Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 382 · 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.🧪 Three prototype bridges were tested with the same method. Design A held 320 g, design B held 220 g and design C held 270 g. Which design was the weakest? (a) design B (b) design C (c) design A
2. 2.True or false: to skip writing results is good testing. (a) False (b) True
3. 3.True or false: to hide a failed test is good testing. (a) True (b) False
4. 4.True or false: to use the same load is poor testing. (a) True (b) False
5. 5.🧪 A paper bridge was tested three times. It held 340 g, 190 g and 310 g. What is the mean (average) load it held, in grams?
6. 6.🔍 Which is the odd one out? (a) guess, do not measure (b) repeat each test (c) use the same load (d) record every result
7. 7.🧪 The first prototype held 240 g. After the team improved it, the new prototype held 390 g. How many more grams did it hold?
8. 8.🔍 Which is the odd one out? (a) change lots at once (b) change only one thing (c) use the same load (d) measure the same way
9. 9.🔢 To build and test a straw bridge, which comes first: “load it with coins” or “read the challenge rules”? (a) read the challenge rules (b) load it with coins
10. 10.True or false: to change lots at once is good testing. (a) False (b) True
11. 11.True or false: to guess, do not measure is good testing. (a) True (b) False
12. 12.🧪 In a fair test, how many things do you change at a time? (a) two (b) none (c) all of them (d) one
13. 13.🧪 Is it good or poor testing to hide a failed test? (a) poor testing (b) good testing
14. 14.🧪 Is it good or poor testing to record every result? (a) good testing (b) poor testing
15. 15.🧪 The first prototype held 60 g. After the team improved it, the new prototype held 130 g. How many more grams did it hold?
16. 16.🔍 Which is the odd one out? (a) hide a failed test (b) repeat each test (c) change only one thing (d) measure the same way
17. 17.🧪 A paper bridge was tested three times. It held 340 g, 240 g and 170 g. What is the mean (average) load it held, in grams?
18. 18.🔢 To build and test a straw bridge, which comes first: “load it with coins” or “build it with straws”? (a) load it with coins (b) build it with straws
19. 19.🧪 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
20. 20.🧪 Three prototype bridges were tested with the same method. Design A held 230 g, design B held 280 g and design C held 330 g. Which design was the strongest? (a) design A (b) design B (c) design C
21. 21.🔍 Which is the odd one out? (a) record every result (b) test it only once (c) change only one thing (d) measure the same way
22. 22.🧪 Three prototype bridges were tested with the same method. Design A held 240 g, design B held 290 g and design C held 340 g. Which design was the strongest? (a) design C (b) design B (c) design A
23. 23.🔍 Which is the odd one out? (a) change only one thing (b) record every result (c) repeat each test (d) use a new load each time
24. 24.🧪 Three prototype bridges were tested with the same method. Design A held 150 g, design B held 200 g and design C held 100 g. Which design was the strongest? (a) design C (b) design A (c) design B
25. 25.🔢 To build and test a straw bridge, which comes first: “sketch three ideas” or “strengthen the weak part”? (a) sketch three ideas (b) strengthen the weak part
26. 26.🔢 To build and test a straw bridge, which is the FIRST step? (a) load it with coins (b) read the challenge rules (c) sketch three ideas (d) strengthen the weak part
27. 27.🧪 Is it good or poor testing to change only one thing? (a) good testing (b) poor testing
28. 28.🔍 Which is the odd one out? (a) measure the same way (b) change only one thing (c) skip writing results (d) use the same load
29. 29.🧪 Three prototype bridges were tested with the same method. Design A held 200 g, design B held 250 g and design C held 150 g. Which design was the strongest? (a) design C (b) design B (c) design A
30. 30.🧪 Is it good or poor testing to use the same load? (a) good testing (b) poor testing
31. 31.🧪 What is a prototype? (a) a broken part (b) a sales poster (c) the final product (d) an early test model
32. 32.🧪 Is it good or poor testing to skip writing results? (a) poor testing (b) good testing
33. 33.🧪 A paper bridge was tested three times. It held 240 g, 130 g and 110 g. What is the mean (average) load it held, in grams?
34. 34.🧪 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 strongest? (a) design B (b) design C (c) design A
35. 35.🧪 The first prototype held 300 g. After the team improved it, the new prototype held 420 g. How many more grams did it hold?
36. 36.🧪 Is it good or poor testing to measure the same way? (a) good testing (b) poor testing
37. 37.True or false: to measure the same way is poor testing. (a) True (b) False
38. 38.🔢 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
39. 39.🔍 Which is the odd one out? (a) test it only once (b) change lots at once (c) use a new load each time (d) record every result
40. 40.🔢 To build and test a straw bridge, which is the LAST step? (a) read the challenge rules (b) strengthen the weak part (c) build it with straws (d) sketch three ideas

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