Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 918 · 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 repeat each test is good testing. (a) True (b) False
2. 2.🧪 In a fair test, how many things do you change at a time? (a) none (b) all of them (c) two (d) one
3. 3.🧪 Is it good or poor testing to use a new load each time? (a) poor testing (b) good testing
4. 4.True or false: to test it only once is good testing. (a) True (b) False
5. 5.🧪 The first prototype held 60 g. After the team improved it, the new prototype held 190 g. How many more grams did it hold?
6. 6.🔢 To build and test a straw bridge, which comes first: “choose and draw one” or “build it with straws”? (a) build it with straws (b) choose and draw one
7. 7.🧪 Is it good or poor testing to measure the same way? (a) poor testing (b) good testing
8. 8.🔍 Which is the odd one out? (a) skip writing results (b) change only one thing (c) test it only once (d) change lots at once
9. 9.🧪 Is it good or poor testing to guess, do not measure? (a) poor testing (b) good testing
10. 10.🧪 Why do engineers make prototypes? (a) to avoid testing (b) to test ideas cheaply (c) to sell them at once (d) to decorate a room
11. 11.🧪 Why repeat a test three times? (a) the first is wrong (b) it looks busy (c) to get reliable results (d) to use more paper
12. 12.🔍 Which is the odd one out? (a) change only one thing (b) measure the same way (c) use the same load (d) test it only once
13. 13.🧪 The first prototype held 110 g. After the team improved it, the new prototype held 220 g. How many more grams did it hold?
14. 14.🔢 To build and test a straw bridge, which comes first: “choose and draw one” or “read the challenge rules”? (a) choose and draw one (b) read the challenge rules
15. 15.🧪 What is a prototype? (a) an early test model (b) the final product (c) a broken part (d) a sales poster
16. 16.True or false: to record every result is poor testing. (a) True (b) False
17. 17.🔢 To build and test a straw bridge, which is the LAST step? (a) load it with coins (b) read the challenge rules (c) strengthen the weak part (d) choose and draw one
18. 18.🔢 To build and test a straw bridge, what comes right after “build it with straws”? (a) choose and draw one (b) load it with coins (c) sketch three ideas (d) read the challenge rules
19. 19.🔢 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
20. 20.True or false: to record every result is good testing. (a) False (b) True
21. 21.🔍 Which is the odd one out? (a) change lots at once (b) hide a failed test (c) test it only once (d) use the same load
22. 22.True or false: to change lots at once is good testing. (a) True (b) False
23. 23.🔢 To build and test a straw bridge, which is the FIRST step? (a) read the challenge rules (b) build it with straws (c) sketch three ideas (d) load it with coins
24. 24.🧪 A paper bridge was tested three times. It held 410 g, 270 g and 310 g. What is the mean (average) load it held, in grams?
25. 25.🧪 Is it good or poor testing to record every result? (a) poor testing (b) good testing
26. 26.True or false: to change only one thing is poor testing. (a) False (b) True
27. 27.True or false: to change only one thing is good testing. (a) False (b) True
28. 28.🧪 A paper bridge was tested three times. It held 210 g, 110 g and 130 g. What is the mean (average) load it held, in grams?
29. 29.🔍 Which is the odd one out? (a) hide a failed test (b) change lots at once (c) test it only once (d) record every result
30. 30.🧪 The first prototype held 50 g. After the team improved it, the new prototype held 60 g. How many more grams did it hold?
31. 31.🧪 Is it good or poor testing to repeat each test? (a) good testing (b) poor testing
32. 32.🔢 To build and test a straw bridge, what comes right after “choose and draw one”? (a) read the challenge rules (b) build it with straws (c) load it with coins (d) strengthen the weak part
33. 33.🧪 Three prototype bridges were tested with the same method. Design A held 300 g, design B held 250 g and design C held 350 g. Which design was the weakest? (a) design C (b) design B (c) design A
34. 34.🔍 Which is the odd one out? (a) hide a failed test (b) change only one thing (c) record every result (d) measure the same way
35. 35.🔢 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
36. 36.True or false: to measure the same way is good testing. (a) False (b) True
37. 37.🔢 To build and test a straw bridge, which comes first: “sketch three ideas” or “read the challenge rules”? (a) sketch three ideas (b) read the challenge rules
38. 38.🧪 Is it good or poor testing to change lots at once? (a) good testing (b) poor testing
39. 39.🧪 The first prototype held 80 g. After the team improved it, the new prototype held 240 g. How many more grams did it hold?
40. 40.🧪 The first prototype held 100 g. After the team improved it, the new prototype held 220 g. How many more grams did it hold?

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