Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 66 · 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 380 g, 290 g and 290 g. What is the mean (average) load it held, in grams?
2. 2.🧪 What is a prototype? (a) a broken part (b) an early test model (c) a sales poster (d) the final product
3. 3.🔢 To build and test a straw bridge, which comes first: “strengthen the weak part” or “read the challenge rules”? (a) read the challenge rules (b) strengthen the weak part
4. 4.True or false: to use the same load is good testing. (a) False (b) True
5. 5.🔢 To build and test a straw bridge, which comes first: “build it with straws” or “strengthen the weak part”? (a) strengthen the weak part (b) build it with straws
6. 6.🧪 The first prototype held 240 g. After the team improved it, the new prototype held 350 g. How many more grams did it hold?
7. 7.🔍 Which is the odd one out? (a) hide a failed test (b) use a new load each time (c) guess, do not measure (d) record every result
8. 8.🧪 A paper bridge was tested three times. It held 270 g, 170 g and 340 g. What is the mean (average) load it held, in grams?
9. 9.🔍 Which is the odd one out? (a) record every result (b) use the same load (c) change only one thing (d) skip writing results
10. 10.🧪 Why do engineers make prototypes? (a) to sell them at once (b) to test ideas cheaply (c) to decorate a room (d) to avoid testing
11. 11.🧪 The first prototype held 270 g. After the team improved it, the new prototype held 300 g. How many more grams did it hold?
12. 12.🧪 Is it good or poor testing to change only one thing? (a) poor testing (b) good testing
13. 13.🧪 The first prototype held 80 g. After the team improved it, the new prototype held 120 g. How many more grams did it hold?
14. 14.🔍 Which is the odd one out? (a) test it only once (b) change lots at once (c) skip writing results (d) measure the same way
15. 15.🔢 To build and test a straw bridge, what comes right after “sketch three ideas”? (a) build it with straws (b) strengthen the weak part (c) choose and draw one (d) load it with coins
16. 16.🧪 Is it good or poor testing to test it only once? (a) poor testing (b) good testing
17. 17.🧪 A paper bridge was tested three times. It held 180 g, 120 g and 240 g. What is the mean (average) load it held, in grams?
18. 18.🧪 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 weakest? (a) design B (b) design A (c) design C
19. 19.🔢 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
20. 20.🧪 Is it good or poor testing to use a new load each time? (a) good testing (b) poor testing
21. 21.🔍 Which is the odd one out? (a) use a new load each time (b) skip writing results (c) repeat each test (d) change lots at once
22. 22.🧪 The first prototype held 160 g. After the team improved it, the new prototype held 230 g. How many more grams did it hold?
23. 23.True or false: to skip writing results is poor testing. (a) True (b) False
24. 24.🧪 Is it good or poor testing to measure the same way? (a) poor testing (b) good testing
25. 25.True or false: to measure the same way is good testing. (a) False (b) True
26. 26.🧪 Is it good or poor testing to change lots at once? (a) poor testing (b) good testing
27. 27.🔢 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) strengthen the weak part
28. 28.🧪 The first prototype held 70 g. After the team improved it, the new prototype held 170 g. How many more grams did it hold?
29. 29.🧪 A paper bridge was tested three times. It held 270 g, 150 g and 240 g. What is the mean (average) load it held, in grams?
30. 30.🧪 A paper bridge was tested three times. It held 250 g, 170 g and 180 g. What is the mean (average) load it held, in grams?
31. 31.🧪 Is it good or poor testing to hide a failed test? (a) good testing (b) poor testing
32. 32.🧪 In a fair test, how many things do you change at a time? (a) all of them (b) none (c) one (d) two
33. 33.🧪 A paper bridge was tested three times. It held 380 g, 300 g and 370 g. What is the mean (average) load it held, in grams?
34. 34.True or false: to measure the same way is poor testing. (a) False (b) True
35. 35.🧪 The first prototype held 120 g. After the team improved it, the new prototype held 250 g. How many more grams did it hold?
36. 36.🧪 Is it good or poor testing to skip writing results? (a) good testing (b) poor testing
37. 37.🧪 Three prototype bridges were tested with the same method. Design A held 350 g, design B held 300 g and design C held 250 g. Which design was the strongest? (a) design C (b) design B (c) design A
38. 38.🧪 Three prototype bridges were tested with the same method. Design A held 340 g, design B held 290 g and design C held 390 g. Which design was the strongest? (a) design A (b) design B (c) design C
39. 39.True or false: to skip writing results is good testing. (a) False (b) True
40. 40.🔢 To build and test a straw bridge, what comes right after “build it with straws”? (a) load it with coins (b) strengthen the weak part (c) choose and draw one (d) read the challenge rules

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