Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 474 · 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.🔍 Which is the odd one out? (a) hide a failed test (b) guess, do not measure (c) use a new load each time (d) measure the same way
2. 2.🧪 In a fair test, how many things do you change at a time? (a) none (b) all of them (c) two (d) one
3. 3.🧪 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 B (b) design C (c) design A
4. 4.🔢 To build and test a straw bridge, which comes first: “read the challenge rules” or “build it with straws”? (a) build it with straws (b) read the challenge rules
5. 5.🧪 Is it good or poor testing to skip writing results? (a) poor testing (b) good testing
6. 6.🧪 A paper bridge was tested three times. It held 200 g, 140 g and 260 g. What is the mean (average) load it held, in grams?
7. 7.🧪 Is it good or poor testing to record every result? (a) good testing (b) poor testing
8. 8.🧪 The first prototype held 130 g. After the team improved it, the new prototype held 150 g. How many more grams did it hold?
9. 9.🔢 To build and test a straw bridge, which comes first: “build it with straws” or “strengthen the weak part”? (a) strengthen the weak part (b) build it with straws
10. 10.🧪 The first prototype held 300 g. After the team improved it, the new prototype held 380 g. How many more grams did it hold?
11. 11.🧪 What is a prototype? (a) an early test model (b) a broken part (c) the final product (d) a sales poster
12. 12.🔢 To build and test a straw bridge, which comes first: “sketch three ideas” or “load it with coins”? (a) load it with coins (b) sketch three ideas
13. 13.🧪 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
14. 14.🧪 A paper bridge was tested three times. It held 300 g, 200 g and 400 g. What is the mean (average) load it held, in grams?
15. 15.🧪 Is it good or poor testing to hide a failed test? (a) poor testing (b) good testing
16. 16.True or false: to repeat each test is good testing. (a) True (b) False
17. 17.🧪 Why do engineers make prototypes? (a) to sell them at once (b) to avoid testing (c) to test ideas cheaply (d) to decorate a room
18. 18.🔍 Which is the odd one out? (a) use the same load (b) hide a failed test (c) use a new load each time (d) guess, do not measure
19. 19.🔢 To build and test a straw bridge, what comes right after “read the challenge rules”? (a) sketch three ideas (b) choose and draw one (c) load it with coins (d) strengthen the weak part
20. 20.True or false: to change only one thing is good testing. (a) True (b) False
21. 21.🧪 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 weakest? (a) design B (b) design A (c) design C
22. 22.🧪 A paper bridge was tested three times. It held 170 g, 80 g and 260 g. What is the mean (average) load it held, in grams?
23. 23.🔍 Which is the odd one out? (a) test it only once (b) record every result (c) change only one thing (d) measure the same way
24. 24.True or false: to measure the same way is good testing. (a) False (b) True
25. 25.True or false: to skip writing results is poor testing. (a) True (b) False
26. 26.🔍 Which is the odd one out? (a) use a new load each time (b) skip writing results (c) record every result (d) guess, do not measure
27. 27.True or false: to change lots at once is poor testing. (a) True (b) False
28. 28.🧪 A paper bridge was tested three times. It held 240 g, 170 g and 220 g. What is the mean (average) load it held, in grams?
29. 29.🧪 Is it good or poor testing to repeat each test? (a) poor testing (b) good testing
30. 30.True or false: to repeat each test is poor testing. (a) False (b) True
31. 31.🔢 To build and test a straw bridge, what comes right after “sketch three ideas”? (a) read the challenge rules (b) strengthen the weak part (c) choose and draw one (d) build it with straws
32. 32.🔍 Which is the odd one out? (a) test it only once (b) hide a failed test (c) change only one thing (d) use a new load each time
33. 33.🧪 The first prototype held 150 g. After the team improved it, the new prototype held 260 g. How many more grams did it hold?
34. 34.🧪 Is it good or poor testing to use a new load each time? (a) good testing (b) poor testing
35. 35.🔢 To build and test a straw bridge, what comes right after “build it with straws”? (a) strengthen the weak part (b) load it with coins (c) sketch three ideas (d) read the challenge rules
36. 36.🔍 Which is the odd one out? (a) repeat each test (b) change only one thing (c) measure the same way (d) use a new load each time
37. 37.🔢 To build and test a straw bridge, which comes first: “strengthen the weak part” or “read the challenge rules”? (a) strengthen the weak part (b) read the challenge rules
38. 38.🧪 The first prototype held 150 g. After the team improved it, the new prototype held 190 g. How many more grams did it hold?
39. 39.🔍 Which is the odd one out? (a) hide a failed test (b) skip writing results (c) change lots at once (d) repeat each test
40. 40.🧪 Three prototype bridges were tested with the same method. Design A held 260 g, design B held 310 g and design C held 360 g. Which design was the strongest? (a) design B (b) design C (c) design A

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