Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 112 · 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 240 g. After the team improved it, the new prototype held 270 g. How many more grams did it hold?
2. 2.🧪 Is it good or poor testing to use the same load? (a) poor testing (b) good testing
3. 3.🧪 The first prototype held 100 g. After the team improved it, the new prototype held 210 g. How many more grams did it hold?
4. 4.True or false: to measure the same way is good testing. (a) False (b) True
5. 5.🧪 The first prototype held 90 g. After the team improved it, the new prototype held 220 g. How many more grams did it hold?
6. 6.🔍 Which is the odd one out? (a) record every result (b) change only one thing (c) measure the same way (d) use a new load each time
7. 7.🔢 To build and test a straw bridge, which comes first: “sketch three ideas” or “choose and draw one”? (a) choose and draw one (b) sketch three ideas
8. 8.🔍 Which is the odd one out? (a) guess, do not measure (b) hide a failed test (c) use a new load each time (d) record every result
9. 9.🔍 Which is the odd one out? (a) hide a failed test (b) skip writing results (c) measure the same way (d) change lots at once
10. 10.🧪 A paper bridge was tested three times. It held 280 g, 250 g and 250 g. What is the mean (average) load it held, in grams?
11. 11.🧪 In a fair test, how many things do you change at a time? (a) one (b) two (c) all of them (d) none
12. 12.🔢 To build and test a straw bridge, which is the LAST step? (a) read the challenge rules (b) choose and draw one (c) strengthen the weak part (d) load it with coins
13. 13.True or false: to measure the same way is poor testing. (a) False (b) True
14. 14.True or false: to use a new load each time is poor testing. (a) False (b) True
15. 15.🧪 Why do engineers make prototypes? (a) to sell them at once (b) to avoid testing (c) to decorate a room (d) to test ideas cheaply
16. 16.🔍 Which is the odd one out? (a) measure the same way (b) repeat each test (c) test it only once (d) use the same load
17. 17.True or false: to guess, do not measure is good testing. (a) True (b) False
18. 18.🧪 The first prototype held 260 g. After the team improved it, the new prototype held 310 g. How many more grams did it hold?
19. 19.🧪 Is it good or poor testing to measure the same way? (a) good testing (b) poor testing
20. 20.🧪 A paper bridge was tested three times. It held 270 g, 130 g and 260 g. What is the mean (average) load it held, in grams?
21. 21.🧪 Three prototype bridges were tested with the same method. Design A held 220 g, design B held 270 g and design C held 170 g. Which design was the strongest? (a) design A (b) design C (c) design B
22. 22.🧪 The first prototype held 50 g. After the team improved it, the new prototype held 240 g. How many more grams did it hold?
23. 23.🧪 Is it good or poor testing to record every result? (a) good testing (b) poor testing
24. 24.🔢 To build and test a straw bridge, what comes right after “choose and draw one”? (a) read the challenge rules (b) load it with coins (c) build it with straws (d) sketch three ideas
25. 25.🔢 To build and test a straw bridge, what comes right after “read the challenge rules”? (a) build it with straws (b) load it with coins (c) sketch three ideas (d) choose and draw one
26. 26.🧪 Is it good or poor testing to guess, do not measure? (a) poor testing (b) good testing
27. 27.🧪 The first prototype held 50 g. After the team improved it, the new prototype held 110 g. How many more grams did it hold?
28. 28.🧪 Is it good or poor testing to change only one thing? (a) good testing (b) poor testing
29. 29.🧪 What is a prototype? (a) the final product (b) an early test model (c) a sales poster (d) a broken part
30. 30.🔢 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
31. 31.True or false: to change only one thing is good testing. (a) True (b) False
32. 32.🔢 To build and test a straw bridge, which comes first: “load it with coins” or “strengthen the weak part”? (a) strengthen the weak part (b) load it with coins
33. 33.True or false: to use the same load is poor testing. (a) True (b) False
34. 34.🔍 Which is the odd one out? (a) record every result (b) hide a failed test (c) measure the same way (d) change only one thing
35. 35.🔢 To build and test a straw bridge, which comes first: “build it with straws” or “choose and draw one”? (a) build it with straws (b) choose and draw one
36. 36.🧪 A paper bridge was tested three times. It held 380 g, 260 g and 200 g. What is the mean (average) load it held, in grams?
37. 37.🧪 Is it good or poor testing to repeat each test? (a) good testing (b) poor testing
38. 38.🧪 The first prototype held 180 g. After the team improved it, the new prototype held 220 g. How many more grams did it hold?
39. 39.🔍 Which is the odd one out? (a) guess, do not measure (b) change only one thing (c) record every result (d) use the same load
40. 40.🧪 Three prototype bridges were tested with the same method. Design A held 150 g, design B held 200 g and design C held 100 g. Which design was the weakest? (a) design B (b) design C (c) design A

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