Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 378 · 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.🧪 Is it good or poor testing to use the same load? (a) poor testing (b) good testing
2. 2.True or false: to guess, do not measure is good testing. (a) True (b) False
3. 3.🧪 Is it good or poor testing to change lots at once? (a) good testing (b) poor testing
4. 4.🧪 Three prototype bridges were tested with the same method. Design A held 250 g, design B held 200 g and design C held 150 g. Which design was the strongest? (a) design C (b) design B (c) design A
5. 5.🔢 To build and test a straw bridge, which comes first: “load it with coins” or “strengthen the weak part”? (a) load it with coins (b) strengthen the weak part
6. 6.🧪 The first prototype held 230 g. After the team improved it, the new prototype held 360 g. How many more grams did it hold?
7. 7.🔢 To build and test a straw bridge, which comes first: “build it with straws” or “read the challenge rules”? (a) read the challenge rules (b) build it with straws
8. 8.🧪 A paper bridge was tested three times. It held 390 g, 230 g and 340 g. What is the mean (average) load it held, in grams?
9. 9.🧪 Is it good or poor testing to change only one thing? (a) poor testing (b) good testing
10. 10.🧪 In a fair test, how many things do you change at a time? (a) all of them (b) none (c) two (d) one
11. 11.🔢 To build and test a straw bridge, which comes first: “build it with straws” or “load it with coins”? (a) build it with straws (b) load it with coins
12. 12.🔍 Which is the odd one out? (a) record every result (b) change only one thing (c) guess, do not measure (d) repeat each test
13. 13.🔍 Which is the odd one out? (a) measure the same way (b) repeat each test (c) test it only once (d) change only one thing
14. 14.🔢 To build and test a straw bridge, what comes right after “read the challenge rules”? (a) load it with coins (b) sketch three ideas (c) strengthen the weak part (d) choose and draw one
15. 15.🧪 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 B (b) design A (c) design C
16. 16.🧪 What is a prototype? (a) the final product (b) an early test model (c) a sales poster (d) a broken part
17. 17.🔢 To build and test a straw bridge, what comes right after “sketch three ideas”? (a) choose and draw one (b) load it with coins (c) strengthen the weak part (d) build it with straws
18. 18.🔢 To build and test a straw bridge, which is the LAST step? (a) sketch three ideas (b) read the challenge rules (c) choose and draw one (d) strengthen the weak part
19. 19.🧪 The first prototype held 130 g. After the team improved it, the new prototype held 230 g. How many more grams did it hold?
20. 20.🧪 Is it good or poor testing to record every result? (a) good testing (b) poor testing
21. 21.🧪 Is it good or poor testing to skip writing results? (a) poor testing (b) good testing
22. 22.🧪 Is it good or poor testing to repeat each test? (a) good testing (b) poor testing
23. 23.🧪 A paper bridge was tested three times. It held 360 g, 190 g and 320 g. What is the mean (average) load it held, in grams?
24. 24.🔢 To build and test a straw bridge, which is the FIRST step? (a) build it with straws (b) choose and draw one (c) sketch three ideas (d) read the challenge rules
25. 25.🧪 A paper bridge was tested three times. It held 240 g, 190 g and 260 g. What is the mean (average) load it held, in grams?
26. 26.🧪 A paper bridge was tested three times. It held 440 g, 240 g and 340 g. What is the mean (average) load it held, in grams?
27. 27.🔍 Which is the odd one out? (a) test it only once (b) change lots at once (c) skip writing results (d) change only one thing
28. 28.True or false: to test it only once is good testing. (a) True (b) False
29. 29.🧪 A paper bridge was tested three times. It held 230 g, 180 g and 280 g. What is the mean (average) load it held, in grams?
30. 30.🧪 Why do engineers make prototypes? (a) to avoid testing (b) to decorate a room (c) to test ideas cheaply (d) to sell them at once
31. 31.🧪 The first prototype held 150 g. After the team improved it, the new prototype held 280 g. How many more grams did it hold?
32. 32.🧪 The first prototype held 190 g. After the team improved it, the new prototype held 360 g. How many more grams did it hold?
33. 33.🧪 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?
34. 34.🧪 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 weakest? (a) design A (b) design C (c) design B
35. 35.🧪 Is it good or poor testing to measure the same way? (a) good testing (b) poor testing
36. 36.🧪 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 A (b) design C (c) design B
37. 37.🧪 Is it good or poor testing to use a new load each time? (a) poor testing (b) good testing
38. 38.True or false: to change only one thing is poor testing. (a) False (b) True
39. 39.🧪 The first prototype held 260 g. After the team improved it, the new prototype held 400 g. How many more grams did it hold?
40. 40.True or false: to hide a failed test is poor testing. (a) False (b) True

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