Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 837 · 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.🧪 What is a prototype? (a) the final product (b) an early test model (c) a sales poster (d) a broken part
2. 2.🧪 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 strongest? (a) design B (b) design A (c) design C
3. 3.True or false: to use the same load is poor testing. (a) True (b) False
4. 4.🧪 The first prototype held 90 g. After the team improved it, the new prototype held 100 g. How many more grams did it hold?
5. 5.🧪 The first prototype held 150 g. After the team improved it, the new prototype held 270 g. How many more grams did it hold?
6. 6.🧪 Why repeat a test three times? (a) to use more paper (b) it looks busy (c) to get reliable results (d) the first is wrong
7. 7.🧪 Is it good or poor testing to use the same load? (a) good testing (b) poor testing
8. 8.🧪 Is it good or poor testing to skip writing results? (a) poor testing (b) good testing
9. 9.🧪 Is it good or poor testing to measure the same way? (a) poor testing (b) good testing
10. 10.🧪 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
11. 11.🔢 To build and test a straw bridge, which is the LAST step? (a) sketch three ideas (b) strengthen the weak part (c) build it with straws (d) choose and draw one
12. 12.🧪 A paper bridge was tested three times. It held 260 g, 230 g and 200 g. What is the mean (average) load it held, in grams?
13. 13.🧪 A paper bridge was tested three times. It held 390 g, 220 g and 290 g. What is the mean (average) load it held, in grams?
14. 14.🧪 Is it good or poor testing to record every result? (a) poor testing (b) good testing
15. 15.True or false: to record every result is poor testing. (a) True (b) False
16. 16.🧪 Three prototype bridges were tested with the same method. Design A held 120 g, design B held 170 g and design C held 220 g. Which design was the weakest? (a) design A (b) design C (c) design B
17. 17.🧪 Three prototype bridges were tested with the same method. Design A held 250 g, design B held 350 g and design C held 300 g. Which design was the strongest? (a) design B (b) design C (c) design A
18. 18.🧪 Is it good or poor testing to guess, do not measure? (a) poor testing (b) good testing
19. 19.🧪 The first prototype held 170 g. After the team improved it, the new prototype held 350 g. How many more grams did it hold?
20. 20.True or false: to change only one thing is good testing. (a) True (b) False
21. 21.🧪 The first prototype held 80 g. After the team improved it, the new prototype held 100 g. How many more grams did it hold?
22. 22.🧪 A paper bridge was tested three times. It held 250 g, 230 g and 240 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 230 g, design B held 280 g and design C held 180 g. Which design was the weakest? (a) design A (b) design B (c) design C
24. 24.🧪 Is it good or poor testing to repeat each test? (a) poor testing (b) good testing
25. 25.🔢 To build and test a straw bridge, which is the FIRST step? (a) load it with coins (b) sketch three ideas (c) choose and draw one (d) read the challenge rules
26. 26.🧪 A paper bridge was tested three times. It held 240 g, 130 g and 140 g. What is the mean (average) load it held, in grams?
27. 27.🧪 Is it good or poor testing to change only one thing? (a) poor testing (b) good testing
28. 28.🔍 Which is the odd one out? (a) skip writing results (b) test it only once (c) change lots at once (d) record every result
29. 29.🔍 Which is the odd one out? (a) change only one thing (b) repeat each test (c) guess, do not measure (d) record every result
30. 30.🧪 Is it good or poor testing to test it only once? (a) poor testing (b) good testing
31. 31.True or false: to use a new load each time is poor testing. (a) False (b) True
32. 32.🔍 Which is the odd one out? (a) repeat each test (b) change lots at once (c) skip writing results (d) hide a failed test
33. 33.🧪 The first prototype held 80 g. After the team improved it, the new prototype held 130 g. How many more grams did it hold?
34. 34.🔍 Which is the odd one out? (a) measure the same way (b) repeat each test (c) skip writing results (d) record every result
35. 35.True or false: to test it only once is poor testing. (a) False (b) True
36. 36.🧪 A paper bridge was tested three times. It held 430 g, 270 g and 320 g. What is the mean (average) load it held, in grams?
37. 37.🧪 Three prototype bridges were tested with the same method. Design A held 150 g, design B held 100 g and design C held 200 g. Which design was the weakest? (a) design C (b) design B (c) design A
38. 38.True or false: to measure the same way is good testing. (a) False (b) True
39. 39.🧪 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 C (b) design A (c) design B
40. 40.🔢 To build and test a straw bridge, which comes first: “build it with straws” or “choose and draw one”? (a) build it with straws (b) choose and draw one

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