Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 468 · 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 220 g, 170 g and 180 g. What is the mean (average) load it held, in grams?
2. 2.🔍 Which is the odd one out? (a) use a new load each time (b) skip writing results (c) measure the same way (d) change lots at once
3. 3.🧪 Three prototype bridges were tested with the same method. Design A held 270 g, design B held 170 g and design C held 220 g. Which design was the weakest? (a) design B (b) design A (c) design C
4. 4.🧪 The first prototype held 80 g. After the team improved it, the new prototype held 120 g. How many more grams did it hold?
5. 5.🔍 Which is the odd one out? (a) test it only once (b) use a new load each time (c) repeat each test (d) skip writing results
6. 6.🧪 Is it good or poor testing to test it only once? (a) poor testing (b) good testing
7. 7.🔍 Which is the odd one out? (a) change lots at once (b) record every result (c) measure the same way (d) change only one thing
8. 8.True or false: to measure the same way is poor testing. (a) False (b) True
9. 9.🧪 Is it good or poor testing to change only one thing? (a) poor testing (b) good testing
10. 10.🔢 To build and test a straw bridge, which is the FIRST step? (a) read the challenge rules (b) choose and draw one (c) build it with straws (d) sketch three ideas
11. 11.🔍 Which is the odd one out? (a) record every result (b) repeat each test (c) measure the same way (d) hide a failed test
12. 12.🧪 Why do engineers make prototypes? (a) to decorate a room (b) to test ideas cheaply (c) to sell them at once (d) to avoid testing
13. 13.🧪 Is it good or poor testing to skip writing results? (a) poor testing (b) good testing
14. 14.True or false: to test it only once is poor testing. (a) False (b) True
15. 15.🧪 Three prototype bridges were tested with the same method. Design A held 210 g, design B held 260 g and design C held 160 g. Which design was the weakest? (a) design A (b) design B (c) design C
16. 16.🧪 Is it good or poor testing to use the same load? (a) poor testing (b) good testing
17. 17.🧪 Is it good or poor testing to hide a failed test? (a) poor testing (b) good testing
18. 18.🧪 A paper bridge was tested three times. It held 380 g, 230 g and 230 g. What is the mean (average) load it held, in grams?
19. 19.🧪 The first prototype held 120 g. After the team improved it, the new prototype held 320 g. How many more grams did it hold?
20. 20.🧪 A paper bridge was tested three times. It held 260 g, 120 g and 100 g. What is the mean (average) load it held, in grams?
21. 21.🧪 What is a prototype? (a) an early test model (b) a broken part (c) the final product (d) a sales poster
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.🔢 To build and test a straw bridge, which comes first: “build it with straws” or “strengthen the weak part”? (a) build it with straws (b) strengthen the weak part
24. 24.🧪 A paper bridge was tested three times. It held 310 g, 230 g and 390 g. What is the mean (average) load it held, in grams?
25. 25.🧪 The first prototype held 70 g. After the team improved it, the new prototype held 90 g. How many more grams did it hold?
26. 26.🧪 Three prototype bridges were tested with the same method. Design A held 160 g, design B held 210 g and design C held 110 g. Which design was the weakest? (a) design A (b) design C (c) design B
27. 27.🧪 Three prototype bridges were tested with the same method. Design A held 270 g, design B held 320 g and design C held 370 g. Which design was the weakest? (a) design B (b) design A (c) design C
28. 28.🧪 The first prototype held 90 g. After the team improved it, the new prototype held 140 g. How many more grams did it hold?
29. 29.🔢 To build and test a straw bridge, what comes right after “read the challenge rules”? (a) build it with straws (b) strengthen the weak part (c) sketch three ideas (d) load it with coins
30. 30.🧪 Is it good or poor testing to measure the same way? (a) poor testing (b) good testing
31. 31.🔍 Which is the odd one out? (a) record every result (b) hide a failed test (c) guess, do not measure (d) change lots at once
32. 32.🔢 To build and test a straw bridge, which comes first: “choose and draw one” or “build it with straws”? (a) choose and draw one (b) build it with straws
33. 33.🧪 Is it good or poor testing to record every result? (a) good testing (b) poor testing
34. 34.True or false: to record every result is good testing. (a) False (b) True
35. 35.🧪 The first prototype held 290 g. After the team improved it, the new prototype held 370 g. How many more grams did it hold?
36. 36.🧪 Is it good or poor testing to use a new load each time? (a) poor testing (b) good testing
37. 37.True or false: to guess, do not measure is poor testing. (a) True (b) False
38. 38.🧪 The first prototype held 300 g. After the team improved it, the new prototype held 480 g. How many more grams did it hold?
39. 39.🔍 Which is the odd one out? (a) measure the same way (b) use the same load (c) skip writing results (d) record every result
40. 40.🧪 The first prototype held 180 g. After the team improved it, the new prototype held 270 g. How many more grams did it hold?

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