design C held 270 g. Which design was the weakest? (a) design B (b) design A (c) design C
22. 22.🔢 To build and test a straw bridge, which is the LAST step? (a) build it with straws (b) read the challenge rules (c) load it with coins (d) strengthen the weak part
23. 23.🧪 A paper bridge was tested three times. It held 320 g, 180 g and 220 g. What is the mean (average) load it held, in grams?
24. 24.True or false: to repeat each test is poor testing. (a) True (b) False
25. 25.True or false: to test it only once is good testing. (a) True (b) False
26. 26.🧪 Is it good or poor testing to change lots at once? (a) good testing (b) poor testing
27. 27.🧪 Is it good or poor testing to guess, do not measure? (a) good testing (b) poor testing
28. 28.🧪 In a fair test, how many things do you change at a time? (a) two (b) all of them (c) one (d) none
29. 29.🧪 A paper bridge was tested three times. It held 340 g, 190 g and 310 g. What is the mean (average) load it held, in grams?
30. 30.🔍 Which is the odd one out? (a) change lots at once (b) test it only once (c) measure the same way (d) guess, do not measure
31. 31.🧪 The first prototype held 80 g. After the team improved it, the new prototype held 140 g. How many more grams did it hold?
32. 32.🔍 Which is the odd one out? (a) guess, do not measure (b) repeat each test (c) test it only once (d) change lots at once
33. 33.🧪 A paper bridge was tested three times. It held 190 g, 80 g and 240 g. What is the mean (average) load it held, in grams?
34. 34.🧪 Is it good or poor testing to hide a failed test? (a) good testing (b) poor testing
35. 35.🧪 Three prototype bridges were tested with the same method. Design A held 390 g, design B held 340 g and design C held 290 g. Which design was the weakest? (a) design C (b) design A (c) design B
36. 36.🧪 The first prototype held 240 g. After the team improved it, the new prototype held 330 g. How many more grams did it hold?
37. 37.True or false: to measure the same way is poor testing. (a) True (b) False
38. 38.🔢 To build and test a straw bridge, which is the FIRST step? (a) choose and draw one (b) build it with straws (c) read the challenge rules (d) load it with coins
39. 39.🧪 Why do engineers make prototypes? (a) to avoid testing (b) to test ideas cheaply (c) to decorate a room (d) to sell them at once
40. 40.🔢 To build and test a straw bridge, which comes first: “strengthen the weak part” or “build it with straws”? (a) strengthen the weak part (b) build it with straws

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