Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 302 · 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 330 g, design B held 280 g and design C held 380 g. Which design was the weakest? (a) design C (b) design A (c) design B
2. 2.🧪 Why do engineers make prototypes? (a) to test ideas cheaply (b) to decorate a room (c) to avoid testing (d) to sell them at once
3. 3.🔢 To build and test a straw bridge, what comes right after “load it with coins”? (a) strengthen the weak part (b) build it with straws (c) sketch three ideas (d) read the challenge rules
4. 4.True or false: to test it only once is good testing. (a) False (b) True
5. 5.🧪 Three prototype bridges were tested with the same method. Design A held 260 g, design B held 210 g and design C held 310 g. Which design was the strongest? (a) design B (b) design A (c) design C
6. 6.🧪 A paper bridge was tested three times. It held 350 g, 160 g and 240 g. What is the mean (average) load it held, in grams?
7. 7.🧪 Is it good or poor testing to repeat each test? (a) good testing (b) poor testing
8. 8.🔍 Which is the odd one out? (a) guess, do not measure (b) record every result (c) test it only once (d) use a new load each time
9. 9.🧪 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
10. 10.🧪 In a fair test, how many things do you change at a time? (a) all of them (b) one (c) none (d) two
11. 11.🔢 To build and test a straw bridge, which comes first: “read the challenge rules” or “choose and draw one”? (a) read the challenge rules (b) choose and draw one
12. 12.🧪 What is a prototype? (a) a sales poster (b) the final product (c) an early test model (d) a broken part
13. 13.🧪 Is it good or poor testing to measure the same way? (a) poor testing (b) good testing
14. 14.🔍 Which is the odd one out? (a) hide a failed test (b) use the same load (c) record every result (d) measure the same way
15. 15.🔢 To build and test a straw bridge, what comes right after “read the challenge rules”? (a) choose and draw one (b) load it with coins (c) sketch three ideas (d) build it with straws
16. 16.🧪 Three prototype bridges were tested with the same method. Design A held 360 g, design B held 310 g and design C held 260 g. Which design was the weakest? (a) design B (b) design C (c) design A
17. 17.🧪 Is it good or poor testing to use a new load each time? (a) good testing (b) poor testing
18. 18.🧪 A paper bridge was tested three times. It held 300 g, 120 g and 210 g. What is the mean (average) load it held, in grams?
19. 19.True or false: to hide a failed test is poor testing. (a) False (b) True
20. 20.True or false: to record every result is poor testing. (a) False (b) True
21. 21.🔢 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
22. 22.🧪 Is it good or poor testing to test it only once? (a) good testing (b) poor testing
23. 23.🔍 Which is the odd one out? (a) repeat each test (b) guess, do not measure (c) record every result (d) use the same load
24. 24.🧪 Is it good or poor testing to hide a failed test? (a) good testing (b) poor testing
25. 25.🧪 Is it good or poor testing to use the same load? (a) poor testing (b) good testing
26. 26.True or false: to guess, do not measure is good testing. (a) False (b) True
27. 27.🔢 To build and test a straw bridge, which is the FIRST step? (a) strengthen the weak part (b) read the challenge rules (c) choose and draw one (d) sketch three ideas
28. 28.🧪 Three prototype bridges were tested with the same method. Design A held 350 g, design B held 300 g and design C held 400 g. Which design was the weakest? (a) design A (b) design C (c) design B
29. 29.True or false: to test it only once is poor testing. (a) False (b) True
30. 30.🧪 A paper bridge was tested three times. It held 300 g, 120 g and 240 g. What is the mean (average) load it held, in grams?
31. 31.🔢 To build and test a straw bridge, what comes right after “sketch three ideas”? (a) load it with coins (b) choose and draw one (c) build it with straws (d) strengthen the weak part
32. 32.🧪 Three prototype bridges were tested with the same method. Design A held 190 g, design B held 240 g and design C held 140 g. Which design was the weakest? (a) design A (b) design C (c) design B
33. 33.🔢 To build and test a straw bridge, what comes right after “build it with straws”? (a) load it with coins (b) read the challenge rules (c) strengthen the weak part (d) sketch three ideas
34. 34.🧪 Is it good or poor testing to change lots at once? (a) good testing (b) poor testing
35. 35.🧪 The first prototype held 280 g. After the team improved it, the new prototype held 450 g. How many more grams did it hold?
36. 36.🧪 A paper bridge was tested three times. It held 340 g, 200 g and 210 g. What is the mean (average) load it held, in grams?
37. 37.🧪 Three prototype bridges were tested with the same method. Design A held 170 g, design B held 220 g and design C held 120 g. Which design was the strongest? (a) design C (b) design A (c) design B
38. 38.🧪 Is it good or poor testing to skip writing results? (a) good testing (b) poor testing
39. 39.True or false: to use the same load is poor testing. (a) True (b) False
40. 40.True or false: to repeat each test is good testing. (a) True (b) False

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