Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 45 · 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 use a new load each time is poor testing. (a) True (b) False
2. 2.🧪 The first prototype held 200 g. After the team improved it, the new prototype held 250 g. How many more grams did it hold?
3. 3.🧪 Is it good or poor testing to change lots at once? (a) good testing (b) poor testing
4. 4.🧪 A paper bridge was tested three times. It held 310 g, 260 g and 360 g. What is the mean (average) load it held, in grams?
5. 5.🧪 Why repeat a test three times? (a) the first is wrong (b) to use more paper (c) to get reliable results (d) it looks busy
6. 6.True or false: to test it only once is good testing. (a) True (b) False
7. 7.🧪 Three prototype bridges were tested with the same method. Design A held 290 g, design B held 390 g and design C held 340 g. Which design was the strongest? (a) design A (b) design B (c) design C
8. 8.🔢 To build and test a straw bridge, which is the FIRST step? (a) load it with coins (b) choose and draw one (c) read the challenge rules (d) sketch three ideas
9. 9.🧪 Is it good or poor testing to skip writing results? (a) good testing (b) poor testing
10. 10.🔍 Which is the odd one out? (a) use the same load (b) change lots at once (c) change only one thing (d) measure the same way
11. 11.🔍 Which is the odd one out? (a) measure the same way (b) change only one thing (c) use the same load (d) hide a failed test
12. 12.🔢 To build and test a straw bridge, which comes first: “load it with coins” or “sketch three ideas”? (a) load it with coins (b) sketch three ideas
13. 13.True or false: to repeat each test is poor testing. (a) True (b) False
14. 14.🔢 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
15. 15.🔢 To build and test a straw bridge, which is the LAST step? (a) sketch three ideas (b) choose and draw one (c) read the challenge rules (d) strengthen the weak part
16. 16.🔢 To build and test a straw bridge, which comes first: “build it with straws” or “load it with coins”? (a) build it with straws (b) load it with coins
17. 17.🧪 A paper bridge was tested three times. It held 350 g, 200 g and 290 g. What is the mean (average) load it held, in grams?
18. 18.True or false: to guess, do not measure is poor testing. (a) True (b) False
19. 19.🧪 Is it good or poor testing to change only one thing? (a) good testing (b) poor testing
20. 20.True or false: to measure the same way is poor testing. (a) True (b) False
21. 21.True or false: to change lots at once is good testing. (a) True (b) False
22. 22.🧪 The first prototype held 50 g. After the team improved it, the new prototype held 90 g. How many more grams did it hold?
23. 23.🧪 The first prototype held 210 g. After the team improved it, the new prototype held 230 g. How many more grams did it hold?
24. 24.🧪 Is it good or poor testing to guess, do not measure? (a) good testing (b) poor testing
25. 25.🔢 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
26. 26.🧪 Three prototype bridges were tested with the same method. Design A held 240 g, design B held 190 g and design C held 290 g. Which design was the weakest? (a) design A (b) design C (c) design B
27. 27.🔍 Which is the odd one out? (a) guess, do not measure (b) test it only once (c) use a new load each time (d) repeat each test
28. 28.🧪 A paper bridge was tested three times. It held 360 g, 260 g and 280 g. What is the mean (average) load it held, in grams?
29. 29.True or false: to hide a failed test is poor testing. (a) False (b) True
30. 30.True or false: to use the same load is good testing. (a) False (b) True
31. 31.🧪 What is a prototype? (a) a sales poster (b) an early test model (c) a broken part (d) the final product
32. 32.🔍 Which is the odd one out? (a) use the same load (b) change only one thing (c) measure the same way (d) test it only once
33. 33.True or false: to change only one thing is good testing. (a) False (b) True
34. 34.🧪 Three prototype bridges were tested with the same method. Design A held 250 g, design B held 300 g and design C held 200 g. Which design was the weakest? (a) design B (b) design A (c) design C
35. 35.🧪 Three prototype bridges were tested with the same method. Design A held 250 g, design B held 150 g and design C held 200 g. Which design was the strongest? (a) design A (b) design B (c) design C
36. 36.🧪 In a fair test, how many things do you change at a time? (a) one (b) two (c) none (d) all of them
37. 37.🧪 Why do engineers make prototypes? (a) to test ideas cheaply (b) to sell them at once (c) to decorate a room (d) to avoid testing
38. 38.🧪 A paper bridge was tested three times. It held 340 g, 260 g and 240 g. What is the mean (average) load it held, in grams?
39. 39.🔍 Which is the odd one out? (a) record every result (b) guess, do not measure (c) measure the same way (d) change only one thing
40. 40.🔢 To build and test a straw bridge, which comes first: “read the challenge rules” or “load it with coins”? (a) load it with coins (b) read the challenge rules

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