Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 174 · 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.True or false: to test it only once is poor testing. (a) True (b) False
2. 2.🔢 To build and test a straw bridge, which is the FIRST step? (a) choose and draw one (b) load it with coins (c) read the challenge rules (d) build it with straws
3. 3.🔍 Which is the odd one out? (a) use the same load (b) measure the same way (c) change only one thing (d) test it only once
4. 4.True or false: to guess, do not measure is poor testing. (a) True (b) False
5. 5.🧪 Three prototype bridges were tested with the same method. Design A held 220 g, design B held 270 g and design C held 170 g. Which design was the weakest? (a) design B (b) design C (c) design A
6. 6.🔢 To build and test a straw bridge, what comes right after “sketch three ideas”? (a) load it with coins (b) read the challenge rules (c) strengthen the weak part (d) choose and draw one
7. 7.🧪 The first prototype held 130 g. After the team improved it, the new prototype held 240 g. How many more grams did it hold?
8. 8.🧪 Is it good or poor testing to use a new load each time? (a) good testing (b) poor testing
9. 9.🧪 The first prototype held 200 g. After the team improved it, the new prototype held 240 g. How many more grams did it hold?
10. 10.🔍 Which is the odd one out? (a) hide a failed test (b) guess, do not measure (c) use the same load (d) change lots at once
11. 11.🧪 The first prototype held 290 g. After the team improved it, the new prototype held 490 g. How many more grams did it hold?
12. 12.🧪 Is it good or poor testing to record every result? (a) good testing (b) poor testing
13. 13.🧪 Three prototype bridges were tested with the same method. Design A held 210 g, design B held 260 g and design C held 160 g. Which design was the strongest? (a) design B (b) design A (c) design C
14. 14.🔢 To build and test a straw bridge, which comes first: “read the challenge rules” or “build it with straws”? (a) build it with straws (b) read the challenge rules
15. 15.True or false: to repeat each test is poor testing. (a) False (b) True
16. 16.🔢 To build and test a straw bridge, what comes right after “read the challenge rules”? (a) choose and draw one (b) build it with straws (c) load it with coins (d) sketch three ideas
17. 17.True or false: to change only one thing is good testing. (a) True (b) False
18. 18.🧪 Three prototype bridges were tested with the same method. Design A held 360 g, design B held 260 g and design C held 310 g. Which design was the weakest? (a) design C (b) design A (c) design B
19. 19.🧪 The first prototype held 270 g. After the team improved it, the new prototype held 280 g. How many more grams did it hold?
20. 20.🧪 A paper bridge was tested three times. It held 300 g, 230 g and 340 g. What is the mean (average) load it held, in grams?
21. 21.🧪 Three prototype bridges were tested with the same method. Design A held 120 g, design B held 220 g and design C held 170 g. Which design was the weakest? (a) design B (b) design C (c) design A
22. 22.🧪 Three prototype bridges were tested with the same method. Design A held 280 g, design B held 180 g and design C held 230 g. Which design was the weakest? (a) design C (b) design A (c) design B
23. 23.True or false: to record every result is good testing. (a) False (b) True
24. 24.🧪 Is it good or poor testing to repeat each test? (a) good testing (b) poor testing
25. 25.🧪 In a fair test, how many things do you change at a time? (a) none (b) two (c) one (d) all of them
26. 26.🧪 Is it good or poor testing to change lots at once? (a) good testing (b) poor testing
27. 27.🧪 Why do engineers make prototypes? (a) to avoid testing (b) to decorate a room (c) to sell them at once (d) to test ideas cheaply
28. 28.🔍 Which is the odd one out? (a) record every result (b) use a new load each time (c) measure the same way (d) use the same load
29. 29.🔍 Which is the odd one out? (a) skip writing results (b) guess, do not measure (c) measure the same way (d) hide a failed test
30. 30.🔍 Which is the odd one out? (a) guess, do not measure (b) record every result (c) use a new load each time (d) hide a failed test
31. 31.True or false: to measure the same way is good testing. (a) False (b) True
32. 32.🧪 Is it good or poor testing to test it only once? (a) good testing (b) poor testing
33. 33.🔢 To build and test a straw bridge, which comes first: “strengthen the weak part” or “sketch three ideas”? (a) sketch three ideas (b) strengthen the weak part
34. 34.🧪 The first prototype held 230 g. After the team improved it, the new prototype held 350 g. How many more grams did it hold?
35. 35.🧪 A paper bridge was tested three times. It held 340 g, 200 g and 360 g. What is the mean (average) load it held, in grams?
36. 36.True or false: to change only one thing is poor testing. (a) True (b) False
37. 37.🔢 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) build it with straws
38. 38.True or false: to use the same load is poor testing. (a) True (b) False
39. 39.🧪 The first prototype held 210 g. After the team improved it, the new prototype held 400 g. How many more grams did it hold?
40. 40.🧪 What is a prototype? (a) an early test model (b) the final product (c) a broken part (d) a sales poster

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