Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 227 · 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.🔍 Which is the odd one out? (a) guess, do not measure (b) use a new load each time (c) use the same load (d) test it only once
2. 2.🔍 Which is the odd one out? (a) hide a failed test (b) use the same load (c) repeat each test (d) measure the same way
3. 3.🧪 Why do engineers make prototypes? (a) to decorate a room (b) to avoid testing (c) to test ideas cheaply (d) to sell them at once
4. 4.🧪 The first prototype held 70 g. After the team improved it, the new prototype held 180 g. How many more grams did it hold?
5. 5.🧪 What is a prototype? (a) a sales poster (b) the final product (c) an early test model (d) a broken part
6. 6.🧪 Is it good or poor testing to guess, do not measure? (a) poor testing (b) good testing
7. 7.🧪 Is it good or poor testing to repeat each test? (a) poor testing (b) good testing
8. 8.🧪 Is it good or poor testing to use a new load each time? (a) good testing (b) poor testing
9. 9.🧪 In a fair test, how many things do you change at a time? (a) none (b) two (c) all of them (d) one
10. 10.True or false: to guess, do not measure is poor testing. (a) True (b) False
11. 11.🔢 To build and test a straw bridge, which is the LAST step? (a) build it with straws (b) strengthen the weak part (c) load it with coins (d) read the challenge rules
12. 12.🔍 Which is the odd one out? (a) test it only once (b) skip writing results (c) measure the same way (d) use a new load each time
13. 13.🧪 A paper bridge was tested three times. It held 410 g, 230 g and 350 g. What is the mean (average) load it held, in grams?
14. 14.🔢 To build and test a straw bridge, which comes first: “sketch three ideas” or “read the challenge rules”? (a) read the challenge rules (b) sketch three ideas
15. 15.🧪 Why repeat a test three times? (a) to use more paper (b) the first is wrong (c) it looks busy (d) to get reliable results
16. 16.🧪 A paper bridge was tested three times. It held 260 g, 250 g and 240 g. What is the mean (average) load it held, in grams?
17. 17.🧪 Is it good or poor testing to change only one thing? (a) good testing (b) poor testing
18. 18.🧪 The first prototype held 190 g. After the team improved it, the new prototype held 310 g. How many more grams did it hold?
19. 19.🔍 Which is the odd one out? (a) change only one thing (b) record every result (c) use the same load (d) skip writing results
20. 20.True or false: to record every result is good testing. (a) True (b) False
21. 21.True or false: to test it only once is poor testing. (a) True (b) False
22. 22.True or false: to change only one thing is poor testing. (a) False (b) True
23. 23.True or false: to repeat each test is poor testing. (a) True (b) False
24. 24.True or false: to measure the same way is good testing. (a) False (b) True
25. 25.🧪 The first prototype held 70 g. After the team improved it, the new prototype held 120 g. How many more grams did it hold?
26. 26.🔢 To build and test a straw bridge, what comes right after “sketch three ideas”? (a) strengthen the weak part (b) choose and draw one (c) read the challenge rules (d) load it with coins
27. 27.🧪 The first prototype held 120 g. After the team improved it, the new prototype held 140 g. How many more grams did it hold?
28. 28.🧪 Is it good or poor testing to skip writing results? (a) good testing (b) poor testing
29. 29.🧪 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 B (b) design C (c) design A
30. 30.🧪 The first prototype held 250 g. After the team improved it, the new prototype held 380 g. How many more grams did it hold?
31. 31.🔢 To build and test a straw bridge, which is the FIRST step? (a) read the challenge rules (b) sketch three ideas (c) build it with straws (d) strengthen the weak part
32. 32.🧪 Is it good or poor testing to record every result? (a) poor testing (b) good testing
33. 33.🧪 The first prototype held 60 g. After the team improved it, the new prototype held 140 g. How many more grams did it hold?
34. 34.🧪 A paper bridge was tested three times. It held 200 g, 70 g and 240 g. What is the mean (average) load it held, in grams?
35. 35.🧪 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 strongest? (a) design A (b) design C (c) design B
36. 36.True or false: to skip writing results is good testing. (a) True (b) False
37. 37.🔢 To build and test a straw bridge, what comes right after “load it with coins”? (a) choose and draw one (b) strengthen the weak part (c) read the challenge rules (d) sketch three ideas
38. 38.🧪 Three prototype bridges were tested with the same method. Design A held 280 g, design B held 330 g and design C held 380 g. Which design was the weakest? (a) design A (b) design C (c) design B
39. 39.🔢 To build and test a straw bridge, which comes first: “read the challenge rules” or “build it with straws”? (a) build it with straws (b) read the challenge rules
40. 40.True or false: to use a new load each time is poor testing. (a) False (b) True

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