Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 452 · 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.🔢 To build and test a straw bridge, which comes first: “read the challenge rules” or “build it with straws”? (a) read the challenge rules (b) build it with straws
2. 2.🧪 In a fair test, how many things do you change at a time? (a) two (b) none (c) all of them (d) one
3. 3.🧪 Is it good or poor testing to change lots at once? (a) poor testing (b) good testing
4. 4.🧪 A paper bridge was tested three times. It held 160 g, 120 g and 200 g. What is the mean (average) load it held, in grams?
5. 5.🔍 Which is the odd one out? (a) hide a failed test (b) use a new load each time (c) change only one thing (d) test it only once
6. 6.🧪 Is it good or poor testing to hide a failed test? (a) poor testing (b) good testing
7. 7.🔢 To build and test a straw bridge, which is the LAST step? (a) load it with coins (b) read the challenge rules (c) strengthen the weak part (d) choose and draw one
8. 8.🔍 Which is the odd one out? (a) hide a failed test (b) use the same load (c) repeat each test (d) record every result
9. 9.🧪 Is it good or poor testing to record every result? (a) good testing (b) poor testing
10. 10.True or false: to measure the same way is good testing. (a) True (b) False
11. 11.🧪 Is it good or poor testing to measure the same way? (a) poor testing (b) good testing
12. 12.🧪 A paper bridge was tested three times. It held 250 g, 70 g and 130 g. What is the mean (average) load it held, in grams?
13. 13.🔢 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
14. 14.🔍 Which is the odd one out? (a) change only one thing (b) repeat each test (c) test it only once (d) measure the same way
15. 15.🧪 Why do engineers make prototypes? (a) to sell them at once (b) to test ideas cheaply (c) to avoid testing (d) to decorate a room
16. 16.🧪 What is a prototype? (a) the final product (b) a broken part (c) an early test model (d) a sales poster
17. 17.🔍 Which is the odd one out? (a) use the same load (b) record every result (c) guess, do not measure (d) repeat each test
18. 18.🧪 A paper bridge was tested three times. It held 320 g, 180 g and 250 g. What is the mean (average) load it held, in grams?
19. 19.🔢 To build and test a straw bridge, what comes right after “build it with straws”? (a) choose and draw one (b) strengthen the weak part (c) load it with coins (d) read the challenge rules
20. 20.🔢 To build and test a straw bridge, which is the FIRST step? (a) build it with straws (b) choose and draw one (c) read the challenge rules (d) sketch three ideas
21. 21.True or false: to repeat each test is good testing. (a) False (b) True
22. 22.🧪 Is it good or poor testing to use a new load each time? (a) good testing (b) poor testing
23. 23.🧪 A paper bridge was tested three times. It held 350 g, 260 g and 200 g. What is the mean (average) load it held, in grams?
24. 24.🔍 Which is the odd one out? (a) guess, do not measure (b) use a new load each time (c) measure the same way (d) skip writing results
25. 25.🔢 To build and test a straw bridge, what comes right after “read the challenge rules”? (a) strengthen the weak part (b) load it with coins (c) choose and draw one (d) sketch three ideas
26. 26.True or false: to test it only once is good testing. (a) True (b) False
27. 27.🧪 The first prototype held 110 g. After the team improved it, the new prototype held 300 g. How many more grams did it hold?
28. 28.🧪 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 strongest? (a) design C (b) design A (c) design B
29. 29.True or false: to measure the same way is poor testing. (a) True (b) False
30. 30.🧪 Three prototype bridges were tested with the same method. Design A held 320 g, design B held 220 g and design C held 270 g. Which design was the weakest? (a) design B (b) design C (c) design A
31. 31.🧪 Three prototype bridges were tested with the same method. Design A held 280 g, design B held 330 g and design C held 380 g. Which design was the weakest? (a) design A (b) design C (c) design B
32. 32.🧪 Three prototype bridges were tested with the same method. Design A held 100 g, design B held 200 g and design C held 150 g. Which design was the strongest? (a) design A (b) design C (c) design B
33. 33.🧪 A paper bridge was tested three times. It held 230 g, 230 g and 230 g. What is the mean (average) load it held, in grams?
34. 34.🧪 Why repeat a test three times? (a) it looks busy (b) the first is wrong (c) to use more paper (d) to get reliable results
35. 35.True or false: to use a new load each time is good testing. (a) False (b) True
36. 36.True or false: to skip writing results is good testing. (a) False (b) True
37. 37.🔍 Which is the odd one out? (a) change only one thing (b) use the same load (c) change lots at once (d) repeat each test
38. 38.🧪 A paper bridge was tested three times. It held 350 g, 270 g and 220 g. What is the mean (average) load it held, in grams?
39. 39.🧪 The first prototype held 270 g. After the team improved it, the new prototype held 400 g. How many more grams did it hold?
40. 40.🧪 A paper bridge was tested three times. It held 330 g, 290 g and 340 g. What is the mean (average) load it held, in grams?

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