Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 263 · 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 280 g, design B held 330 g and design C held 230 g. Which design was the weakest? (a) design A (b) design C (c) design B
2. 2.🧪 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
3. 3.🧪 A paper bridge was tested three times. It held 330 g, 260 g and 400 g. What is the mean (average) load it held, in grams?
4. 4.🧪 Is it good or poor testing to measure the same way? (a) poor testing (b) good testing
5. 5.🧪 Is it good or poor testing to test it only once? (a) good testing (b) poor testing
6. 6.🧪 Is it good or poor testing to hide a failed test? (a) good testing (b) poor testing
7. 7.🔢 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
8. 8.True or false: to change lots at once is good testing. (a) False (b) True
9. 9.🧪 Is it good or poor testing to repeat each test? (a) poor testing (b) good testing
10. 10.🔢 To build and test a straw bridge, what comes right after “read the challenge rules”? (a) strengthen the weak part (b) sketch three ideas (c) choose and draw one (d) build it with straws
11. 11.🔍 Which is the odd one out? (a) use the same load (b) test it only once (c) change only one thing (d) measure the same way
12. 12.🔍 Which is the odd one out? (a) test it only once (b) use a new load each time (c) skip writing results (d) use the same load
13. 13.🧪 Is it good or poor testing to use a new load each time? (a) good testing (b) poor testing
14. 14.🧪 The first prototype held 70 g. After the team improved it, the new prototype held 250 g. How many more grams did it hold?
15. 15.True or false: to change lots at once is poor testing. (a) True (b) False
16. 16.🧪 In a fair test, how many things do you change at a time? (a) none (b) all of them (c) two (d) one
17. 17.🧪 The first prototype held 130 g. After the team improved it, the new prototype held 280 g. How many more grams did it hold?
18. 18.🧪 Is it good or poor testing to change lots at once? (a) poor testing (b) good testing
19. 19.🧪 A paper bridge was tested three times. It held 340 g, 220 g and 250 g. What is the mean (average) load it held, in grams?
20. 20.🔢 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) build it with straws (d) strengthen the weak part
21. 21.🧪 Is it good or poor testing to skip writing results? (a) poor testing (b) good testing
22. 22.True or false: to use the same load is good testing. (a) False (b) True
23. 23.True or false: to change only one thing is poor testing. (a) False (b) True
24. 24.🔢 To build and test a straw bridge, which comes first: “choose and draw one” or “sketch three ideas”? (a) sketch three ideas (b) choose and draw one
25. 25.🧪 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 weakest? (a) design B (b) design C (c) design A
26. 26.🧪 The first prototype held 170 g. After the team improved it, the new prototype held 330 g. How many more grams did it hold?
27. 27.🧪 The first prototype held 260 g. After the team improved it, the new prototype held 460 g. How many more grams did it hold?
28. 28.True or false: to test it only once is poor testing. (a) False (b) True
29. 29.🔍 Which is the odd one out? (a) repeat each test (b) record every result (c) use a new load each time (d) measure the same way
30. 30.🧪 The first prototype held 60 g. After the team improved it, the new prototype held 160 g. How many more grams did it hold?
31. 31.🧪 Why do engineers make prototypes? (a) to avoid testing (b) to test ideas cheaply (c) to decorate a room (d) to sell them at once
32. 32.🔢 To build and test a straw bridge, which comes first: “strengthen the weak part” or “build it with straws”? (a) strengthen the weak part (b) build it with straws
33. 33.🧪 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 C (b) design B (c) design A
34. 34.🧪 The first prototype held 150 g. After the team improved it, the new prototype held 190 g. How many more grams did it hold?
35. 35.🔢 To build and test a straw bridge, which is the LAST step? (a) strengthen the weak part (b) choose and draw one (c) read the challenge rules (d) sketch three ideas
36. 36.🔍 Which is the odd one out? (a) record every result (b) hide a failed test (c) change only one thing (d) measure the same way
37. 37.🔢 To build and test a straw bridge, which comes first: “read the challenge rules” or “choose and draw one”? (a) choose and draw one (b) read the challenge rules
38. 38.🧪 Three prototype bridges were tested with the same method. Design A held 280 g, design B held 380 g and design C held 330 g. Which design was the strongest? (a) design A (b) design C (c) design B
39. 39.🧪 The first prototype held 280 g. After the team improved it, the new prototype held 480 g. How many more grams did it hold?
40. 40.🧪 Three prototype bridges were tested with the same method. Design A held 170 g, design B held 220 g and design C held 270 g. Which design was the strongest? (a) design A (b) design C (c) design B

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