Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 911 · 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.🧪 The first prototype held 230 g. After the team improved it, the new prototype held 430 g. How many more grams did it hold?
2. 2.True or false: to change lots at once is good testing. (a) False (b) True
3. 3.🧪 A paper bridge was tested three times. It held 190 g, 120 g and 200 g. What is the mean (average) load it held, in grams?
4. 4.🧪 Is it good or poor testing to measure the same way? (a) good testing (b) poor testing
5. 5.🔢 To build and test a straw bridge, which is the LAST step? (a) build it with straws (b) strengthen the weak part (c) load it with coins (d) read the challenge rules
6. 6.🧪 Three prototype bridges were tested with the same method. Design A held 310 g, design B held 260 g and design C held 360 g. Which design was the strongest? (a) design A (b) design B (c) design C
7. 7.🧪 Is it good or poor testing to skip writing results? (a) good testing (b) poor testing
8. 8.True or false: to skip writing results is poor testing. (a) False (b) True
9. 9.🧪 Is it good or poor testing to hide a failed test? (a) poor testing (b) good testing
10. 10.True or false: to guess, do not measure is good testing. (a) True (b) False
11. 11.🧪 Is it good or poor testing to record every result? (a) good testing (b) poor testing
12. 12.🧪 Three prototype bridges were tested with the same method. Design A held 240 g, design B held 340 g and design C held 290 g. Which design was the strongest? (a) design B (b) design C (c) design A
13. 13.🧪 A paper bridge was tested three times. It held 290 g, 190 g and 270 g. What is the mean (average) load it held, in grams?
14. 14.🧪 The first prototype held 230 g. After the team improved it, the new prototype held 410 g. How many more grams did it hold?
15. 15.🔢 To build and test a straw bridge, what comes right after “load it with coins”? (a) choose and draw one (b) sketch three ideas (c) strengthen the weak part (d) read the challenge rules
16. 16.True or false: to repeat each test is poor testing. (a) False (b) True
17. 17.🧪 In a fair test, how many things do you change at a time? (a) one (b) all of them (c) none (d) two
18. 18.True or false: to use the same load is poor testing. (a) True (b) False
19. 19.🧪 Three prototype bridges were tested with the same method. Design A held 350 g, design B held 400 g and design C held 300 g. Which design was the weakest? (a) design C (b) design B (c) design A
20. 20.🧪 A paper bridge was tested three times. It held 220 g, 130 g and 220 g. What is the mean (average) load it held, in grams?
21. 21.🧪 Is it good or poor testing to test it only once? (a) poor testing (b) good testing
22. 22.🔍 Which is the odd one out? (a) skip writing results (b) hide a failed test (c) measure the same way (d) test it only once
23. 23.🔢 To build and test a straw bridge, which is the FIRST step? (a) choose and draw one (b) read the challenge rules (c) build it with straws (d) sketch three ideas
24. 24.🧪 A paper bridge was tested three times. It held 370 g, 350 g and 330 g. What is the mean (average) load it held, in grams?
25. 25.True or false: to test it only once is good testing. (a) False (b) True
26. 26.True or false: to record every result is good testing. (a) False (b) True
27. 27.🔢 To build and test a straw bridge, what comes right after “build it with straws”? (a) sketch three ideas (b) load it with coins (c) choose and draw one (d) read the challenge rules
28. 28.🧪 A paper bridge was tested three times. It held 340 g, 220 g and 190 g. What is the mean (average) load it held, in grams?
29. 29.🔍 Which is the odd one out? (a) skip writing results (b) repeat each test (c) hide a failed test (d) test it only once
30. 30.🧪 A paper bridge was tested three times. It held 310 g, 210 g and 320 g. What is the mean (average) load it held, in grams?
31. 31.🔍 Which is the odd one out? (a) change lots at once (b) measure the same way (c) record every result (d) repeat each test
32. 32.🔢 To build and test a straw bridge, what comes right after “sketch three ideas”? (a) strengthen the weak part (b) build it with straws (c) read the challenge rules (d) choose and draw one
33. 33.🧪 Is it good or poor testing to use a new load each time? (a) good testing (b) poor testing
34. 34.🧪 The first prototype held 140 g. After the team improved it, the new prototype held 290 g. How many more grams did it hold?
35. 35.True or false: to measure the same way is poor testing. (a) False (b) True
36. 36.🔢 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
37. 37.🔢 To build and test a straw bridge, what comes right after “choose and draw one”? (a) load it with coins (b) sketch three ideas (c) build it with straws (d) read the challenge rules
38. 38.🔍 Which is the odd one out? (a) change lots at once (b) use the same load (c) use a new load each time (d) guess, do not measure
39. 39.🧪 Why do engineers make prototypes? (a) to test ideas cheaply (b) to sell them at once (c) to avoid testing (d) to decorate a room
40. 40.🧪 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 weakest? (a) design B (b) design A (c) design C

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