Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 742 · 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.🧪 A paper bridge was tested three times. It held 230 g, 160 g and 150 g. What is the mean (average) load it held, in grams?
2. 2.True or false: to measure the same way is poor testing. (a) True (b) False
3. 3.🧪 Three prototype bridges were tested with the same method. Design A held 270 g, design B held 220 g and design C held 170 g. Which design was the weakest? (a) design B (b) design A (c) design C
4. 4.🧪 The first prototype held 140 g. After the team improved it, the new prototype held 210 g. How many more grams did it hold?
5. 5.🧪 The first prototype held 50 g. After the team improved it, the new prototype held 80 g. How many more grams did it hold?
6. 6.True or false: to use the same load is poor testing. (a) False (b) True
7. 7.🔍 Which is the odd one out? (a) record every result (b) test it only once (c) change only one thing (d) measure the same way
8. 8.True or false: to change lots at once is good testing. (a) True (b) False
9. 9.True or false: to hide a failed test is good testing. (a) True (b) False
10. 10.🧪 Is it good or poor testing to test it only once? (a) poor testing (b) good testing
11. 11.🔍 Which is the odd one out? (a) use a new load each time (b) change only one thing (c) record every result (d) measure the same way
12. 12.🧪 The first prototype held 50 g. After the team improved it, the new prototype held 60 g. How many more grams did it hold?
13. 13.True or false: to use the same load is good testing. (a) True (b) False
14. 14.🔢 To build and test a straw bridge, what comes right after “build it with straws”? (a) strengthen the weak part (b) choose and draw one (c) load it with coins (d) read the challenge rules
15. 15.🧪 Is it good or poor testing to hide a failed test? (a) good testing (b) poor testing
16. 16.🔢 To build and test a straw bridge, which comes first: “load it with coins” or “strengthen the weak part”? (a) load it with coins (b) strengthen the weak part
17. 17.🧪 Three prototype bridges were tested with the same method. Design A held 300 g, design B held 250 g and design C held 350 g. Which design was the weakest? (a) design A (b) design B (c) design C
18. 18.🧪 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
19. 19.🧪 Is it good or poor testing to use a new load each time? (a) good testing (b) poor testing
20. 20.🧪 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
21. 21.🧪 What is a prototype? (a) a broken part (b) an early test model (c) a sales poster (d) the final product
22. 22.🧪 A paper bridge was tested three times. It held 250 g, 130 g and 100 g. What is the mean (average) load it held, in grams?
23. 23.🧪 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 weakest? (a) design A (b) design C (c) design B
24. 24.🧪 The first prototype held 190 g. After the team improved it, the new prototype held 370 g. How many more grams did it hold?
25. 25.True or false: to use a new load each time is good testing. (a) False (b) True
26. 26.True or false: to guess, do not measure is good testing. (a) True (b) False
27. 27.🔍 Which is the odd one out? (a) use the same load (b) repeat each test (c) change lots at once (d) change only one thing
28. 28.🔍 Which is the odd one out? (a) use a new load each time (b) guess, do not measure (c) skip writing results (d) use the same load
29. 29.🔍 Which is the odd one out? (a) skip writing results (b) guess, do not measure (c) record every result (d) use a new load each time
30. 30.True or false: to record every result is poor testing. (a) False (b) True
31. 31.🧪 Is it good or poor testing to use the same load? (a) good testing (b) poor testing
32. 32.🔢 To build and test a straw bridge, what comes right after “read the challenge rules”? (a) sketch three ideas (b) build it with straws (c) load it with coins (d) choose and draw one
33. 33.True or false: to repeat each test is good testing. (a) True (b) False
34. 34.🧪 Three prototype bridges were tested with the same method. Design A held 290 g, design B held 240 g and design C held 190 g. Which design was the weakest? (a) design C (b) design A (c) design B
35. 35.🔢 To build and test a straw bridge, which is the LAST step? (a) build it with straws (b) strengthen the weak part (c) sketch three ideas (d) choose and draw one
36. 36.🧪 A paper bridge was tested three times. It held 190 g, 130 g and 220 g. What is the mean (average) load it held, in grams?
37. 37.🧪 The first prototype held 170 g. After the team improved it, the new prototype held 180 g. How many more grams did it hold?
38. 38.🧪 Three prototype bridges were tested with the same method. Design A held 180 g, design B held 230 g and design C held 280 g. Which design was the strongest? (a) design C (b) design A (c) design B
39. 39.🧪 A paper bridge was tested three times. It held 360 g, 250 g and 380 g. What is the mean (average) load it held, in grams?
40. 40.True or false: to repeat each test is poor testing. (a) True (b) False

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