Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 455 · 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.🔢 To build and test a straw bridge, which is the FIRST step? (a) sketch three ideas (b) read the challenge rules (c) build it with straws (d) choose and draw one
2. 2.🧪 What is a prototype? (a) the final product (b) a broken part (c) a sales poster (d) an early test model
3. 3.True or false: to repeat each test is poor testing. (a) False (b) True
4. 4.🧪 A paper bridge was tested three times. It held 220 g, 180 g and 260 g. What is the mean (average) load it held, in grams?
5. 5.🧪 Three prototype bridges were tested with the same method. Design A held 220 g, design B held 120 g and design C held 170 g. Which design was the weakest? (a) design C (b) design B (c) design A
6. 6.True or false: to skip writing results is poor testing. (a) False (b) True
7. 7.🔢 To build and test a straw bridge, what comes right after “read the challenge rules”? (a) strengthen the weak part (b) sketch three ideas (c) choose and draw one (d) build it with straws
8. 8.🧪 A paper bridge was tested three times. It held 280 g, 210 g and 140 g. What is the mean (average) load it held, in grams?
9. 9.🔢 To build and test a straw bridge, which comes first: “choose and draw one” or “strengthen the weak part”? (a) choose and draw one (b) strengthen the weak part
10. 10.🧪 A paper bridge was tested three times. It held 290 g, 220 g and 270 g. What is the mean (average) load it held, in grams?
11. 11.🧪 A paper bridge was tested three times. It held 290 g, 210 g and 190 g. What is the mean (average) load it held, in grams?
12. 12.🧪 Why do engineers make prototypes? (a) to sell them at once (b) to test ideas cheaply (c) to decorate a room (d) to avoid testing
13. 13.🔍 Which is the odd one out? (a) test it only once (b) use a new load each time (c) measure the same way (d) change lots at once
14. 14.🔍 Which is the odd one out? (a) change lots at once (b) repeat each test (c) use the same load (d) change only one thing
15. 15.🧪 Is it good or poor testing to use a new load each time? (a) poor testing (b) good testing
16. 16.🧪 The first prototype held 150 g. After the team improved it, the new prototype held 280 g. How many more grams did it hold?
17. 17.🧪 Is it good or poor testing to repeat each test? (a) poor testing (b) good testing
18. 18.🧪 A paper bridge was tested three times. It held 290 g, 200 g and 230 g. What is the mean (average) load it held, in grams?
19. 19.🔍 Which is the odd one out? (a) repeat each test (b) measure the same way (c) record every result (d) guess, do not measure
20. 20.🧪 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
21. 21.🧪 Is it good or poor testing to skip writing results? (a) good testing (b) poor testing
22. 22.True or false: to record every result is good testing. (a) False (b) True
23. 23.🧪 A paper bridge was tested three times. It held 220 g, 90 g and 260 g. What is the mean (average) load it held, in grams?
24. 24.🔢 To build and test a straw bridge, which is the LAST step? (a) read the challenge rules (b) choose and draw one (c) strengthen the weak part (d) sketch three ideas
25. 25.🔢 To build and test a straw bridge, which comes first: “load it with coins” or “choose and draw one”? (a) load it with coins (b) choose and draw one
26. 26.🧪 Three prototype bridges were tested with the same method. Design A held 320 g, design B held 220 g and design C held 270 g. Which design was the weakest? (a) design C (b) design B (c) design A
27. 27.🧪 Is it good or poor testing to use the same load? (a) good testing (b) poor testing
28. 28.True or false: to guess, do not measure is good testing. (a) False (b) True
29. 29.🔍 Which is the odd one out? (a) use the same load (b) record every result (c) repeat each test (d) test it only once
30. 30.🔍 Which is the odd one out? (a) hide a failed test (b) skip writing results (c) repeat each test (d) test it only once
31. 31.True or false: to use a new load each time is good testing. (a) False (b) True
32. 32.True or false: to record every result is poor testing. (a) False (b) True
33. 33.🔍 Which is the odd one out? (a) record every result (b) repeat each test (c) hide a failed test (d) change only one thing
34. 34.🧪 The first prototype held 110 g. After the team improved it, the new prototype held 200 g. How many more grams did it hold?
35. 35.True or false: to repeat each test is good testing. (a) True (b) False
36. 36.🧪 Three prototype bridges were tested with the same method. Design A held 260 g, design B held 310 g and design C held 360 g. Which design was the weakest? (a) design A (b) design C (c) design B
37. 37.True or false: to test it only once is poor testing. (a) True (b) False
38. 38.🧪 A paper bridge was tested three times. It held 380 g, 260 g and 230 g. What is the mean (average) load it held, in grams?
39. 39.🧪 Is it good or poor testing to change only one thing? (a) poor testing (b) good testing
40. 40.🔍 Which is the odd one out? (a) repeat each test (b) change only one thing (c) record every result (d) use a new load each time

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