Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 743 · 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, what comes right after “choose and draw one”? (a) build it with straws (b) load it with coins (c) strengthen the weak part (d) read the challenge rules
2. 2.🧪 Why repeat a test three times? (a) it looks busy (b) the first is wrong (c) to get reliable results (d) to use more paper
3. 3.🧪 Is it good or poor testing to measure the same way? (a) good testing (b) poor testing
4. 4.🧪 The first prototype held 270 g. After the team improved it, the new prototype held 450 g. How many more grams did it hold?
5. 5.🧪 Three prototype bridges were tested with the same method. Design A held 250 g, design B held 200 g and design C held 300 g. Which design was the weakest? (a) design C (b) design A (c) design B
6. 6.🔍 Which is the odd one out? (a) repeat each test (b) hide a failed test (c) skip writing results (d) use a new load each time
7. 7.🧪 Three prototype bridges were tested with the same method. Design A held 260 g, design B held 210 g and design C held 310 g. Which design was the strongest? (a) design C (b) design A (c) design B
8. 8.True or false: to record every result is good testing. (a) True (b) False
9. 9.🔍 Which is the odd one out? (a) guess, do not measure (b) change lots at once (c) use the same load (d) test it only once
10. 10.🧪 A paper bridge was tested three times. It held 260 g, 100 g and 120 g. What is the mean (average) load it held, in grams?
11. 11.True or false: to skip writing results is poor testing. (a) False (b) True
12. 12.True or false: to change only one thing is good testing. (a) True (b) False
13. 13.🧪 Is it good or poor testing to hide a failed test? (a) poor testing (b) good testing
14. 14.🧪 A paper bridge was tested three times. It held 340 g, 240 g and 140 g. What is the mean (average) load it held, in grams?
15. 15.🧪 What is a prototype? (a) the final product (b) a sales poster (c) a broken part (d) an early test model
16. 16.🧪 Is it good or poor testing to record every result? (a) good testing (b) poor testing
17. 17.🧪 In a fair test, how many things do you change at a time? (a) all of them (b) none (c) two (d) one
18. 18.True or false: to change lots at once is good testing. (a) False (b) True
19. 19.🧪 Is it good or poor testing to skip writing results? (a) good testing (b) poor testing
20. 20.True or false: to change only one thing is poor testing. (a) True (b) False
21. 21.🧪 Is it good or poor testing to change only one thing? (a) good testing (b) poor testing
22. 22.🧪 A paper bridge was tested three times. It held 260 g, 90 g and 190 g. What is the mean (average) load it held, in grams?
23. 23.True or false: to test it only once is good testing. (a) True (b) False
24. 24.🔢 To build and test a straw bridge, which is the LAST step? (a) sketch three ideas (b) read the challenge rules (c) load it with coins (d) strengthen the weak part
25. 25.🧪 The first prototype held 110 g. After the team improved it, the new prototype held 300 g. How many more grams did it hold?
26. 26.🔍 Which is the odd one out? (a) use the same load (b) measure the same way (c) change lots at once (d) change only one thing
27. 27.🧪 A paper bridge was tested three times. It held 220 g, 190 g and 190 g. What is the mean (average) load it held, in grams?
28. 28.🧪 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 B (b) design C (c) design A
29. 29.🧪 Is it good or poor testing to repeat each test? (a) poor testing (b) good testing
30. 30.🔍 Which is the odd one out? (a) hide a failed test (b) record every result (c) skip writing results (d) test it only once
31. 31.🔢 To build and test a straw bridge, what comes right after “load it with coins”? (a) read the challenge rules (b) sketch three ideas (c) strengthen the weak part (d) build it with straws
32. 32.🔢 To build and test a straw bridge, which comes first: “sketch three ideas” or “choose and draw one”? (a) sketch three ideas (b) choose and draw one
33. 33.🔢 To build and test a straw bridge, which comes first: “sketch three ideas” or “read the challenge rules”? (a) read the challenge rules (b) sketch three ideas
34. 34.🧪 A paper bridge was tested three times. It held 370 g, 270 g and 230 g. What is the mean (average) load it held, in grams?
35. 35.True or false: to use the same load is poor testing. (a) False (b) True
36. 36.🧪 Is it good or poor testing to test it only once? (a) poor testing (b) good testing
37. 37.🧪 Why do engineers make prototypes? (a) to sell them at once (b) to test ideas cheaply (c) to avoid testing (d) to decorate a room
38. 38.🧪 Three prototype bridges were tested with the same method. Design A held 400 g, design B held 300 g and design C held 350 g. Which design was the weakest? (a) design C (b) design A (c) design B
39. 39.🧪 A paper bridge was tested three times. It held 330 g, 290 g and 370 g. What is the mean (average) load it held, in grams?
40. 40.🧪 A paper bridge was tested three times. It held 270 g, 150 g and 240 g. What is the mean (average) load it held, in grams?

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