Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 761 · 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 140 g, design B held 240 g and design C held 190 g. Which design was the weakest? (a) design C (b) design B (c) design A
2. 2.🧪 Is it good or poor testing to change only one thing? (a) poor testing (b) good testing
3. 3.🔍 Which is the odd one out? (a) change lots at once (b) hide a failed test (c) change only one thing (d) test it only once
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.🧪 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 A (b) design C (c) design B
6. 6.🔢 To build and test a straw bridge, which comes first: “sketch three ideas” or “read the challenge rules”? (a) sketch three ideas (b) read the challenge rules
7. 7.🧪 Three prototype bridges were tested with the same method. Design A held 230 g, design B held 180 g and design C held 130 g. Which design was the strongest? (a) design C (b) design B (c) design A
8. 8.🧪 A paper bridge was tested three times. It held 400 g, 250 g and 280 g. What is the mean (average) load it held, in grams?
9. 9.🧪 Three prototype bridges were tested with the same method. Design A held 210 g, design B held 310 g and design C held 260 g. Which design was the strongest? (a) design B (b) design C (c) design A
10. 10.🧪 Three prototype bridges were tested with the same method. Design A held 210 g, design B held 160 g and design C held 110 g. Which design was the strongest? (a) design C (b) design B (c) design A
11. 11.True or false: to measure the same way is good testing. (a) True (b) False
12. 12.True or false: to repeat each test is good testing. (a) True (b) False
13. 13.🧪 The first prototype held 60 g. After the team improved it, the new prototype held 150 g. How many more grams did it hold?
14. 14.True or false: to guess, do not measure is poor testing. (a) False (b) True
15. 15.🔢 To build and test a straw bridge, which is the FIRST step? (a) sketch three ideas (b) strengthen the weak part (c) read the challenge rules (d) build it with straws
16. 16.🧪 Three prototype bridges were tested with the same method. Design A held 260 g, design B held 160 g and design C held 210 g. Which design was the strongest? (a) design B (b) design C (c) design A
17. 17.🧪 Is it good or poor testing to skip writing results? (a) poor testing (b) good testing
18. 18.🧪 A paper bridge was tested three times. It held 370 g, 230 g and 360 g. What is the mean (average) load it held, in grams?
19. 19.🔍 Which is the odd one out? (a) use the same load (b) guess, do not measure (c) measure the same way (d) change only one thing
20. 20.🧪 A paper bridge was tested three times. It held 200 g, 130 g and 270 g. What is the mean (average) load it held, in grams?
21. 21.True or false: to skip writing results is good testing. (a) True (b) False
22. 22.🧪 Why do engineers make prototypes? (a) to avoid testing (b) to decorate a room (c) to sell them at once (d) to test ideas cheaply
23. 23.🧪 The first prototype held 180 g. After the team improved it, the new prototype held 260 g. How many more grams did it hold?
24. 24.🧪 In a fair test, how many things do you change at a time? (a) two (b) none (c) all of them (d) one
25. 25.🔍 Which is the odd one out? (a) hide a failed test (b) use the same load (c) repeat each test (d) measure the same way
26. 26.🧪 Is it good or poor testing to test it only once? (a) poor testing (b) good testing
27. 27.🔢 To build and test a straw bridge, which comes first: “sketch three ideas” or “build it with straws”? (a) sketch three ideas (b) build it with straws
28. 28.🔢 To build and test a straw bridge, which comes first: “sketch three ideas” or “choose and draw one”? (a) choose and draw one (b) sketch three ideas
29. 29.🔢 To build and test a straw bridge, which is the LAST step? (a) load it with coins (b) strengthen the weak part (c) choose and draw one (d) read the challenge rules
30. 30.🧪 A paper bridge was tested three times. It held 410 g, 250 g and 360 g. What is the mean (average) load it held, in grams?
31. 31.🧪 A paper bridge was tested three times. It held 270 g, 110 g and 130 g. What is the mean (average) load it held, in grams?
32. 32.🧪 A paper bridge was tested three times. It held 240 g, 90 g and 150 g. What is the mean (average) load it held, in grams?
33. 33.🔢 To build and test a straw bridge, what comes right after “read the challenge rules”? (a) strengthen the weak part (b) build it with straws (c) sketch three ideas (d) choose and draw one
34. 34.🧪 Is it good or poor testing to use the same load? (a) good testing (b) poor testing
35. 35.🔍 Which is the odd one out? (a) change only one thing (b) record every result (c) use the same load (d) change lots at once
36. 36.🧪 Three prototype bridges were tested with the same method. Design A held 250 g, design B held 200 g and design C held 300 g. Which design was the weakest? (a) design C (b) design B (c) design A
37. 37.🧪 The first prototype held 90 g. After the team improved it, the new prototype held 210 g. How many more grams did it hold?
38. 38.🔢 To build and test a straw bridge, which comes first: “read the challenge rules” or “load it with coins”? (a) load it with coins (b) read the challenge rules
39. 39.🧪 A paper bridge was tested three times. It held 400 g, 280 g and 250 g. What is the mean (average) load it held, in grams?
40. 40.🧪 A paper bridge was tested three times. It held 240 g, 80 g and 130 g. What is the mean (average) load it held, in grams?

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