Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 721 · 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 160 g. After the team improved it, the new prototype held 230 g. How many more grams did it hold?
2. 2.🧪 Why do engineers make prototypes? (a) to avoid testing (b) to test ideas cheaply (c) to decorate a room (d) to sell them at once
3. 3.🧪 A paper bridge was tested three times. It held 340 g, 230 g and 240 g. What is the mean (average) load it held, in grams?
4. 4.🧪 Why repeat a test three times? (a) to get reliable results (b) it looks busy (c) to use more paper (d) the first is wrong
5. 5.🧪 Is it good or poor testing to hide a failed test? (a) good testing (b) poor testing
6. 6.🧪 The first prototype held 220 g. After the team improved it, the new prototype held 330 g. How many more grams did it hold?
7. 7.🧪 Is it good or poor testing to measure the same way? (a) poor testing (b) good testing
8. 8.🧪 Is it good or poor testing to change only one thing? (a) poor testing (b) good testing
9. 9.🧪 The first prototype held 180 g. After the team improved it, the new prototype held 260 g. How many more grams did it hold?
10. 10.🧪 What is a prototype? (a) the final product (b) a broken part (c) a sales poster (d) an early test model
11. 11.🧪 Is it good or poor testing to repeat each test? (a) poor testing (b) good testing
12. 12.🔢 To build and test a straw bridge, which comes first: “strengthen the weak part” or “choose and draw one”? (a) strengthen the weak part (b) choose and draw one
13. 13.🧪 A paper bridge was tested three times. It held 160 g, 70 g and 250 g. What is the mean (average) load it held, in grams?
14. 14.🔍 Which is the odd one out? (a) repeat each test (b) hide a failed test (c) guess, do not measure (d) skip writing results
15. 15.🧪 The first prototype held 240 g. After the team improved it, the new prototype held 420 g. How many more grams did it hold?
16. 16.🔢 To build and test a straw bridge, what comes right after “load it with coins”? (a) choose and draw one (b) build it with straws (c) read the challenge rules (d) strengthen the weak part
17. 17.🧪 Is it good or poor testing to skip writing results? (a) good testing (b) poor testing
18. 18.🔍 Which is the odd one out? (a) use the same load (b) record every result (c) guess, do not measure (d) change only one thing
19. 19.🧪 Is it good or poor testing to use a new load each time? (a) poor testing (b) good testing
20. 20.🔢 To build and test a straw bridge, which comes first: “read the challenge rules” or “build it with straws”? (a) read the challenge rules (b) build it with straws
21. 21.🧪 A paper bridge was tested three times. It held 300 g, 160 g and 260 g. What is the mean (average) load it held, in grams?
22. 22.True or false: to change lots at once is poor testing. (a) False (b) True
23. 23.🧪 A paper bridge was tested three times. It held 380 g, 320 g and 350 g. What is the mean (average) load it held, in grams?
24. 24.🔍 Which is the odd one out? (a) repeat each test (b) measure the same way (c) record every result (d) test it only once
25. 25.🔢 To build and test a straw bridge, which is the FIRST step? (a) sketch three ideas (b) choose and draw one (c) read the challenge rules (d) build it with straws
26. 26.🧪 The first prototype held 80 g. After the team improved it, the new prototype held 180 g. How many more grams did it hold?
27. 27.🔢 To build and test a straw bridge, which comes first: “strengthen the weak part” or “read the challenge rules”? (a) strengthen the weak part (b) read the challenge rules
28. 28.🧪 The first prototype held 290 g. After the team improved it, the new prototype held 390 g. How many more grams did it hold?
29. 29.True or false: to change only one thing is poor testing. (a) True (b) False
30. 30.🔍 Which is the odd one out? (a) use a new load each time (b) record every result (c) change only one thing (d) use the same load
31. 31.🧪 Is it good or poor testing to record every result? (a) poor testing (b) good testing
32. 32.🧪 A paper bridge was tested three times. It held 280 g, 150 g and 140 g. What is the mean (average) load it held, in grams?
33. 33.🧪 In a fair test, how many things do you change at a time? (a) all of them (b) two (c) one (d) none
34. 34.🧪 The first prototype held 50 g. After the team improved it, the new prototype held 80 g. How many more grams did it hold?
35. 35.🔢 To build and test a straw bridge, which is the LAST step? (a) sketch three ideas (b) strengthen the weak part (c) build it with straws (d) choose and draw one
36. 36.True or false: to skip writing results is poor testing. (a) False (b) True
37. 37.True or false: to guess, do not measure is poor testing. (a) True (b) False
38. 38.🧪 The first prototype held 70 g. After the team improved it, the new prototype held 120 g. How many more grams did it hold?
39. 39.🧪 A paper bridge was tested three times. It held 220 g, 210 g and 200 g. What is the mean (average) load it held, in grams?
40. 40.🔍 Which is the odd one out? (a) change only one thing (b) hide a failed test (c) use the same load (d) measure the same way

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