Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 422 · 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.🔍 Which is the odd one out? (a) skip writing results (b) test it only once (c) record every result (d) use a new load each time
2. 2.🧪 Is it good or poor testing to change lots at once? (a) good testing (b) poor testing
3. 3.True or false: to change lots at once is good testing. (a) True (b) False
4. 4.🧪 Is it good or poor testing to test it only once? (a) good testing (b) poor testing
5. 5.🧪 Three prototype bridges were tested with the same method. Design A held 290 g, design B held 390 g and design C held 340 g. Which design was the weakest? (a) design B (b) design C (c) design A
6. 6.🔍 Which is the odd one out? (a) guess, do not measure (b) skip writing results (c) repeat each test (d) change lots at once
7. 7.🔍 Which is the odd one out? (a) change only one thing (b) use the same load (c) repeat each test (d) guess, do not measure
8. 8.🧪 Why do engineers make prototypes? (a) to test ideas cheaply (b) to sell them at once (c) to decorate a room (d) to avoid testing
9. 9.🧪 A paper bridge was tested three times. It held 280 g, 150 g and 200 g. What is the mean (average) load it held, in grams?
10. 10.🧪 Is it good or poor testing to skip writing results? (a) good testing (b) poor testing
11. 11.🧪 A paper bridge was tested three times. It held 300 g, 140 g and 220 g. What is the mean (average) load it held, in grams?
12. 12.🔢 To build and test a straw bridge, which comes first: “build it with straws” or “strengthen the weak part”? (a) build it with straws (b) strengthen the weak part
13. 13.🧪 The first prototype held 120 g. After the team improved it, the new prototype held 140 g. How many more grams did it hold?
14. 14.🧪 A paper bridge was tested three times. It held 270 g, 130 g and 140 g. What is the mean (average) load it held, in grams?
15. 15.True or false: to use the same load is good testing. (a) False (b) True
16. 16.🧪 What is a prototype? (a) the final product (b) an early test model (c) a sales poster (d) a broken part
17. 17.🔢 To build and test a straw bridge, which comes first: “read the challenge rules” or “sketch three ideas”? (a) sketch three ideas (b) read the challenge rules
18. 18.🧪 Three prototype bridges were tested with the same method. Design A held 350 g, design B held 300 g and design C held 250 g. Which design was the strongest? (a) design B (b) design A (c) design C
19. 19.🧪 Three prototype bridges were tested with the same method. Design A held 100 g, design B held 200 g and design C held 150 g. Which design was the weakest? (a) design A (b) design B (c) design C
20. 20.🔢 To build and test a straw bridge, which comes first: “load it with coins” or “sketch three ideas”? (a) sketch three ideas (b) load it with coins
21. 21.🧪 The first prototype held 100 g. After the team improved it, the new prototype held 150 g. How many more grams did it hold?
22. 22.🧪 A paper bridge was tested three times. It held 290 g, 150 g and 310 g. What is the mean (average) load it held, in grams?
23. 23.True or false: to guess, do not measure is good testing. (a) False (b) True
24. 24.🧪 In a fair test, how many things do you change at a time? (a) two (b) all of them (c) one (d) none
25. 25.🧪 Is it good or poor testing to repeat each test? (a) good testing (b) poor testing
26. 26.🧪 A paper bridge was tested three times. It held 390 g, 200 g and 280 g. What is the mean (average) load it held, in grams?
27. 27.🔍 Which is the odd one out? (a) change only one thing (b) use the same load (c) skip writing results (d) repeat each test
28. 28.🔢 To build and test a straw bridge, which comes first: “load it with coins” or “build it with straws”? (a) load it with coins (b) build it with straws
29. 29.🧪 A paper bridge was tested three times. It held 210 g, 120 g and 180 g. What is the mean (average) load it held, in grams?
30. 30.🧪 Three prototype bridges were tested with the same method. Design A held 370 g, design B held 320 g and design C held 270 g. Which design was the weakest? (a) design B (b) design A (c) design C
31. 31.🧪 Is it good or poor testing to measure the same way? (a) poor testing (b) good testing
32. 32.True or false: to skip writing results is good testing. (a) True (b) False
33. 33.🧪 Three prototype bridges were tested with the same method. Design A held 190 g, design B held 140 g and design C held 240 g. Which design was the weakest? (a) design C (b) design A (c) design B
34. 34.🧪 A paper bridge was tested three times. It held 350 g, 230 g and 380 g. What is the mean (average) load it held, in grams?
35. 35.🔢 To build and test a straw bridge, what comes right after “choose and draw one”? (a) read the challenge rules (b) sketch three ideas (c) strengthen the weak part (d) build it with straws
36. 36.🧪 The first prototype held 100 g. After the team improved it, the new prototype held 170 g. How many more grams did it hold?
37. 37.🧪 A paper bridge was tested three times. It held 240 g, 160 g and 110 g. What is the mean (average) load it held, in grams?
38. 38.True or false: to measure the same way is poor testing. (a) False (b) True
39. 39.True or false: to measure the same way is good testing. (a) False (b) True
40. 40.🧪 Why repeat a test three times? (a) it looks busy (b) to use more paper (c) to get reliable results (d) the first is wrong

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