Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 667 · 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 record every result is poor testing. (a) False (b) True
2. 2.True or false: to hide a failed test is good testing. (a) False (b) True
3. 3.🧪 What is a prototype? (a) a sales poster (b) an early test model (c) a broken part (d) the final product
4. 4.🔢 To build and test a straw bridge, what comes right after “load it with coins”? (a) build it with straws (b) strengthen the weak part (c) read the challenge rules (d) sketch three ideas
5. 5.🔢 To build and test a straw bridge, which comes first: “load it with coins” or “read the challenge rules”? (a) load it with coins (b) read the challenge rules
6. 6.🧪 Three prototype bridges were tested with the same method. Design A held 220 g, design B held 170 g and design C held 120 g. Which design was the weakest? (a) design B (b) design C (c) design A
7. 7.🧪 Why do engineers make prototypes? (a) to decorate a room (b) to avoid testing (c) to sell them at once (d) to test ideas cheaply
8. 8.🧪 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 weakest? (a) design C (b) design B (c) design A
9. 9.🔢 To build and test a straw bridge, which comes first: “read the challenge rules” or “build it with straws”? (a) read the challenge rules (b) build it with straws
10. 10.🔍 Which is the odd one out? (a) use a new load each time (b) hide a failed test (c) change lots at once (d) repeat each test
11. 11.🔍 Which is the odd one out? (a) measure the same way (b) guess, do not measure (c) test it only once (d) use a new load each time
12. 12.🔍 Which is the odd one out? (a) change only one thing (b) change lots at once (c) measure the same way (d) use the same load
13. 13.🧪 Is it good or poor testing to change only one thing? (a) good testing (b) poor testing
14. 14.🧪 Why repeat a test three times? (a) to get reliable results (b) to use more paper (c) it looks busy (d) the first is wrong
15. 15.🧪 In a fair test, how many things do you change at a time? (a) all of them (b) two (c) none (d) one
16. 16.🧪 The first prototype held 120 g. After the team improved it, the new prototype held 160 g. How many more grams did it hold?
17. 17.🧪 A paper bridge was tested three times. It held 200 g, 150 g and 160 g. What is the mean (average) load it held, in grams?
18. 18.🔢 To build and test a straw bridge, what comes right after “read the challenge rules”? (a) choose and draw one (b) load it with coins (c) sketch three ideas (d) build it with straws
19. 19.🧪 Is it good or poor testing to use the same load? (a) poor testing (b) good testing
20. 20.🔢 To build and test a straw bridge, what comes right after “sketch three ideas”? (a) build it with straws (b) read the challenge rules (c) load it with coins (d) choose and draw one
21. 21.🔢 To build and test a straw bridge, which comes first: “read the challenge rules” or “sketch three ideas”? (a) read the challenge rules (b) sketch three ideas
22. 22.🔢 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) load it with coins
23. 23.🧪 Is it good or poor testing to skip writing results? (a) poor testing (b) good testing
24. 24.🧪 The first prototype held 140 g. After the team improved it, the new prototype held 320 g. How many more grams did it hold?
25. 25.🧪 The first prototype held 190 g. After the team improved it, the new prototype held 340 g. How many more grams did it hold?
26. 26.🧪 Three prototype bridges were tested with the same method. Design A held 250 g, design B held 200 g and design C held 150 g. Which design was the weakest? (a) design B (b) design C (c) design A
27. 27.🧪 Is it good or poor testing to repeat each test? (a) good testing (b) poor testing
28. 28.🧪 The first prototype held 160 g. After the team improved it, the new prototype held 180 g. How many more grams did it hold?
29. 29.🧪 Three prototype bridges were tested with the same method. Design A held 220 g, design B held 270 g and design C held 320 g. Which design was the weakest? (a) design C (b) design B (c) design A
30. 30.🧪 The first prototype held 120 g. After the team improved it, the new prototype held 250 g. How many more grams did it hold?
31. 31.🧪 Is it good or poor testing to measure the same way? (a) poor testing (b) good testing
32. 32.🧪 Three prototype bridges were tested with the same method. Design A held 160 g, design B held 210 g and design C held 110 g. Which design was the weakest? (a) design A (b) design C (c) design B
33. 33.True or false: to change only one thing is good testing. (a) True (b) False
34. 34.🔢 To build and test a straw bridge, which comes first: “read the challenge rules” or “choose and draw one”? (a) read the challenge rules (b) choose and draw one
35. 35.🔍 Which is the odd one out? (a) change only one thing (b) use the same load (c) hide a failed test (d) measure the same way
36. 36.🧪 The first prototype held 70 g. After the team improved it, the new prototype held 180 g. How many more grams did it hold?
37. 37.🧪 Is it good or poor testing to change lots at once? (a) good testing (b) poor testing
38. 38.True or false: to guess, do not measure is good testing. (a) False (b) True
39. 39.True or false: to use the same load is poor testing. (a) True (b) False
40. 40.🧪 The first prototype held 290 g. After the team improved it, the new prototype held 350 g. How many more grams did it hold?

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