Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 484 · 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 is the LAST step? (a) sketch three ideas (b) read the challenge rules (c) strengthen the weak part (d) choose and draw one
2. 2.🔢 To build and test a straw bridge, what comes right after “choose and draw one”? (a) read the challenge rules (b) load it with coins (c) strengthen the weak part (d) build it with straws
3. 3.🧪 Is it good or poor testing to hide a failed test? (a) good testing (b) poor testing
4. 4.🧪 A paper bridge was tested three times. It held 240 g, 180 g and 180 g. What is the mean (average) load it held, in grams?
5. 5.🧪 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
6. 6.🧪 A paper bridge was tested three times. It held 400 g, 310 g and 220 g. What is the mean (average) load it held, in grams?
7. 7.🧪 The first prototype held 210 g. After the team improved it, the new prototype held 400 g. How many more grams did it hold?
8. 8.🔢 To build and test a straw bridge, what comes right after “read the challenge rules”? (a) sketch three ideas (b) load it with coins (c) choose and draw one (d) build it with straws
9. 9.🧪 A paper bridge was tested three times. It held 300 g, 270 g and 330 g. What is the mean (average) load it held, in grams?
10. 10.🧪 What is a prototype? (a) a broken part (b) the final product (c) a sales poster (d) an early test model
11. 11.🧪 Why repeat a test three times? (a) to use more paper (b) the first is wrong (c) it looks busy (d) to get reliable results
12. 12.🧪 The first prototype held 120 g. After the team improved it, the new prototype held 200 g. How many more grams did it hold?
13. 13.True or false: to repeat each test is poor testing. (a) False (b) True
14. 14.🧪 The first prototype held 280 g. After the team improved it, the new prototype held 420 g. How many more grams did it hold?
15. 15.🔢 To build and test a straw bridge, what comes right after “build it with straws”? (a) strengthen the weak part (b) sketch three ideas (c) choose and draw one (d) load it with coins
16. 16.🧪 Is it good or poor testing to use a new load each time? (a) poor testing (b) good testing
17. 17.🧪 A paper bridge was tested three times. It held 340 g, 310 g and 310 g. What is the mean (average) load it held, in grams?
18. 18.🧪 Three prototype bridges were tested with the same method. Design A held 270 g, design B held 220 g and design C held 320 g. Which design was the strongest? (a) design A (b) design C (c) design B
19. 19.🔢 To build and test a straw bridge, which comes first: “build it with straws” or “choose and draw one”? (a) build it with straws (b) choose and draw one
20. 20.🔍 Which is the odd one out? (a) use the same load (b) change lots at once (c) repeat each test (d) change only one thing
21. 21.🧪 Is it good or poor testing to guess, do not measure? (a) poor testing (b) good testing
22. 22.🧪 A paper bridge was tested three times. It held 280 g, 170 g and 210 g. What is the mean (average) load it held, in grams?
23. 23.🧪 Three prototype bridges were tested with the same method. Design A held 310 g, design B held 260 g and design C held 360 g. Which design was the weakest? (a) design A (b) design C (c) design B
24. 24.🧪 A paper bridge was tested three times. It held 360 g, 250 g and 200 g. What is the mean (average) load it held, in grams?
25. 25.🧪 A paper bridge was tested three times. It held 320 g, 160 g and 180 g. What is the mean (average) load it held, in grams?
26. 26.🧪 A paper bridge was tested three times. It held 200 g, 120 g and 190 g. What is the mean (average) load it held, in grams?
27. 27.🔍 Which is the odd one out? (a) use the same load (b) record every result (c) guess, do not measure (d) change only one thing
28. 28.🔢 To build and test a straw bridge, which comes first: “read the challenge rules” or “strengthen the weak part”? (a) strengthen the weak part (b) read the challenge rules
29. 29.🧪 The first prototype held 280 g. After the team improved it, the new prototype held 310 g. How many more grams did it hold?
30. 30.🔍 Which is the odd one out? (a) change only one thing (b) repeat each test (c) measure the same way (d) hide a failed test
31. 31.True or false: to change only one thing is good testing. (a) True (b) False
32. 32.🧪 The first prototype held 200 g. After the team improved it, the new prototype held 220 g. How many more grams did it hold?
33. 33.🧪 Three prototype bridges were tested with the same method. Design A held 390 g, design B held 340 g and design C held 290 g. Which design was the weakest? (a) design C (b) design B (c) design A
34. 34.True or false: to test it only once is poor testing. (a) False (b) True
35. 35.True or false: to record every result is good testing. (a) False (b) True
36. 36.🧪 Three prototype bridges were tested with the same method. Design A held 320 g, design B held 370 g and design C held 270 g. Which design was the strongest? (a) design A (b) design C (c) design B
37. 37.True or false: to measure the same way is good testing. (a) False (b) True
38. 38.🔍 Which is the odd one out? (a) change only one thing (b) measure the same way (c) skip writing results (d) repeat each test
39. 39.🔢 To build and test a straw bridge, which is the FIRST step? (a) sketch three ideas (b) choose and draw one (c) strengthen the weak part (d) read the challenge rules
40. 40.🧪 Is it good or poor testing to change lots at once? (a) good testing (b) poor testing

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