Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 427 · 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.🧪 A paper bridge was tested three times. It held 230 g, 200 g and 170 g. What is the mean (average) load it held, in grams?
2. 2.🔢 To build and test a straw bridge, which comes first: “load it with coins” or “choose and draw one”? (a) load it with coins (b) choose and draw one
3. 3.🔢 To build and test a straw bridge, which comes first: “read the challenge rules” or “load it with coins”? (a) read the challenge rules (b) load it with coins
4. 4.🧪 Is it good or poor testing to use the same load? (a) poor testing (b) good testing
5. 5.True or false: to change lots at once is poor testing. (a) True (b) False
6. 6.True or false: to hide a failed test is poor testing. (a) True (b) False
7. 7.🧪 What is a prototype? (a) a sales poster (b) an early test model (c) a broken part (d) the final product
8. 8.🔍 Which is the odd one out? (a) use the same load (b) guess, do not measure (c) change only one thing (d) record every result
9. 9.🧪 Why do engineers make prototypes? (a) to test ideas cheaply (b) to avoid testing (c) to sell them at once (d) to decorate a room
10. 10.🧪 Is it good or poor testing to use a new load each time? (a) good testing (b) poor testing
11. 11.🔍 Which is the odd one out? (a) hide a failed test (b) measure the same way (c) record every result (d) use the same load
12. 12.🧪 A paper bridge was tested three times. It held 340 g, 240 g and 290 g. What is the mean (average) load it held, in grams?
13. 13.🔢 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
14. 14.🧪 Three prototype bridges were tested with the same method. Design A held 190 g, design B held 290 g and design C held 240 g. Which design was the strongest? (a) design B (b) design C (c) design A
15. 15.🧪 Is it good or poor testing to hide a failed test? (a) poor testing (b) good testing
16. 16.🔢 To build and test a straw bridge, what comes right after “build it with straws”? (a) sketch three ideas (b) load it with coins (c) read the challenge rules (d) strengthen the weak part
17. 17.🧪 The first prototype held 80 g. After the team improved it, the new prototype held 280 g. How many more grams did it hold?
18. 18.🧪 A paper bridge was tested three times. It held 270 g, 220 g and 170 g. What is the mean (average) load it held, in grams?
19. 19.🧪 A paper bridge was tested three times. It held 220 g, 140 g and 300 g. What is the mean (average) load it held, in grams?
20. 20.🧪 Is it good or poor testing to test it only once? (a) good testing (b) poor testing
21. 21.🧪 Three prototype bridges were tested with the same method. Design A held 290 g, design B held 340 g and design C held 390 g. Which design was the strongest? (a) design A (b) design B (c) design C
22. 22.🧪 In a fair test, how many things do you change at a time? (a) one (b) all of them (c) none (d) two
23. 23.🧪 Three prototype bridges were tested with the same method. Design A held 210 g, design B held 310 g and design C held 260 g. Which design was the weakest? (a) design C (b) design B (c) design A
24. 24.True or false: to hide a failed test is good testing. (a) True (b) False
25. 25.🧪 Is it good or poor testing to change only one thing? (a) good testing (b) poor testing
26. 26.🔢 To build and test a straw bridge, which is the FIRST step? (a) choose and draw one (b) build it with straws (c) load it with coins (d) read the challenge rules
27. 27.🔍 Which is the odd one out? (a) test it only once (b) record every result (c) use a new load each time (d) change lots at once
28. 28.🧪 Is it good or poor testing to record every result? (a) poor testing (b) good testing
29. 29.🧪 Three prototype bridges were tested with the same method. Design A held 350 g, design B held 300 g and design C held 400 g. Which design was the strongest? (a) design A (b) design C (c) design B
30. 30.🧪 Three prototype bridges were tested with the same method. Design A held 320 g, design B held 270 g and design C held 220 g. Which design was the weakest? (a) design A (b) design B (c) design C
31. 31.🔍 Which is the odd one out? (a) change lots at once (b) use a new load each time (c) measure the same way (d) hide a failed test
32. 32.🧪 A paper bridge was tested three times. It held 270 g, 80 g and 190 g. What is the mean (average) load it held, in grams?
33. 33.🧪 Why repeat a test three times? (a) to use more paper (b) the first is wrong (c) it looks busy (d) to get reliable results
34. 34.True or false: to guess, do not measure is good testing. (a) True (b) False
35. 35.🧪 Is it good or poor testing to skip writing results? (a) poor testing (b) good testing
36. 36.🧪 A paper bridge was tested three times. It held 260 g, 240 g and 220 g. What is the mean (average) load it held, in grams?
37. 37.🧪 Three prototype bridges were tested with the same method. Design A held 260 g, design B held 210 g and design C held 160 g. Which design was the weakest? (a) design A (b) design B (c) design C
38. 38.🧪 A paper bridge was tested three times. It held 230 g, 130 g and 180 g. What is the mean (average) load it held, in grams?
39. 39.🧪 The first prototype held 90 g. After the team improved it, the new prototype held 230 g. How many more grams did it hold?
40. 40.🧪 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 strongest? (a) design B (b) design C (c) design A

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