Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 649 · 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: “strengthen the weak part” or “sketch three ideas”? (a) sketch three ideas (b) strengthen the weak part
2. 2.🧪 A paper bridge was tested three times. It held 310 g, 270 g and 320 g. What is the mean (average) load it held, in grams?
3. 3.🧪 A paper bridge was tested three times. It held 190 g, 80 g and 240 g. What is the mean (average) load it held, in grams?
4. 4.🧪 What is a prototype? (a) a sales poster (b) a broken part (c) an early test model (d) the final product
5. 5.🧪 A paper bridge was tested three times. It held 250 g, 100 g and 100 g. What is the mean (average) load it held, in grams?
6. 6.🧪 A paper bridge was tested three times. It held 360 g, 330 g and 360 g. What is the mean (average) load it held, in grams?
7. 7.🧪 Three prototype bridges were tested with the same method. Design A held 200 g, design B held 100 g and design C held 150 g. Which design was the strongest? (a) design C (b) design B (c) design A
8. 8.🧪 A paper bridge was tested three times. It held 390 g, 310 g and 230 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) good testing (b) poor testing
10. 10.True or false: to use a new load each time is poor testing. (a) False (b) True
11. 11.🔍 Which is the odd one out? (a) change only one thing (b) use the same load (c) hide a failed test (d) repeat each test
12. 12.🔍 Which is the odd one out? (a) change lots at once (b) use a new load each time (c) record every result (d) skip writing results
13. 13.🧪 A paper bridge was tested three times. It held 290 g, 170 g and 290 g. What is the mean (average) load it held, in grams?
14. 14.🧪 A paper bridge was tested three times. It held 380 g, 270 g and 340 g. What is the mean (average) load it held, in grams?
15. 15.🧪 Is it good or poor testing to measure the same way? (a) good testing (b) poor testing
16. 16.🧪 Three prototype bridges were tested with the same method. Design A held 250 g, design B held 200 g and design C held 300 g. Which design was the weakest? (a) design C (b) design A (c) design B
17. 17.🧪 The first prototype held 220 g. After the team improved it, the new prototype held 380 g. How many more grams did it hold?
18. 18.True or false: to skip writing results is good testing. (a) True (b) False
19. 19.True or false: to measure the same way is good testing. (a) True (b) False
20. 20.🧪 Three prototype bridges were tested with the same method. Design A held 310 g, design B held 210 g and design C held 260 g. Which design was the strongest? (a) design C (b) design A (c) design B
21. 21.🧪 A paper bridge was tested three times. It held 300 g, 200 g and 310 g. What is the mean (average) load it held, in grams?
22. 22.🧪 Why repeat a test three times? (a) it looks busy (b) to use more paper (c) to get reliable results (d) the first is wrong
23. 23.🧪 The first prototype held 180 g. After the team improved it, the new prototype held 350 g. How many more grams did it hold?
24. 24.🔍 Which is the odd one out? (a) test it only once (b) measure the same way (c) repeat each test (d) change only one thing
25. 25.🧪 Three prototype bridges were tested with the same method. Design A held 260 g, design B held 210 g and design C held 160 g. Which design was the weakest? (a) design A (b) design B (c) design C
26. 26.🔢 To build and test a straw bridge, which is the FIRST step? (a) build it with straws (b) read the challenge rules (c) strengthen the weak part (d) load it with coins
27. 27.🧪 Is it good or poor testing to test it only once? (a) good testing (b) poor testing
28. 28.🔍 Which is the odd one out? (a) measure the same way (b) change lots at once (c) record every result (d) change only one thing
29. 29.🔍 Which is the odd one out? (a) test it only once (b) use a new load each time (c) guess, do not measure (d) change only one thing
30. 30.🧪 A paper bridge was tested three times. It held 290 g, 210 g and 280 g. What is the mean (average) load it held, in grams?
31. 31.🧪 In a fair test, how many things do you change at a time? (a) two (b) none (c) one (d) all of them
32. 32.🧪 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?
33. 33.🧪 A paper bridge was tested three times. It held 400 g, 240 g and 260 g. What is the mean (average) load it held, in grams?
34. 34.🔢 To build and test a straw bridge, what comes right after “choose and draw one”? (a) load it with coins (b) strengthen the weak part (c) sketch three ideas (d) build it with straws
35. 35.🧪 The first prototype held 120 g. After the team improved it, the new prototype held 130 g. How many more grams did it hold?
36. 36.🔍 Which is the odd one out? (a) change only one thing (b) record every result (c) use the same load (d) guess, do not measure
37. 37.🧪 Why do engineers make prototypes? (a) to test ideas cheaply (b) to sell them at once (c) to avoid testing (d) to decorate a room
38. 38.🔢 To build and test a straw bridge, which is the LAST step? (a) load it with coins (b) strengthen the weak part (c) choose and draw one (d) read the challenge rules
39. 39.🧪 The first prototype held 80 g. After the team improved it, the new prototype held 110 g. How many more grams did it hold?
40. 40.🧪 Three prototype bridges were tested with the same method. Design A held 320 g, design B held 270 g and design C held 370 g. Which design was the strongest? (a) design B (b) design A (c) design C

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