Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 338 · 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.True or false: to use the same load is poor testing. (a) True (b) False
2. 2.🧪 Is it good or poor testing to measure the same way? (a) poor testing (b) good testing
3. 3.🧪 In a fair test, how many things do you change at a time? (a) none (b) one (c) two (d) all of them
4. 4.🔢 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
5. 5.True or false: to record every result is good testing. (a) True (b) False
6. 6.🧪 Is it good or poor testing to skip writing results? (a) good testing (b) poor testing
7. 7.🔍 Which is the odd one out? (a) measure the same way (b) test it only once (c) change lots at once (d) guess, do not measure
8. 8.True or false: to record every result is poor testing. (a) True (b) False
9. 9.🧪 Why do engineers make prototypes? (a) to decorate a room (b) to avoid testing (c) to sell them at once (d) to test ideas cheaply
10. 10.🔍 Which is the odd one out? (a) record every result (b) use the same load (c) repeat each test (d) use a new load each time
11. 11.🧪 Three prototype bridges were tested with the same method. Design A held 350 g, design B held 300 g and design C held 250 g. Which design was the weakest? (a) design C (b) design B (c) design A
12. 12.🧪 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 weakest? (a) design B (b) design A (c) design C
13. 13.🧪 A paper bridge was tested three times. It held 340 g, 270 g and 410 g. What is the mean (average) load it held, in grams?
14. 14.True or false: to hide a failed test is poor testing. (a) True (b) False
15. 15.🧪 Is it good or poor testing to guess, do not measure? (a) good testing (b) poor testing
16. 16.🔢 To build and test a straw bridge, what comes right after “read the challenge rules”? (a) sketch three ideas (b) strengthen the weak part (c) build it with straws (d) choose and draw one
17. 17.🔢 To build and test a straw bridge, what comes right after “sketch three ideas”? (a) read the challenge rules (b) load it with coins (c) build it with straws (d) choose and draw one
18. 18.🔍 Which is the odd one out? (a) measure the same way (b) repeat each test (c) change only one thing (d) change lots at once
19. 19.🔍 Which is the odd one out? (a) record every result (b) skip writing results (c) measure the same way (d) repeat each test
20. 20.🧪 The first prototype held 290 g. After the team improved it, the new prototype held 360 g. How many more grams did it hold?
21. 21.🧪 A paper bridge was tested three times. It held 220 g, 70 g and 160 g. What is the mean (average) load it held, in grams?
22. 22.🔍 Which is the odd one out? (a) repeat each test (b) use the same load (c) change only one thing (d) guess, do not measure
23. 23.🧪 Is it good or poor testing to change lots at once? (a) poor testing (b) good testing
24. 24.🧪 The first prototype held 170 g. After the team improved it, the new prototype held 260 g. How many more grams did it hold?
25. 25.🧪 Is it good or poor testing to repeat each test? (a) good testing (b) poor testing
26. 26.🧪 Three prototype bridges were tested with the same method. Design A held 100 g, design B held 150 g and design C held 200 g. Which design was the strongest? (a) design B (b) design C (c) design A
27. 27.🔢 To build and test a straw bridge, which comes first: “read the challenge rules” or “strengthen the weak part”? (a) read the challenge rules (b) strengthen the weak part
28. 28.🧪 Three prototype bridges were tested with the same method. Design A held 270 g, design B held 320 g and design C held 370 g. Which design was the strongest? (a) design B (b) design A (c) design C
29. 29.🧪 A paper bridge was tested three times. It held 240 g, 210 g and 240 g. What is the mean (average) load it held, in grams?
30. 30.🔢 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
31. 31.🧪 Three prototype bridges were tested with the same method. Design A held 110 g, design B held 210 g and design C held 160 g. Which design was the strongest? (a) design A (b) design B (c) design C
32. 32.🧪 Is it good or poor testing to record every result? (a) good testing (b) poor testing
33. 33.🔢 To build and test a straw bridge, which is the FIRST step? (a) strengthen the weak part (b) choose and draw one (c) read the challenge rules (d) sketch three ideas
34. 34.🧪 A paper bridge was tested three times. It held 170 g, 140 g and 200 g. What is the mean (average) load it held, in grams?
35. 35.🔢 To build and test a straw bridge, which comes first: “build it with straws” or “strengthen the weak part”? (a) build it with straws (b) strengthen the weak part
36. 36.🧪 What is a prototype? (a) the final product (b) a broken part (c) an early test model (d) a sales poster
37. 37.🧪 A paper bridge was tested three times. It held 250 g, 120 g and 230 g. What is the mean (average) load it held, in grams?
38. 38.🔢 To build and test a straw bridge, which is the LAST step? (a) strengthen the weak part (b) sketch three ideas (c) build it with straws (d) read the challenge rules
39. 39.🧪 A paper bridge was tested three times. It held 270 g, 130 g and 230 g. What is the mean (average) load it held, in grams?
40. 40.🧪 A paper bridge was tested three times. It held 300 g, 210 g and 360 g. What is the mean (average) load it held, in grams?

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