Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 211 · 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.🧪 Is it good or poor testing to change only one thing? (a) good testing (b) poor testing
2. 2.🧪 In a fair test, how many things do you change at a time? (a) two (b) one (c) all of them (d) none
3. 3.True or false: to hide a failed test is poor testing. (a) True (b) False
4. 4.🧪 What is a prototype? (a) a broken part (b) the final product (c) an early test model (d) a sales poster
5. 5.🧪 Is it good or poor testing to skip writing results? (a) good testing (b) poor testing
6. 6.True or false: to change lots at once is good testing. (a) True (b) False
7. 7.🧪 A paper bridge was tested three times. It held 150 g, 80 g and 220 g. What is the mean (average) load it held, in grams?
8. 8.🔍 Which is the odd one out? (a) repeat each test (b) record every result (c) hide a failed test (d) measure the same way
9. 9.🔍 Which is the odd one out? (a) skip writing results (b) use the same load (c) hide a failed test (d) change lots at once
10. 10.True or false: to guess, do not measure is poor testing. (a) True (b) False
11. 11.🔢 To build and test a straw bridge, what comes right after “build it with straws”? (a) sketch three ideas (b) load it with coins (c) strengthen the weak part (d) read the challenge rules
12. 12.True or false: to repeat each test is good testing. (a) False (b) True
13. 13.🔍 Which is the odd one out? (a) use a new load each time (b) change only one thing (c) repeat each test (d) record every result
14. 14.🧪 Is it good or poor testing to hide a failed test? (a) good testing (b) poor testing
15. 15.True or false: to skip writing results is good testing. (a) True (b) False
16. 16.🧪 Why repeat a test three times? (a) to use more paper (b) to get reliable results (c) the first is wrong (d) it looks busy
17. 17.🧪 The first prototype held 130 g. After the team improved it, the new prototype held 190 g. How many more grams did it hold?
18. 18.🧪 Is it good or poor testing to measure the same way? (a) poor testing (b) good testing
19. 19.🧪 A paper bridge was tested three times. It held 230 g, 120 g and 160 g. What is the mean (average) load it held, in grams?
20. 20.True or false: to use the same load is good testing. (a) True (b) False
21. 21.🧪 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
22. 22.🧪 The first prototype held 110 g. After the team improved it, the new prototype held 240 g. How many more grams did it hold?
23. 23.🧪 A paper bridge was tested three times. It held 350 g, 200 g and 260 g. What is the mean (average) load it held, in grams?
24. 24.🔢 To build and test a straw bridge, which is the FIRST step? (a) read the challenge rules (b) build it with straws (c) strengthen the weak part (d) sketch three ideas
25. 25.🔢 To build and test a straw bridge, what comes right after “load it with coins”? (a) sketch three ideas (b) choose and draw one (c) strengthen the weak part (d) build it with straws
26. 26.🧪 A paper bridge was tested three times. It held 300 g, 190 g and 380 g. What is the mean (average) load it held, in grams?
27. 27.🧪 The first prototype held 220 g. After the team improved it, the new prototype held 360 g. How many more grams did it hold?
28. 28.🧪 The first prototype held 290 g. After the team improved it, the new prototype held 470 g. How many more grams did it hold?
29. 29.🧪 Three prototype bridges were tested with the same method. Design A held 290 g, design B held 340 g and design C held 390 g. Which design was the weakest? (a) design C (b) design A (c) design B
30. 30.🧪 Is it good or poor testing to test it only once? (a) good testing (b) poor testing
31. 31.🔢 To build and test a straw bridge, what comes right after “sketch three ideas”? (a) build it with straws (b) load it with coins (c) choose and draw one (d) read the challenge rules
32. 32.🧪 The first prototype held 110 g. After the team improved it, the new prototype held 160 g. How many more grams did it hold?
33. 33.True or false: to use a new load each time is good testing. (a) True (b) False
34. 34.🧪 A paper bridge was tested three times. It held 270 g, 180 g and 270 g. What is the mean (average) load it held, in grams?
35. 35.True or false: to test it only once is good testing. (a) False (b) True
36. 36.🧪 The first prototype held 170 g. After the team improved it, the new prototype held 210 g. How many more grams did it hold?
37. 37.🧪 Three prototype bridges were tested with the same method. Design A held 110 g, design B held 160 g and design C held 210 g. Which design was the weakest? (a) design B (b) design A (c) design C
38. 38.True or false: to repeat each test is poor testing. (a) True (b) False
39. 39.🔢 To build and test a straw bridge, what comes right after “choose and draw one”? (a) sketch three ideas (b) build it with straws (c) load it with coins (d) strengthen the weak part
40. 40.🧪 Three prototype bridges were tested with the same method. Design A held 310 g, design B held 260 g and design C held 360 g. Which design was the weakest? (a) design C (b) design A (c) design B

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