Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 520 · 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 change lots at once? (a) poor testing (b) good testing
2. 2.True or false: to record every result is poor testing. (a) False (b) True
3. 3.🔍 Which is the odd one out? (a) use a new load each time (b) skip writing results (c) record every result (d) guess, do not measure
4. 4.🔍 Which is the odd one out? (a) use the same load (b) repeat each test (c) change only one thing (d) use a new load each time
5. 5.🧪 The first prototype held 90 g. After the team improved it, the new prototype held 120 g. How many more grams did it hold?
6. 6.🔢 To build and test a straw bridge, which comes first: “sketch three ideas” or “strengthen the weak part”? (a) sketch three ideas (b) strengthen the weak part
7. 7.🧪 Three prototype bridges were tested with the same method. Design A held 380 g, design B held 280 g and design C held 330 g. Which design was the weakest? (a) design A (b) design C (c) design B
8. 8.🔢 To build and test a straw bridge, which comes first: “strengthen the weak part” or “read the challenge rules”? (a) strengthen the weak part (b) read the challenge rules
9. 9.🧪 In a fair test, how many things do you change at a time? (a) all of them (b) none (c) one (d) two
10. 10.🧪 The first prototype held 190 g. After the team improved it, the new prototype held 310 g. How many more grams did it hold?
11. 11.🧪 The first prototype held 280 g. After the team improved it, the new prototype held 460 g. How many more grams did it hold?
12. 12.🔍 Which is the odd one out? (a) measure the same way (b) skip writing results (c) use the same load (d) change only one thing
13. 13.🧪 A paper bridge was tested three times. It held 220 g, 110 g and 300 g. What is the mean (average) load it held, in grams?
14. 14.🧪 Is it good or poor testing to record every result? (a) good testing (b) poor testing
15. 15.🧪 Why do engineers make prototypes? (a) to test ideas cheaply (b) to decorate a room (c) to avoid testing (d) to sell them at once
16. 16.True or false: to test it only once is poor testing. (a) False (b) True
17. 17.🧪 Three prototype bridges were tested with the same method. Design A held 110 g, design B held 160 g and design C held 210 g. Which design was the weakest? (a) design B (b) design A (c) design C
18. 18.🧪 A paper bridge was tested three times. It held 340 g, 310 g and 340 g. What is the mean (average) load it held, in grams?
19. 19.True or false: to use a new load each time is poor testing. (a) True (b) False
20. 20.🧪 Is it good or poor testing to measure the same way? (a) good testing (b) poor testing
21. 21.True or false: to use the same load is poor testing. (a) False (b) True
22. 22.🔢 To build and test a straw bridge, which is the LAST step? (a) build it with straws (b) read the challenge rules (c) choose and draw one (d) strengthen the weak part
23. 23.🔢 To build and test a straw bridge, which comes first: “read the challenge rules” or “sketch three ideas”? (a) sketch three ideas (b) read the challenge rules
24. 24.🧪 Three prototype bridges were tested with the same method. Design A held 270 g, design B held 220 g and design C held 170 g. Which design was the weakest? (a) design B (b) design A (c) design C
25. 25.🧪 Is it good or poor testing to repeat each test? (a) poor testing (b) good testing
26. 26.True or false: to guess, do not measure is good testing. (a) False (b) True
27. 27.🔍 Which is the odd one out? (a) repeat each test (b) use the same load (c) hide a failed test (d) change only one thing
28. 28.🔍 Which is the odd one out? (a) test it only once (b) change lots at once (c) use a new load each time (d) measure the same way
29. 29.🧪 A paper bridge was tested three times. It held 330 g, 200 g and 190 g. What is the mean (average) load it held, in grams?
30. 30.🔢 To build and test a straw bridge, which comes first: “choose and draw one” or “read the challenge rules”? (a) choose and draw one (b) read the challenge rules
31. 31.🧪 Is it good or poor testing to test it only once? (a) good testing (b) poor testing
32. 32.True or false: to change lots at once is poor testing. (a) False (b) True
33. 33.🔢 To build and test a straw bridge, which is the FIRST step? (a) choose and draw one (b) strengthen the weak part (c) load it with coins (d) read the challenge rules
34. 34.🔢 To build and test a straw bridge, what comes right after “sketch three ideas”? (a) build it with straws (b) choose and draw one (c) strengthen the weak part (d) read the challenge rules
35. 35.🔍 Which is the odd one out? (a) record every result (b) test it only once (c) change only one thing (d) use the same load
36. 36.🧪 The first prototype held 130 g. After the team improved it, the new prototype held 270 g. How many more grams did it hold?
37. 37.🧪 The first prototype held 80 g. After the team improved it, the new prototype held 230 g. How many more grams did it hold?
38. 38.🧪 Three prototype bridges were tested with the same method. Design A held 190 g, design B held 240 g and design C held 140 g. Which design was the strongest? (a) design A (b) design C (c) design B
39. 39.🧪 Is it good or poor testing to use the same load? (a) good testing (b) poor testing
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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