Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 544 · 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.🧪 Is it good or poor testing to repeat each test? (a) good testing (b) poor testing
2. 2.🧪 The first prototype held 160 g. After the team improved it, the new prototype held 220 g. How many more grams did it hold?
3. 3.🔢 To build and test a straw bridge, what comes right after “sketch three ideas”? (a) load it with coins (b) strengthen the weak part (c) choose and draw one (d) read the challenge rules
4. 4.🔍 Which is the odd one out? (a) hide a failed test (b) repeat each test (c) use a new load each time (d) guess, do not measure
5. 5.True or false: to repeat each test is poor testing. (a) False (b) True
6. 6.🔢 To build and test a straw bridge, which comes first: “load it with coins” or “sketch three ideas”? (a) sketch three ideas (b) load it with coins
7. 7.🔍 Which is the odd one out? (a) use a new load each time (b) guess, do not measure (c) hide a failed test (d) change only one thing
8. 8.🧪 Is it good or poor testing to skip writing results? (a) good testing (b) poor testing
9. 9.True or false: to measure the same way is poor testing. (a) True (b) False
10. 10.🧪 A paper bridge was tested three times. It held 230 g, 140 g and 170 g. What is the mean (average) load it held, in grams?
11. 11.🧪 The first prototype held 270 g. After the team improved it, the new prototype held 420 g. How many more grams did it hold?
12. 12.🧪 The first prototype held 200 g. After the team improved it, the new prototype held 220 g. How many more grams did it hold?
13. 13.🧪 Why do engineers make prototypes? (a) to avoid testing (b) to sell them at once (c) to decorate a room (d) to test ideas cheaply
14. 14.🔍 Which is the odd one out? (a) change lots at once (b) record every result (c) change only one thing (d) measure the same way
15. 15.🔢 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
16. 16.🧪 A paper bridge was tested three times. It held 370 g, 240 g and 320 g. What is the mean (average) load it held, in grams?
17. 17.🧪 The first prototype held 80 g. After the team improved it, the new prototype held 210 g. How many more grams did it hold?
18. 18.🔢 To build and test a straw bridge, which comes first: “strengthen the weak part” or “choose and draw one”? (a) strengthen the weak part (b) choose and draw one
19. 19.🔢 To build and test a straw bridge, what comes right after “load it with coins”? (a) choose and draw one (b) sketch three ideas (c) build it with straws (d) strengthen the weak part
20. 20.🧪 The first prototype held 110 g. After the team improved it, the new prototype held 160 g. How many more grams did it hold?
21. 21.True or false: to repeat each test is good testing. (a) False (b) True
22. 22.🔍 Which is the odd one out? (a) change lots at once (b) record every result (c) hide a failed test (d) guess, do not measure
23. 23.🧪 A paper bridge was tested three times. It held 280 g, 190 g and 280 g. What is the mean (average) load it held, in grams?
24. 24.🔢 To build and test a straw bridge, which is the FIRST step? (a) read the challenge rules (b) strengthen the weak part (c) load it with coins (d) build it with straws
25. 25.True or false: to guess, do not measure is good testing. (a) False (b) True
26. 26.🧪 Why repeat a test three times? (a) to get reliable results (b) the first is wrong (c) it looks busy (d) to use more paper
27. 27.🔍 Which is the odd one out? (a) use a new load each time (b) use the same load (c) change lots at once (d) hide a failed test
28. 28.🔍 Which is the odd one out? (a) test it only once (b) repeat each test (c) measure the same way (d) change only one thing
29. 29.🧪 A paper bridge was tested three times. It held 210 g, 120 g and 150 g. What is the mean (average) load it held, in grams?
30. 30.🧪 The first prototype held 130 g. After the team improved it, the new prototype held 150 g. How many more grams did it hold?
31. 31.🔍 Which is the odd one out? (a) guess, do not measure (b) use a new load each time (c) measure the same way (d) test it only once
32. 32.🧪 A paper bridge was tested three times. It held 160 g, 60 g and 260 g. What is the mean (average) load it held, in grams?
33. 33.🧪 Three prototype bridges were tested with the same method. Design A held 100 g, design B held 150 g and design C held 200 g. Which design was the strongest? (a) design A (b) design B (c) design C
34. 34.🧪 Three prototype bridges were tested with the same method. Design A held 340 g, design B held 390 g and design C held 290 g. Which design was the weakest? (a) design A (b) design B (c) design C
35. 35.🔍 Which is the odd one out? (a) skip writing results (b) use the same load (c) repeat each test (d) change only one thing
36. 36.🧪 In a fair test, how many things do you change at a time? (a) none (b) one (c) two (d) all of them
37. 37.🧪 What is a prototype? (a) an early test model (b) the final product (c) a sales poster (d) a broken part
38. 38.🔢 To build and test a straw bridge, what comes right after “build it with straws”? (a) sketch three ideas (b) load it with coins (c) strengthen the weak part (d) choose and draw one
39. 39.🧪 The first prototype held 130 g. After the team improved it, the new prototype held 300 g. How many more grams did it hold?
40. 40.🧪 Is it good or poor testing to measure the same way? (a) poor testing (b) good testing

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