Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 779 · 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.True or false: to change only one thing is good testing. (a) False (b) True
2. 2.🔍 Which is the odd one out? (a) guess, do not measure (b) use the same load (c) change only one thing (d) measure the same way
3. 3.🧪 Is it good or poor testing to change only one thing? (a) good testing (b) poor testing
4. 4.🧪 The first prototype held 90 g. After the team improved it, the new prototype held 270 g. How many more grams did it hold?
5. 5.🧪 A paper bridge was tested three times. It held 350 g, 300 g and 250 g. What is the mean (average) load it held, in grams?
6. 6.🧪 Three prototype bridges were tested with the same method. Design A held 280 g, design B held 180 g and design C held 230 g. Which design was the weakest? (a) design A (b) design C (c) design B
7. 7.True or false: to test it only once is poor testing. (a) True (b) False
8. 8.🔢 To build and test a straw bridge, which comes first: “sketch three ideas” or “load it with coins”? (a) load it with coins (b) sketch three ideas
9. 9.🧪 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
10. 10.🧪 What is a prototype? (a) the final product (b) an early test model (c) a broken part (d) a sales poster
11. 11.🧪 Is it good or poor testing to hide a failed test? (a) good testing (b) poor testing
12. 12.🧪 In a fair test, how many things do you change at a time? (a) none (b) one (c) two (d) all of them
13. 13.🔍 Which is the odd one out? (a) use the same load (b) test it only once (c) repeat each test (d) change only one thing
14. 14.🧪 Why repeat a test three times? (a) it looks busy (b) the first is wrong (c) to use more paper (d) to get reliable results
15. 15.🧪 Is it good or poor testing to guess, do not measure? (a) poor testing (b) good testing
16. 16.🧪 A paper bridge was tested three times. It held 390 g, 290 g and 220 g. What is the mean (average) load it held, in grams?
17. 17.🔢 To build and test a straw bridge, what comes right after “build it with straws”? (a) load it with coins (b) sketch three ideas (c) choose and draw one (d) read the challenge rules
18. 18.🧪 Is it good or poor testing to repeat each test? (a) good testing (b) poor testing
19. 19.🧪 The first prototype held 220 g. After the team improved it, the new prototype held 260 g. How many more grams did it hold?
20. 20.🧪 A paper bridge was tested three times. It held 280 g, 200 g and 150 g. What is the mean (average) load it held, in grams?
21. 21.True or false: to measure the same way is good testing. (a) False (b) True
22. 22.🧪 Is it good or poor testing to measure the same way? (a) poor testing (b) good testing
23. 23.True or false: to use the same load is poor testing. (a) True (b) False
24. 24.🧪 Is it good or poor testing to record every result? (a) good testing (b) poor testing
25. 25.🔢 To build and test a straw bridge, what comes right after “load it with coins”? (a) read the challenge rules (b) strengthen the weak part (c) sketch three ideas (d) choose and draw one
26. 26.🧪 Three prototype bridges were tested with the same method. Design A held 240 g, design B held 190 g and design C held 140 g. Which design was the strongest? (a) design C (b) design B (c) design A
27. 27.True or false: to test it only once is good testing. (a) False (b) True
28. 28.🧪 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 C (b) design B (c) design A
29. 29.🔢 To build and test a straw bridge, which is the FIRST step? (a) read the challenge rules (b) build it with straws (c) load it with coins (d) sketch three ideas
30. 30.🧪 Is it good or poor testing to skip writing results? (a) good testing (b) poor testing
31. 31.🧪 Is it good or poor testing to test it only once? (a) poor testing (b) good testing
32. 32.🧪 Three prototype bridges were tested with the same method. Design A held 400 g, design B held 300 g and design C held 350 g. Which design was the strongest? (a) design C (b) design B (c) design A
33. 33.🧪 Three prototype bridges were tested with the same method. Design A held 290 g, design B held 240 g and design C held 340 g. Which design was the weakest? (a) design C (b) design A (c) design B
34. 34.🧪 Three prototype bridges were tested with the same method. Design A held 130 g, design B held 230 g and design C held 180 g. Which design was the strongest? (a) design A (b) design B (c) design C
35. 35.🧪 The first prototype held 130 g. After the team improved it, the new prototype held 210 g. How many more grams did it hold?
36. 36.🧪 A paper bridge was tested three times. It held 380 g, 290 g and 320 g. What is the mean (average) load it held, in grams?
37. 37.🧪 A paper bridge was tested three times. It held 300 g, 300 g and 300 g. What is the mean (average) load it held, in grams?
38. 38.🔍 Which is the odd one out? (a) skip writing results (b) measure the same way (c) test it only once (d) change lots at once
39. 39.🔍 Which is the odd one out? (a) change lots at once (b) change only one thing (c) repeat each test (d) record every result
40. 40.🧪 The first prototype held 60 g. After the team improved it, the new prototype held 140 g. How many more grams did it hold?

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