Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 950 · 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 50 g. After the team improved it, the new prototype held 60 g. How many more grams did it hold?
2. 2.🔢 To build and test a straw bridge, what comes right after “sketch three ideas”? (a) load it with coins (b) choose and draw one (c) read the challenge rules (d) build it with straws
3. 3.True or false: to change only one thing is good testing. (a) False (b) True
4. 4.True or false: to guess, do not measure is good testing. (a) True (b) False
5. 5.🧪 Three prototype bridges were tested with the same method. Design A held 210 g, design B held 160 g and design C held 260 g. Which design was the strongest? (a) design B (b) design C (c) design A
6. 6.🧪 A paper bridge was tested three times. It held 270 g, 150 g and 150 g. What is the mean (average) load it held, in grams?
7. 7.🔢 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
8. 8.🔢 To build and test a straw bridge, which is the LAST step? (a) strengthen the weak part (b) build it with straws (c) read the challenge rules (d) load it with coins
9. 9.🧪 Is it good or poor testing to change only one thing? (a) poor testing (b) good testing
10. 10.🧪 The first prototype held 270 g. After the team improved it, the new prototype held 380 g. How many more grams did it hold?
11. 11.🧪 Three prototype bridges were tested with the same method. Design A held 310 g, design B held 210 g and design C held 260 g. Which design was the weakest? (a) design B (b) design C (c) design A
12. 12.🧪 Three prototype bridges were tested with the same method. Design A held 180 g, design B held 230 g and design C held 280 g. Which design was the weakest? (a) design A (b) design C (c) design B
13. 13.🧪 The first prototype held 270 g. After the team improved it, the new prototype held 360 g. How many more grams did it hold?
14. 14.🧪 Why do engineers make prototypes? (a) to sell them at once (b) to test ideas cheaply (c) to avoid testing (d) to decorate a room
15. 15.🔍 Which is the odd one out? (a) measure the same way (b) repeat each test (c) change only one thing (d) test it only once
16. 16.🧪 Three prototype bridges were tested with the same method. Design A held 150 g, design B held 100 g and design C held 200 g. Which design was the strongest? (a) design A (b) design B (c) design C
17. 17.🧪 Is it good or poor testing to hide a failed test? (a) poor testing (b) good testing
18. 18.🔍 Which is the odd one out? (a) change lots at once (b) record every result (c) repeat each test (d) change only one thing
19. 19.🧪 The first prototype held 240 g. After the team improved it, the new prototype held 250 g. How many more grams did it hold?
20. 20.🧪 Is it good or poor testing to measure the same way? (a) poor testing (b) good testing
21. 21.🔢 To build and test a straw bridge, which comes first: “load it with coins” or “choose and draw one”? (a) choose and draw one (b) load it with coins
22. 22.🧪 A paper bridge was tested three times. It held 370 g, 240 g and 260 g. What is the mean (average) load it held, in grams?
23. 23.🧪 The first prototype held 150 g. After the team improved it, the new prototype held 340 g. How many more grams did it hold?
24. 24.🧪 Is it good or poor testing to record every result? (a) good testing (b) poor testing
25. 25.🧪 Is it good or poor testing to guess, do not measure? (a) poor testing (b) good testing
26. 26.🔍 Which is the odd one out? (a) change only one thing (b) guess, do not measure (c) test it only once (d) use a new load each time
27. 27.🧪 The first prototype held 50 g. After the team improved it, the new prototype held 230 g. How many more grams did it hold?
28. 28.🔢 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
29. 29.🧪 Is it good or poor testing to use the same load? (a) good testing (b) poor testing
30. 30.🧪 The first prototype held 50 g. After the team improved it, the new prototype held 220 g. How many more grams did it hold?
31. 31.🔢 To build and test a straw bridge, which comes first: “choose and draw one” or “sketch three ideas”? (a) sketch three ideas (b) choose and draw one
32. 32.🔍 Which is the odd one out? (a) use a new load each time (b) skip writing results (c) guess, do not measure (d) use the same load
33. 33.🧪 Why repeat a test three times? (a) it looks busy (b) to use more paper (c) the first is wrong (d) to get reliable results
34. 34.🧪 The first prototype held 170 g. After the team improved it, the new prototype held 340 g. How many more grams did it hold?
35. 35.🔢 To build and test a straw bridge, what comes right after “read the challenge rules”? (a) choose and draw one (b) sketch three ideas (c) build it with straws (d) strengthen the weak part
36. 36.🧪 The first prototype held 300 g. After the team improved it, the new prototype held 440 g. How many more grams did it hold?
37. 37.True or false: to use the same load is good testing. (a) True (b) False
38. 38.🧪 In a fair test, how many things do you change at a time? (a) two (b) all of them (c) one (d) none
39. 39.True or false: to change lots at once is poor testing. (a) True (b) False
40. 40.🔢 To build and test a straw bridge, which is the FIRST step? (a) load it with coins (b) sketch three ideas (c) choose and draw one (d) read the challenge rules

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