Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 561 · 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.🧪 What is a prototype? (a) a broken part (b) a sales poster (c) the final product (d) an early test model
2. 2.🧪 The first prototype held 140 g. After the team improved it, the new prototype held 330 g. How many more grams did it hold?
3. 3.🧪 Is it good or poor testing to record every result? (a) good testing (b) poor testing
4. 4.🧪 Is it good or poor testing to change only one thing? (a) good testing (b) poor testing
5. 5.🔢 To build and test a straw bridge, which is the FIRST step? (a) build it with straws (b) sketch three ideas (c) choose and draw one (d) read the challenge rules
6. 6.🔍 Which is the odd one out? (a) record every result (b) change lots at once (c) hide a failed test (d) skip writing results
7. 7.True or false: to repeat each test is good testing. (a) False (b) True
8. 8.🔍 Which is the odd one out? (a) measure the same way (b) use a new load each time (c) use the same load (d) record every result
9. 9.🔢 To build and test a straw bridge, what comes right after “sketch three ideas”? (a) load it with coins (b) strengthen the weak part (c) choose and draw one (d) build it with straws
10. 10.🧪 Is it good or poor testing to change lots at once? (a) poor testing (b) good testing
11. 11.🧪 Is it good or poor testing to repeat each test? (a) good testing (b) poor testing
12. 12.🔢 To build and test a straw bridge, what comes right after “choose and draw one”? (a) build it with straws (b) load it with coins (c) strengthen the weak part (d) read the challenge rules
13. 13.True or false: to test it only once is good testing. (a) False (b) True
14. 14.🧪 The first prototype held 80 g. After the team improved it, the new prototype held 200 g. How many more grams did it hold?
15. 15.True or false: to change lots at once is poor testing. (a) True (b) False
16. 16.🔢 To build and test a straw bridge, which comes first: “read the challenge rules” or “choose and draw one”? (a) choose and draw one (b) read the challenge rules
17. 17.🧪 Why do engineers make prototypes? (a) to avoid testing (b) to decorate a room (c) to test ideas cheaply (d) to sell them at once
18. 18.True or false: to measure the same way is good testing. (a) False (b) True
19. 19.🔍 Which is the odd one out? (a) measure the same way (b) record every result (c) hide a failed test (d) change only one thing
20. 20.True or false: to record every result is good testing. (a) True (b) False
21. 21.🔢 To build and test a straw bridge, what comes right after “read the challenge rules”? (a) choose and draw one (b) strengthen the weak part (c) build it with straws (d) sketch three ideas
22. 22.🔍 Which is the odd one out? (a) change lots at once (b) hide a failed test (c) use a new load each time (d) use the same load
23. 23.🧪 A paper bridge was tested three times. It held 430 g, 330 g and 230 g. What is the mean (average) load it held, in grams?
24. 24.True or false: to use a new load each time is poor testing. (a) True (b) False
25. 25.True or false: to guess, do not measure is good testing. (a) False (b) True
26. 26.🔍 Which is the odd one out? (a) hide a failed test (b) test it only once (c) change only one thing (d) use a new load each time
27. 27.🔍 Which is the odd one out? (a) record every result (b) change only one thing (c) use the same load (d) guess, do not measure
28. 28.🧪 Is it good or poor testing to use the same load? (a) poor testing (b) good testing
29. 29.🧪 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
30. 30.🧪 Is it good or poor testing to skip writing results? (a) poor testing (b) good testing
31. 31.True or false: to guess, do not measure is poor testing. (a) False (b) True
32. 32.🧪 A paper bridge was tested three times. It held 270 g, 120 g and 120 g. What is the mean (average) load it held, in grams?
33. 33.🧪 The first prototype held 260 g. After the team improved it, the new prototype held 400 g. How many more grams did it hold?
34. 34.🧪 In a fair test, how many things do you change at a time? (a) two (b) none (c) one (d) all of them
35. 35.🧪 Three prototype bridges were tested with the same method. Design A held 300 g, design B held 400 g and design C held 350 g. Which design was the weakest? (a) design B (b) design A (c) design C
36. 36.🔍 Which is the odd one out? (a) change only one thing (b) use the same load (c) measure the same way (d) skip writing results
37. 37.🔍 Which is the odd one out? (a) use the same load (b) record every result (c) test it only once (d) change only one thing
38. 38.🧪 Three prototype bridges were tested with the same method. Design A held 200 g, design B held 250 g and design C held 150 g. Which design was the weakest? (a) design B (b) design C (c) design A
39. 39.🧪 A paper bridge was tested three times. It held 300 g, 170 g and 310 g. What is the mean (average) load it held, in grams?
40. 40.🧪 Three prototype bridges were tested with the same method. Design A held 250 g, design B held 200 g and design C held 300 g. Which design was the weakest? (a) design B (b) design C (c) design A

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