Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 410 · 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 test it only once is poor testing. (a) False (b) True
2. 2.🧪 The first prototype held 130 g. After the team improved it, the new prototype held 330 g. How many more grams did it hold?
3. 3.🔍 Which is the odd one out? (a) guess, do not measure (b) measure the same way (c) skip writing results (d) test it only once
4. 4.🔢 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
5. 5.🔍 Which is the odd one out? (a) record every result (b) use the same load (c) measure the same way (d) change lots at once
6. 6.🧪 Why repeat a test three times? (a) the first is wrong (b) to get reliable results (c) it looks busy (d) to use more paper
7. 7.True or false: to change lots at once is good testing. (a) True (b) False
8. 8.🔢 To build and test a straw bridge, which comes first: “strengthen the weak part” or “sketch three ideas”? (a) strengthen the weak part (b) sketch three ideas
9. 9.True or false: to skip writing results is good testing. (a) True (b) False
10. 10.🧪 In a fair test, how many things do you change at a time? (a) two (b) none (c) all of them (d) one
11. 11.🧪 Is it good or poor testing to guess, do not measure? (a) good testing (b) poor testing
12. 12.🧪 What is a prototype? (a) a sales poster (b) an early test model (c) a broken part (d) the final product
13. 13.🔢 To build and test a straw bridge, which is the LAST step? (a) choose and draw one (b) build it with straws (c) strengthen the weak part (d) read the challenge rules
14. 14.🧪 Is it good or poor testing to change only one thing? (a) poor testing (b) good testing
15. 15.🔢 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
16. 16.🧪 Three prototype bridges were tested with the same method. Design A held 150 g, design B held 250 g and design C held 200 g. Which design was the strongest? (a) design A (b) design B (c) design C
17. 17.🔢 To build and test a straw bridge, what comes right after “build it with straws”? (a) sketch three ideas (b) strengthen the weak part (c) choose and draw one (d) load it with coins
18. 18.🔍 Which is the odd one out? (a) test it only once (b) guess, do not measure (c) use the same load (d) use a new load each time
19. 19.🔍 Which is the odd one out? (a) repeat each test (b) hide a failed test (c) measure the same way (d) change only one thing
20. 20.🧪 A paper bridge was tested three times. It held 190 g, 90 g and 290 g. What is the mean (average) load it held, in grams?
21. 21.🧪 A paper bridge was tested three times. It held 270 g, 160 g and 110 g. What is the mean (average) load it held, in grams?
22. 22.🔢 To build and test a straw bridge, which is the FIRST step? (a) choose and draw one (b) sketch three ideas (c) load it with coins (d) read the challenge rules
23. 23.🧪 Is it good or poor testing to measure the same way? (a) poor testing (b) good testing
24. 24.🧪 Is it good or poor testing to hide a failed test? (a) poor testing (b) good testing
25. 25.True or false: to hide a failed test is poor testing. (a) False (b) True
26. 26.🧪 The first prototype held 300 g. After the team improved it, the new prototype held 370 g. How many more grams did it hold?
27. 27.True or false: to use the same load is good testing. (a) True (b) False
28. 28.🧪 Three prototype bridges were tested with the same method. Design A held 280 g, design B held 330 g and design C held 230 g. Which design was the strongest? (a) design C (b) design A (c) design B
29. 29.🔢 To build and test a straw bridge, which comes first: “read the challenge rules” or “strengthen the weak part”? (a) strengthen the weak part (b) read the challenge rules
30. 30.🧪 Is it good or poor testing to use a new load each time? (a) good testing (b) poor testing
31. 31.🔍 Which is the odd one out? (a) test it only once (b) use the same load (c) record every result (d) measure the same way
32. 32.🧪 Three prototype bridges were tested with the same method. Design A held 220 g, design B held 170 g and design C held 120 g. Which design was the weakest? (a) design B (b) design A (c) design C
33. 33.🧪 Three prototype bridges were tested with the same method. Design A held 170 g, design B held 120 g and design C held 220 g. Which design was the weakest? (a) design C (b) design A (c) design B
34. 34.🧪 The first prototype held 160 g. After the team improved it, the new prototype held 310 g. How many more grams did it hold?
35. 35.🧪 A paper bridge was tested three times. It held 310 g, 240 g and 320 g. What is the mean (average) load it held, in grams?
36. 36.🔢 To build and test a straw bridge, what comes right after “load it with coins”? (a) sketch three ideas (b) read the challenge rules (c) build it with straws (d) strengthen the weak part
37. 37.🧪 A paper bridge was tested three times. It held 450 g, 300 g and 300 g. What is the mean (average) load it held, in grams?
38. 38.🧪 Three prototype bridges were tested with the same method. Design A held 150 g, design B held 100 g and design C held 200 g. Which design was the weakest? (a) design A (b) design B (c) design C
39. 39.🧪 A paper bridge was tested three times. It held 160 g, 90 g and 200 g. What is the mean (average) load it held, in grams?
40. 40.🧪 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

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