Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 268 · 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 180 g, design B held 130 g and design C held 230 g. Which design was the weakest? (a) design B (b) design A (c) design C
2. 2.🔍 Which is the odd one out? (a) repeat each test (b) record every result (c) change only one thing (d) guess, do not measure
3. 3.True or false: to guess, do not measure is good testing. (a) True (b) False
4. 4.🔍 Which is the odd one out? (a) record every result (b) change only one thing (c) repeat each test (d) skip writing results
5. 5.True or false: to use the same load is good testing. (a) False (b) True
6. 6.🧪 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 A (b) design B (c) design C
7. 7.🧪 Is it good or poor testing to use a new load each time? (a) good testing (b) poor testing
8. 8.🧪 A paper bridge was tested three times. It held 240 g, 190 g and 290 g. What is the mean (average) load it held, in grams?
9. 9.🔢 To build and test a straw bridge, which comes first: “sketch three ideas” or “read the challenge rules”? (a) read the challenge rules (b) sketch three ideas
10. 10.🧪 What is a prototype? (a) a sales poster (b) an early test model (c) the final product (d) a broken part
11. 11.🧪 Why do engineers make prototypes? (a) to test ideas cheaply (b) to avoid testing (c) to sell them at once (d) to decorate a room
12. 12.🧪 In a fair test, how many things do you change at a time? (a) two (b) one (c) none (d) all of them
13. 13.🧪 The first prototype held 200 g. After the team improved it, the new prototype held 300 g. How many more grams did it hold?
14. 14.True or false: to skip writing results is poor testing. (a) True (b) False
15. 15.True or false: to measure the same way is good testing. (a) True (b) False
16. 16.🔢 To build and test a straw bridge, which comes first: “choose and draw one” or “sketch three ideas”? (a) choose and draw one (b) sketch three ideas
17. 17.🔢 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
18. 18.🧪 Is it good or poor testing to guess, do not measure? (a) good testing (b) poor testing
19. 19.🧪 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
20. 20.🧪 A paper bridge was tested three times. It held 300 g, 150 g and 240 g. What is the mean (average) load it held, in grams?
21. 21.🧪 The first prototype held 240 g. After the team improved it, the new prototype held 350 g. How many more grams did it hold?
22. 22.🧪 Three prototype bridges were tested with the same method. Design A held 300 g, design B held 250 g and design C held 200 g. Which design was the strongest? (a) design B (b) design C (c) design A
23. 23.🧪 A paper bridge was tested three times. It held 360 g, 240 g and 300 g. What is the mean (average) load it held, in grams?
24. 24.🧪 Is it good or poor testing to skip writing results? (a) poor testing (b) good testing
25. 25.True or false: to test it only once is good testing. (a) True (b) False
26. 26.True or false: to use a new load each time is poor testing. (a) True (b) False
27. 27.🧪 A paper bridge was tested three times. It held 280 g, 120 g and 260 g. What is the mean (average) load it held, in grams?
28. 28.🧪 The first prototype held 100 g. After the team improved it, the new prototype held 260 g. How many more grams did it hold?
29. 29.🧪 Is it good or poor testing to change only one thing? (a) good testing (b) poor testing
30. 30.🧪 A paper bridge was tested three times. It held 150 g, 130 g and 170 g. What is the mean (average) load it held, in grams?
31. 31.True or false: to change only one thing is good testing. (a) True (b) False
32. 32.🧪 The first prototype held 110 g. After the team improved it, the new prototype held 140 g. How many more grams did it hold?
33. 33.🧪 Three prototype bridges were tested with the same method. Design A held 230 g, design B held 180 g and design C held 280 g. Which design was the strongest? (a) design B (b) design C (c) design A
34. 34.🧪 Three prototype bridges were tested with the same method. Design A held 290 g, design B held 240 g and design C held 340 g. Which design was the weakest? (a) design C (b) design A (c) design B
35. 35.🧪 Three prototype bridges were tested with the same method. Design A held 240 g, design B held 290 g and design C held 190 g. Which design was the strongest? (a) design A (b) design B (c) design C
36. 36.🔢 To build and test a straw bridge, what comes right after “load it with coins”? (a) read the challenge rules (b) choose and draw one (c) build it with straws (d) strengthen the weak part
37. 37.🔢 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
38. 38.🔍 Which is the odd one out? (a) repeat each test (b) record every result (c) use a new load each time (d) use the same load
39. 39.🧪 Is it good or poor testing to measure the same way? (a) poor testing (b) good testing
40. 40.True or false: to hide a failed test is good testing. (a) False (b) True

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