Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 738 · 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 50 g. After the team improved it, the new prototype held 250 g. How many more grams did it hold?
2. 2.🧪 The first prototype held 150 g. After the team improved it, the new prototype held 310 g. How many more grams did it hold?
3. 3.🧪 A paper bridge was tested three times. It held 230 g, 210 g and 220 g. What is the mean (average) load it held, in grams?
4. 4.🧪 Is it good or poor testing to guess, do not measure? (a) good testing (b) poor testing
5. 5.🧪 Is it good or poor testing to change only one thing? (a) poor testing (b) good testing
6. 6.🧪 What is a prototype? (a) an early test model (b) the final product (c) a sales poster (d) a broken part
7. 7.🧪 In a fair test, how many things do you change at a time? (a) one (b) two (c) all of them (d) none
8. 8.🔍 Which is the odd one out? (a) guess, do not measure (b) measure the same way (c) record every result (d) use the same load
9. 9.🧪 A paper bridge was tested three times. It held 300 g, 270 g and 330 g. What is the mean (average) load it held, in grams?
10. 10.🔢 To build and test a straw bridge, which comes first: “load it with coins” or “read the challenge rules”? (a) load it with coins (b) read the challenge rules
11. 11.🔢 To build and test a straw bridge, which comes first: “choose and draw one” or “load it with coins”? (a) load it with coins (b) choose and draw one
12. 12.🔍 Which is the odd one out? (a) record every result (b) use a new load each time (c) test it only once (d) skip writing results
13. 13.🧪 The first prototype held 220 g. After the team improved it, the new prototype held 420 g. How many more grams did it hold?
14. 14.True or false: to use a new load each time is good testing. (a) False (b) True
15. 15.🔍 Which is the odd one out? (a) use the same load (b) repeat each test (c) test it only once (d) change only one thing
16. 16.🔍 Which is the odd one out? (a) measure the same way (b) use the same load (c) change lots at once (d) change only one thing
17. 17.🧪 The first prototype held 300 g. After the team improved it, the new prototype held 460 g. How many more grams did it hold?
18. 18.🧪 The first prototype held 290 g. After the team improved it, the new prototype held 310 g. How many more grams did it hold?
19. 19.🧪 A paper bridge was tested three times. It held 210 g, 140 g and 280 g. What is the mean (average) load it held, in grams?
20. 20.True or false: to repeat each test is poor testing. (a) True (b) False
21. 21.🧪 Three prototype bridges were tested with the same method. Design A held 250 g, design B held 300 g and design C held 350 g. Which design was the strongest? (a) design A (b) design C (c) design B
22. 22.🔍 Which is the odd one out? (a) use a new load each time (b) guess, do not measure (c) repeat each test (d) hide a failed test
23. 23.🧪 Why do engineers make prototypes? (a) to sell them at once (b) to test ideas cheaply (c) to avoid testing (d) to decorate a room
24. 24.🔢 To build and test a straw bridge, which is the LAST step? (a) build it with straws (b) sketch three ideas (c) load it with coins (d) strengthen the weak part
25. 25.🧪 A paper bridge was tested three times. It held 260 g, 160 g and 300 g. What is the mean (average) load it held, in grams?
26. 26.🧪 The first prototype held 90 g. After the team improved it, the new prototype held 220 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.True or false: to measure the same way is good testing. (a) True (b) False
29. 29.True or false: to repeat each test is good testing. (a) False (b) True
30. 30.🔍 Which is the odd one out? (a) skip writing results (b) measure the same way (c) hide a failed test (d) use a new load each time
31. 31.True or false: to change only one thing is poor testing. (a) True (b) False
32. 32.True or false: to test it only once is good testing. (a) False (b) True
33. 33.🧪 A paper bridge was tested three times. It held 430 g, 240 g and 320 g. What is the mean (average) load it held, in grams?
34. 34.🔍 Which is the odd one out? (a) measure the same way (b) use a new load each time (c) change only one thing (d) repeat each test
35. 35.True or false: to hide a failed test is poor testing. (a) True (b) False
36. 36.🧪 Is it good or poor testing to use a new load each time? (a) poor testing (b) good testing
37. 37.🔢 To build and test a straw bridge, which is the FIRST step? (a) choose and draw one (b) read the challenge rules (c) sketch three ideas (d) build it with straws
38. 38.🧪 Is it good or poor testing to hide a failed test? (a) good testing (b) poor testing
39. 39.🧪 Three prototype bridges were tested with the same method. Design A held 180 g, design B held 130 g and design C held 230 g. Which design was the weakest? (a) design C (b) design B (c) design A
40. 40.🧪 Is it good or poor testing to record every result? (a) good testing (b) poor testing

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