Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 460 · 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 250 g. After the team improved it, the new prototype held 380 g. How many more grams did it hold?
2. 2.🔢 To build and test a straw bridge, which is the LAST step? (a) sketch three ideas (b) strengthen the weak part (c) load it with coins (d) choose and draw one
3. 3.🧪 Three prototype bridges were tested with the same method. Design A held 300 g, design B held 350 g and design C held 400 g. Which design was the weakest? (a) design A (b) design C (c) design B
4. 4.🔢 To build and test a straw bridge, which comes first: “build it with straws” or “read the challenge rules”? (a) build it with straws (b) read the challenge rules
5. 5.🧪 Is it good or poor testing to repeat each test? (a) poor testing (b) good testing
6. 6.🧪 Is it good or poor testing to use a new load each time? (a) poor testing (b) good testing
7. 7.True or false: to guess, do not measure is poor testing. (a) True (b) False
8. 8.True or false: to measure the same way is good testing. (a) False (b) True
9. 9.🔍 Which is the odd one out? (a) use the same load (b) change only one thing (c) change lots at once (d) record every result
10. 10.🧪 Three prototype bridges were tested with the same method. Design A held 160 g, design B held 260 g and design C held 210 g. Which design was the weakest? (a) design C (b) design B (c) design A
11. 11.🔍 Which is the odd one out? (a) repeat each test (b) test it only once (c) guess, do not measure (d) change lots at once
12. 12.🧪 A paper bridge was tested three times. It held 370 g, 330 g and 350 g. What is the mean (average) load it held, in grams?
13. 13.🧪 Is it good or poor testing to change lots at once? (a) good testing (b) poor testing
14. 14.🧪 The first prototype held 200 g. After the team improved it, the new prototype held 380 g. How many more grams did it hold?
15. 15.🧪 Is it good or poor testing to test it only once? (a) good testing (b) poor testing
16. 16.🧪 Three prototype bridges were tested with the same method. Design A held 250 g, design B held 300 g and design C held 200 g. Which design was the strongest? (a) design A (b) design B (c) design C
17. 17.🔍 Which is the odd one out? (a) use the same load (b) measure the same way (c) hide a failed test (d) change only one thing
18. 18.🧪 In a fair test, how many things do you change at a time? (a) none (b) all of them (c) one (d) two
19. 19.🧪 A paper bridge was tested three times. It held 220 g, 140 g and 120 g. What is the mean (average) load it held, in grams?
20. 20.🧪 The first prototype held 80 g. After the team improved it, the new prototype held 90 g. How many more grams did it hold?
21. 21.🧪 Is it good or poor testing to skip writing results? (a) good testing (b) poor testing
22. 22.True or false: to change lots at once is poor testing. (a) False (b) True
23. 23.🧪 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 B (b) design A (c) design C
24. 24.True or false: to guess, do not measure is good testing. (a) False (b) True
25. 25.🧪 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 strongest? (a) design C (b) design B (c) design A
26. 26.🧪 A paper bridge was tested three times. It held 300 g, 140 g and 250 g. What is the mean (average) load it held, in grams?
27. 27.🧪 The first prototype held 60 g. After the team improved it, the new prototype held 230 g. How many more grams did it hold?
28. 28.🧪 Three prototype bridges were tested with the same method. Design A held 130 g, design B held 230 g and design C held 180 g. Which design was the strongest? (a) design C (b) design B (c) design A
29. 29.🔢 To build and test a straw bridge, which comes first: “strengthen the weak part” or “choose and draw one”? (a) choose and draw one (b) strengthen the weak part
30. 30.🧪 Is it good or poor testing to change only one thing? (a) good testing (b) poor testing
31. 31.🧪 A paper bridge was tested three times. It held 390 g, 270 g and 210 g. What is the mean (average) load it held, in grams?
32. 32.🧪 A paper bridge was tested three times. It held 210 g, 150 g and 120 g. What is the mean (average) load it held, in grams?
33. 33.🧪 Why repeat a test three times? (a) to get reliable results (b) the first is wrong (c) to use more paper (d) it looks busy
34. 34.🔢 To build and test a straw bridge, which comes first: “read the challenge rules” or “sketch three ideas”? (a) read the challenge rules (b) sketch three ideas
35. 35.🧪 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?
36. 36.🔢 To build and test a straw bridge, which is the FIRST step? (a) build it with straws (b) read the challenge rules (c) strengthen the weak part (d) sketch three ideas
37. 37.🧪 A paper bridge was tested three times. It held 300 g, 170 g and 340 g. What is the mean (average) load it held, in grams?
38. 38.🔍 Which is the odd one out? (a) change only one thing (b) measure the same way (c) record every result (d) skip writing results
39. 39.🧪 A paper bridge was tested three times. It held 410 g, 270 g and 340 g. What is the mean (average) load it held, in grams?
40. 40.🧪 Why do engineers make prototypes? (a) to decorate a room (b) to sell them at once (c) to test ideas cheaply (d) to avoid testing

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