Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 580 · 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.🧪 Three prototype bridges were tested with the same method. Design A held 380 g, design B held 280 g and design C held 330 g. Which design was the strongest? (a) design A (b) design C (c) design B
2. 2.🧪 Three prototype bridges were tested with the same method. Design A held 170 g, design B held 270 g and design C held 220 g. Which design was the weakest? (a) design A (b) design C (c) design B
3. 3.🧪 A paper bridge was tested three times. It held 230 g, 210 g and 220 g. What is the mean (average) load it held, in grams?
4. 4.🧪 The first prototype held 130 g. After the team improved it, the new prototype held 190 g. How many more grams did it hold?
5. 5.True or false: to use a new load each time is good testing. (a) False (b) True
6. 6.🔢 To build and test a straw bridge, which comes first: “build it with straws” or “sketch three ideas”? (a) build it with straws (b) sketch three ideas
7. 7.🧪 The first prototype held 80 g. After the team improved it, the new prototype held 260 g. How many more grams did it hold?
8. 8.🧪 In a fair test, how many things do you change at a time? (a) none (b) two (c) one (d) all of them
9. 9.🔢 To build and test a straw bridge, which comes first: “choose and draw one” or “build it with straws”? (a) choose and draw one (b) build it with straws
10. 10.🧪 The first prototype held 80 g. After the team improved it, the new prototype held 100 g. How many more grams did it hold?
11. 11.🧪 The first prototype held 110 g. After the team improved it, the new prototype held 240 g. How many more grams did it hold?
12. 12.🧪 A paper bridge was tested three times. It held 280 g, 180 g and 350 g. What is the mean (average) load it held, in grams?
13. 13.🧪 A paper bridge was tested three times. It held 390 g, 240 g and 390 g. What is the mean (average) load it held, in grams?
14. 14.True or false: to test it only once is good testing. (a) True (b) False
15. 15.🧪 Is it good or poor testing to use a new load each time? (a) good testing (b) poor testing
16. 16.🧪 Is it good or poor testing to skip writing results? (a) poor testing (b) good testing
17. 17.True or false: to record every result is poor testing. (a) False (b) True
18. 18.🔍 Which is the odd one out? (a) use the same load (b) change only one thing (c) test it only once (d) record every result
19. 19.🧪 The first prototype held 240 g. After the team improved it, the new prototype held 300 g. How many more grams did it hold?
20. 20.True or false: to change lots at once is good testing. (a) True (b) False
21. 21.🧪 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
22. 22.🔢 To build and test a straw bridge, what comes right after “sketch three ideas”? (a) load it with coins (b) read the challenge rules (c) build it with straws (d) choose and draw one
23. 23.🔢 To build and test a straw bridge, which comes first: “choose and draw one” or “load it with coins”? (a) choose and draw one (b) load it with coins
24. 24.🧪 The first prototype held 150 g. After the team improved it, the new prototype held 260 g. How many more grams did it hold?
25. 25.🧪 The first prototype held 120 g. After the team improved it, the new prototype held 230 g. How many more grams did it hold?
26. 26.🧪 The first prototype held 150 g. After the team improved it, the new prototype held 160 g. How many more grams did it hold?
27. 27.🧪 Three prototype bridges were tested with the same method. Design A held 220 g, design B held 270 g and design C held 170 g. Which design was the weakest? (a) design B (b) design A (c) design C
28. 28.🔍 Which is the odd one out? (a) change only one thing (b) change lots at once (c) record every result (d) repeat each test
29. 29.True or false: to use the same load is good testing. (a) False (b) True
30. 30.True or false: to repeat each test is poor testing. (a) True (b) False
31. 31.True or false: to use the same load is poor testing. (a) True (b) False
32. 32.🔢 To build and test a straw bridge, which comes first: “load it with coins” or “strengthen the weak part”? (a) load it with coins (b) strengthen the weak part
33. 33.🧪 The first prototype held 70 g. After the team improved it, the new prototype held 240 g. How many more grams did it hold?
34. 34.🔍 Which is the odd one out? (a) hide a failed test (b) change only one thing (c) skip writing results (d) use a new load each time
35. 35.🧪 What is a prototype? (a) a broken part (b) a sales poster (c) the final product (d) an early test model
36. 36.🧪 Three prototype bridges were tested with the same method. Design A held 340 g, design B held 240 g and design C held 290 g. Which design was the weakest? (a) design B (b) design C (c) design A
37. 37.🔢 To build and test a straw bridge, which is the LAST step? (a) choose and draw one (b) strengthen the weak part (c) load it with coins (d) build it with straws
38. 38.🧪 The first prototype held 70 g. After the team improved it, the new prototype held 130 g. How many more grams did it hold?
39. 39.🧪 Is it good or poor testing to test it only once? (a) good testing (b) poor testing
40. 40.True or false: to record every result is good testing. (a) True (b) False

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