Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 234 · 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.🧪 A paper bridge was tested three times. It held 260 g, 210 g and 220 g. What is the mean (average) load it held, in grams?
2. 2.🔢 To build and test a straw bridge, what comes right after “sketch three ideas”? (a) load it with coins (b) choose and draw one (c) strengthen the weak part (d) read the challenge rules
3. 3.🧪 The first prototype held 190 g. After the team improved it, the new prototype held 320 g. How many more grams did it hold?
4. 4.🧪 Three prototype bridges were tested with the same method. Design A held 310 g, design B held 360 g and design C held 260 g. Which design was the weakest? (a) design C (b) design A (c) design B
5. 5.🧪 What is a prototype? (a) an early test model (b) a broken part (c) a sales poster (d) the final product
6. 6.🔍 Which is the odd one out? (a) use a new load each time (b) change lots at once (c) skip writing results (d) change only one thing
7. 7.🔍 Which is the odd one out? (a) repeat each test (b) change lots at once (c) change only one thing (d) measure the same way
8. 8.🧪 Three prototype bridges were tested with the same method. Design A held 370 g, design B held 270 g and design C held 320 g. Which design was the weakest? (a) design B (b) design A (c) design C
9. 9.🧪 The first prototype held 210 g. After the team improved it, the new prototype held 270 g. How many more grams did it hold?
10. 10.🧪 Why repeat a test three times? (a) to use more paper (b) it looks busy (c) to get reliable results (d) the first is wrong
11. 11.🧪 The first prototype held 50 g. After the team improved it, the new prototype held 210 g. How many more grams did it hold?
12. 12.🧪 The first prototype held 280 g. After the team improved it, the new prototype held 410 g. How many more grams did it hold?
13. 13.🔢 To build and test a straw bridge, which is the LAST step? (a) sketch three ideas (b) strengthen the weak part (c) read the challenge rules (d) build it with straws
14. 14.🔍 Which is the odd one out? (a) use a new load each time (b) change only one thing (c) record every result (d) repeat each test
15. 15.🔍 Which is the odd one out? (a) guess, do not measure (b) repeat each test (c) record every result (d) use the same load
16. 16.True or false: to hide a failed test is poor testing. (a) False (b) True
17. 17.🧪 A paper bridge was tested three times. It held 230 g, 150 g and 310 g. What is the mean (average) load it held, in grams?
18. 18.True or false: to repeat each test is poor testing. (a) True (b) False
19. 19.🧪 In a fair test, how many things do you change at a time? (a) one (b) all of them (c) none (d) two
20. 20.True or false: to use a new load each time is good testing. (a) False (b) True
21. 21.🧪 A paper bridge was tested three times. It held 280 g, 220 g and 160 g. What is the mean (average) load it held, in grams?
22. 22.🧪 The first prototype held 200 g. After the team improved it, the new prototype held 290 g. How many more grams did it hold?
23. 23.🔍 Which is the odd one out? (a) hide a failed test (b) measure the same way (c) test it only once (d) skip writing results
24. 24.🔢 To build and test a straw bridge, which is the FIRST step? (a) choose and draw one (b) sketch three ideas (c) load it with coins (d) read the challenge rules
25. 25.True or false: to change only one thing is poor testing. (a) True (b) False
26. 26.🧪 Is it good or poor testing to change lots at once? (a) poor testing (b) good testing
27. 27.🧪 Is it good or poor testing to change only one thing? (a) good testing (b) poor testing
28. 28.🔢 To build and test a straw bridge, what comes right after “load it with coins”? (a) choose and draw one (b) read the challenge rules (c) strengthen the weak part (d) sketch three ideas
29. 29.🧪 The first prototype held 180 g. After the team improved it, the new prototype held 360 g. How many more grams did it hold?
30. 30.🧪 Three prototype bridges were tested with the same method. Design A held 210 g, design B held 310 g and design C held 260 g. Which design was the weakest? (a) design C (b) design A (c) design B
31. 31.True or false: to change lots at once is poor testing. (a) True (b) False
32. 32.🧪 Is it good or poor testing to use a new load each time? (a) good testing (b) poor testing
33. 33.True or false: to guess, do not measure is good testing. (a) False (b) True
34. 34.🧪 A paper bridge was tested three times. It held 300 g, 220 g and 230 g. What is the mean (average) load it held, in grams?
35. 35.🔍 Which is the odd one out? (a) record every result (b) measure the same way (c) test it only once (d) repeat each test
36. 36.🧪 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 C (b) design B (c) design A
37. 37.🧪 The first prototype held 180 g. After the team improved it, the new prototype held 320 g. How many more grams did it hold?
38. 38.🧪 Is it good or poor testing to record every result? (a) poor testing (b) good testing
39. 39.🧪 A paper bridge was tested three times. It held 350 g, 250 g and 270 g. What is the mean (average) load it held, in grams?
40. 40.True or false: to repeat each test is good testing. (a) True (b) False

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