Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 969 · 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.🧪 Is it good or poor testing to measure the same way? (a) good testing (b) poor testing
2. 2.🧪 In a fair test, how many things do you change at a time? (a) none (b) two (c) one (d) all of them
3. 3.True or false: to change only one thing is good testing. (a) True (b) False
4. 4.🧪 A paper bridge was tested three times. It held 270 g, 140 g and 160 g. What is the mean (average) load it held, in grams?
5. 5.🔢 To build and test a straw bridge, which is the LAST step? (a) read the challenge rules (b) strengthen the weak part (c) choose and draw one (d) sketch three ideas
6. 6.🔢 To build and test a straw bridge, what comes right after “choose and draw one”? (a) strengthen the weak part (b) read the challenge rules (c) build it with straws (d) load it with coins
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 weakest? (a) design A (b) design B (c) design C
8. 8.🔢 To build and test a straw bridge, which is the FIRST step? (a) build it with straws (b) read the challenge rules (c) sketch three ideas (d) load it with coins
9. 9.🧪 Three prototype bridges were tested with the same method. Design A held 320 g, design B held 270 g and design C held 370 g. Which design was the weakest? (a) design A (b) design B (c) design C
10. 10.True or false: to repeat each test is good testing. (a) True (b) False
11. 11.🧪 A paper bridge was tested three times. It held 210 g, 190 g and 170 g. What is the mean (average) load it held, in grams?
12. 12.🧪 A paper bridge was tested three times. It held 360 g, 230 g and 400 g. What is the mean (average) load it held, in grams?
13. 13.🧪 A paper bridge was tested three times. It held 260 g, 150 g and 190 g. What is the mean (average) load it held, in grams?
14. 14.🧪 Is it good or poor testing to guess, do not measure? (a) good testing (b) poor testing
15. 15.🧪 A paper bridge was tested three times. It held 290 g, 260 g and 320 g. What is the mean (average) load it held, in grams?
16. 16.🧪 Why do engineers make prototypes? (a) to decorate a room (b) to avoid testing (c) to test ideas cheaply (d) to sell them at once
17. 17.🔍 Which is the odd one out? (a) use the same load (b) measure the same way (c) hide a failed test (d) record every result
18. 18.🧪 The first prototype held 240 g. After the team improved it, the new prototype held 430 g. How many more grams did it hold?
19. 19.True or false: to skip writing results is good testing. (a) True (b) False
20. 20.🔢 To build and test a straw bridge, what comes right after “load it with coins”? (a) strengthen the weak part (b) sketch three ideas (c) build it with straws (d) choose and draw one
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 280 g, 190 g and 220 g. What is the mean (average) load it held, in grams?
23. 23.🧪 A paper bridge was tested three times. It held 340 g, 220 g and 280 g. What is the mean (average) load it held, in grams?
24. 24.True or false: to measure the same way is poor testing. (a) False (b) True
25. 25.🔍 Which is the odd one out? (a) use a new load each time (b) change lots at once (c) guess, do not measure (d) record every result
26. 26.True or false: to use a new load each time is good testing. (a) True (b) False
27. 27.🔍 Which is the odd one out? (a) change lots at once (b) use a new load each time (c) measure the same way (d) hide a failed test
28. 28.🧪 Why repeat a test three times? (a) to use more paper (b) the first is wrong (c) to get reliable results (d) it looks busy
29. 29.🔢 To build and test a straw bridge, what comes right after “read the challenge rules”? (a) sketch three ideas (b) load it with coins (c) strengthen the weak part (d) choose and draw one
30. 30.🧪 Three prototype bridges were tested with the same method. Design A held 160 g, design B held 110 g and design C held 210 g. Which design was the weakest? (a) design A (b) design C (c) design B
31. 31.True or false: to repeat each test is poor testing. (a) True (b) False
32. 32.🧪 Three prototype bridges were tested with the same method. Design A held 330 g, design B held 380 g and design C held 280 g. Which design was the weakest? (a) design A (b) design C (c) design B
33. 33.🧪 The first prototype held 140 g. After the team improved it, the new prototype held 320 g. How many more grams did it hold?
34. 34.🧪 A paper bridge was tested three times. It held 240 g, 130 g and 320 g. What is the mean (average) load it held, in grams?
35. 35.🔍 Which is the odd one out? (a) use a new load each time (b) skip writing results (c) change only one thing (d) test it only once
36. 36.🧪 Three prototype bridges were tested with the same method. Design A held 260 g, design B held 360 g and design C held 310 g. Which design was the weakest? (a) design C (b) design B (c) design A
37. 37.🔍 Which is the odd one out? (a) change only one thing (b) use a new load each time (c) record every result (d) measure the same way
38. 38.🔢 To build and test a straw bridge, which comes first: “strengthen the weak part” or “build it with straws”? (a) strengthen the weak part (b) build it with straws
39. 39.True or false: to change lots at once is good testing. (a) True (b) False
40. 40.🧪 Is it good or poor testing to record every result? (a) poor testing (b) good testing

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