Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 439 · 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.🧪 The first prototype held 200 g. After the team improved it, the new prototype held 270 g. How many more grams did it hold?
2. 2.True or false: to change only one thing is poor testing. (a) False (b) True
3. 3.🧪 The first prototype held 280 g. After the team improved it, the new prototype held 320 g. How many more grams did it hold?
4. 4.🧪 Is it good or poor testing to use a new load each time? (a) good testing (b) poor testing
5. 5.🔢 To build and test a straw bridge, what comes right after “build it with straws”? (a) read the challenge rules (b) strengthen the weak part (c) sketch three ideas (d) load it with coins
6. 6.🧪 A paper bridge was tested three times. It held 230 g, 90 g and 220 g. What is the mean (average) load it held, in grams?
7. 7.🔢 To build and test a straw bridge, which comes first: “build it with straws” or “load it with coins”? (a) build it with straws (b) load it with coins
8. 8.🧪 What is a prototype? (a) a broken part (b) the final product (c) a sales poster (d) an early test model
9. 9.True or false: to measure the same way is poor testing. (a) False (b) True
10. 10.🧪 In a fair test, how many things do you change at a time? (a) none (b) all of them (c) two (d) one
11. 11.🧪 Three prototype bridges were tested with the same method. Design A held 140 g, design B held 190 g and design C held 240 g. Which design was the strongest? (a) design A (b) design C (c) design B
12. 12.🔍 Which is the odd one out? (a) record every result (b) test it only once (c) use the same load (d) change only one thing
13. 13.True or false: to guess, do not measure is good testing. (a) False (b) True
14. 14.🧪 Is it good or poor testing to skip writing results? (a) good testing (b) poor testing
15. 15.True or false: to hide a failed test is good testing. (a) False (b) True
16. 16.🧪 Why do engineers make prototypes? (a) to decorate a room (b) to sell them at once (c) to test ideas cheaply (d) to avoid testing
17. 17.🔢 To build and test a straw bridge, what comes right after “choose and draw one”? (a) sketch three ideas (b) strengthen the weak part (c) load it with coins (d) build it with straws
18. 18.🧪 The first prototype held 260 g. After the team improved it, the new prototype held 300 g. How many more grams did it hold?
19. 19.🧪 A paper bridge was tested three times. It held 190 g, 130 g and 250 g. What is the mean (average) load it held, in grams?
20. 20.🧪 A paper bridge was tested three times. It held 340 g, 180 g and 260 g. What is the mean (average) load it held, in grams?
21. 21.🧪 The first prototype held 220 g. After the team improved it, the new prototype held 380 g. How many more grams did it hold?
22. 22.True or false: to use a new load each time is good testing. (a) True (b) False
23. 23.🧪 Three prototype bridges were tested with the same method. Design A held 280 g, design B held 380 g and design C held 330 g. Which design was the weakest? (a) design A (b) design B (c) design C
24. 24.🔢 To build and test a straw bridge, what comes right after “read the challenge rules”? (a) choose and draw one (b) build it with straws (c) sketch three ideas (d) load it with coins
25. 25.🔍 Which is the odd one out? (a) use a new load each time (b) change only one thing (c) change lots at once (d) skip writing results
26. 26.🧪 The first prototype held 220 g. After the team improved it, the new prototype held 390 g. How many more grams did it hold?
27. 27.🧪 Is it good or poor testing to change lots at once? (a) good testing (b) poor testing
28. 28.🧪 Is it good or poor testing to change only one thing? (a) good testing (b) poor testing
29. 29.🔢 To build and test a straw bridge, which comes first: “choose and draw one” or “read the challenge rules”? (a) choose and draw one (b) read the challenge rules
30. 30.🔢 To build and test a straw bridge, what comes right after “sketch three ideas”? (a) load it with coins (b) read the challenge rules (c) choose and draw one (d) strengthen the weak part
31. 31.🧪 Is it good or poor testing to record every result? (a) good testing (b) poor testing
32. 32.🧪 The first prototype held 70 g. After the team improved it, the new prototype held 230 g. How many more grams did it hold?
33. 33.🧪 Three prototype bridges were tested with the same method. Design A held 400 g, design B held 350 g and design C held 300 g. Which design was the weakest? (a) design A (b) design C (c) design B
34. 34.🔢 To build and test a straw bridge, what comes right after “load it with coins”? (a) strengthen the weak part (b) read the challenge rules (c) build it with straws (d) choose and draw one
35. 35.🧪 Why repeat a test three times? (a) the first is wrong (b) to use more paper (c) to get reliable results (d) it looks busy
36. 36.🔍 Which is the odd one out? (a) measure the same way (b) record every result (c) guess, do not measure (d) change only one thing
37. 37.🔍 Which is the odd one out? (a) hide a failed test (b) record every result (c) use a new load each time (d) skip writing results
38. 38.🧪 Is it good or poor testing to test it only once? (a) poor testing (b) good testing
39. 39.🧪 Is it good or poor testing to hide a failed test? (a) good testing (b) poor testing
40. 40.True or false: to use a new load each time is poor testing. (a) False (b) True

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