Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 97 · 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.🔢 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
2. 2.🧪 In a fair test, how many things do you change at a time? (a) one (b) none (c) all of them (d) two
3. 3.🧪 The first prototype held 150 g. After the team improved it, the new prototype held 340 g. How many more grams did it hold?
4. 4.🧪 The first prototype held 70 g. After the team improved it, the new prototype held 200 g. How many more grams did it hold?
5. 5.True or false: to use the same load is poor testing. (a) False (b) True
6. 6.🧪 Is it good or poor testing to test it only once? (a) good testing (b) poor testing
7. 7.🧪 Three prototype bridges were tested with the same method. Design A held 230 g, design B held 180 g and design C held 280 g. Which design was the weakest? (a) design B (b) design A (c) design C
8. 8.🧪 Is it good or poor testing to change only one thing? (a) good testing (b) poor testing
9. 9.🔢 To build and test a straw bridge, what comes right after “load it with coins”? (a) strengthen the weak part (b) choose and draw one (c) build it with straws (d) sketch three ideas
10. 10.True or false: to record every result is poor testing. (a) False (b) True
11. 11.🧪 Three prototype bridges were tested with the same method. Design A held 240 g, design B held 290 g and design C held 190 g. Which design was the strongest? (a) design C (b) design B (c) design A
12. 12.🧪 A paper bridge was tested three times. It held 440 g, 350 g and 260 g. What is the mean (average) load it held, in grams?
13. 13.🔍 Which is the odd one out? (a) guess, do not measure (b) change lots at once (c) use a new load each time (d) change only one thing
14. 14.True or false: to change lots at once is poor testing. (a) True (b) False
15. 15.🔍 Which is the odd one out? (a) record every result (b) change lots at once (c) use the same load (d) measure the same way
16. 16.🧪 Is it good or poor testing to measure the same way? (a) poor testing (b) good testing
17. 17.🧪 What is a prototype? (a) the final product (b) an early test model (c) a sales poster (d) a broken part
18. 18.🧪 A paper bridge was tested three times. It held 180 g, 80 g and 250 g. What is the mean (average) load it held, in grams?
19. 19.🧪 The first prototype held 280 g. After the team improved it, the new prototype held 470 g. How many more grams did it hold?
20. 20.🔢 To build and test a straw bridge, what comes right after “choose and draw one”? (a) strengthen the weak part (b) build it with straws (c) read the challenge rules (d) load it with coins
21. 21.🧪 Is it good or poor testing to guess, do not measure? (a) good testing (b) poor testing
22. 22.🧪 Three prototype bridges were tested with the same method. Design A held 260 g, design B held 360 g and design C held 310 g. Which design was the weakest? (a) design C (b) design B (c) design A
23. 23.🧪 The first prototype held 140 g. After the team improved it, the new prototype held 150 g. How many more grams did it hold?
24. 24.🧪 Is it good or poor testing to hide a failed test? (a) good testing (b) poor testing
25. 25.🧪 Three prototype bridges were tested with the same method. Design A held 230 g, design B held 180 g and design C held 130 g. Which design was the weakest? (a) design A (b) design C (c) design B
26. 26.🧪 Is it good or poor testing to change lots at once? (a) poor testing (b) good testing
27. 27.🧪 A paper bridge was tested three times. It held 300 g, 190 g and 350 g. What is the mean (average) load it held, in grams?
28. 28.🔍 Which is the odd one out? (a) test it only once (b) record every result (c) change only one thing (d) use the same load
29. 29.🧪 Three prototype bridges were tested with the same method. Design A held 190 g, design B held 240 g and design C held 290 g. Which design was the weakest? (a) design B (b) design C (c) design A
30. 30.True or false: to guess, do not measure is good testing. (a) False (b) True
31. 31.🧪 A paper bridge was tested three times. It held 160 g, 120 g and 170 g. What is the mean (average) load it held, in grams?
32. 32.🧪 The first prototype held 170 g. After the team improved it, the new prototype held 210 g. How many more grams did it hold?
33. 33.🧪 The first prototype held 210 g. After the team improved it, the new prototype held 330 g. How many more grams did it hold?
34. 34.🔢 To build and test a straw bridge, which comes first: “sketch three ideas” or “build it with straws”? (a) sketch three ideas (b) build it with straws
35. 35.🧪 The first prototype held 160 g. After the team improved it, the new prototype held 350 g. How many more grams did it hold?
36. 36.🧪 Why repeat a test three times? (a) to use more paper (b) to get reliable results (c) it looks busy (d) the first is wrong
37. 37.🧪 Is it good or poor testing to record every result? (a) poor testing (b) good testing
38. 38.🧪 The first prototype held 140 g. After the team improved it, the new prototype held 220 g. How many more grams did it hold?
39. 39.🧪 A paper bridge was tested three times. It held 320 g, 230 g and 320 g. What is the mean (average) load it held, in grams?
40. 40.🔢 To build and test a straw bridge, what comes right after “build it with straws”? (a) choose and draw one (b) read the challenge rules (c) strengthen the weak part (d) load it with coins

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