Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 180 · 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.True or false: to measure the same way is good testing. (a) False (b) True
2. 2.🧪 The first prototype held 270 g. After the team improved it, the new prototype held 390 g. How many more grams did it hold?
3. 3.🧪 The first prototype held 150 g. After the team improved it, the new prototype held 200 g. How many more grams did it hold?
4. 4.🔢 To build and test a straw bridge, what comes right after “read the challenge rules”? (a) sketch three ideas (b) build it with straws (c) choose and draw one (d) strengthen the weak part
5. 5.🔍 Which is the odd one out? (a) guess, do not measure (b) skip writing results (c) change lots at once (d) measure the same way
6. 6.🔍 Which is the odd one out? (a) guess, do not measure (b) hide a failed test (c) skip writing results (d) change only one thing
7. 7.🔢 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
8. 8.🔍 Which is the odd one out? (a) hide a failed test (b) use the same load (c) record every result (d) change only one thing
9. 9.🧪 The first prototype held 250 g. After the team improved it, the new prototype held 290 g. How many more grams did it hold?
10. 10.True or false: to repeat each test is good testing. (a) True (b) False
11. 11.🔢 To build and test a straw bridge, which comes first: “sketch three ideas” or “build it with straws”? (a) sketch three ideas (b) build it with straws
12. 12.🔍 Which is the odd one out? (a) change lots at once (b) skip writing results (c) use the same load (d) guess, do not measure
13. 13.True or false: to use the same load is poor testing. (a) False (b) True
14. 14.🧪 The first prototype held 190 g. After the team improved it, the new prototype held 340 g. How many more grams did it hold?
15. 15.🧪 What is a prototype? (a) the final product (b) an early test model (c) a broken part (d) a sales poster
16. 16.🔢 To build and test a straw bridge, which comes first: “strengthen the weak part” or “load it with coins”? (a) strengthen the weak part (b) load it with coins
17. 17.🔢 To build and test a straw bridge, which is the FIRST step? (a) read the challenge rules (b) build it with straws (c) load it with coins (d) choose and draw one
18. 18.True or false: to test it only once is poor testing. (a) False (b) True
19. 19.🧪 A paper bridge was tested three times. It held 260 g, 200 g and 140 g. What is the mean (average) load it held, in grams?
20. 20.🧪 Why repeat a test three times? (a) the first is wrong (b) it looks busy (c) to use more paper (d) to get reliable results
21. 21.🧪 Why do engineers make prototypes? (a) to decorate a room (b) to avoid testing (c) to sell them at once (d) to test ideas cheaply
22. 22.🧪 A paper bridge was tested three times. It held 430 g, 320 g and 300 g. What is the mean (average) load it held, in grams?
23. 23.🧪 A paper bridge was tested three times. It held 320 g, 210 g and 190 g. What is the mean (average) load it held, in grams?
24. 24.🔢 To build and test a straw bridge, which comes first: “sketch three ideas” or “read the challenge rules”? (a) read the challenge rules (b) sketch three ideas
25. 25.🔍 Which is the odd one out? (a) record every result (b) change only one thing (c) test it only once (d) use the same load
26. 26.🧪 A paper bridge was tested three times. It held 270 g, 150 g and 240 g. What is the mean (average) load it held, in grams?
27. 27.🧪 Is it good or poor testing to repeat each test? (a) poor testing (b) good testing
28. 28.🔍 Which is the odd one out? (a) measure the same way (b) skip writing results (c) use the same load (d) change only one thing
29. 29.🧪 Three prototype bridges were tested with the same method. Design A held 160 g, design B held 210 g and design C held 110 g. Which design was the strongest? (a) design A (b) design B (c) design C
30. 30.🧪 In a fair test, how many things do you change at a time? (a) all of them (b) two (c) none (d) one
31. 31.True or false: to change only one thing is poor testing. (a) True (b) False
32. 32.🧪 A paper bridge was tested three times. It held 240 g, 160 g and 230 g. What is the mean (average) load it held, in grams?
33. 33.🔢 To build and test a straw bridge, which comes first: “build it with straws” or “strengthen the weak part”? (a) strengthen the weak part (b) build it with straws
34. 34.🧪 A paper bridge was tested three times. It held 340 g, 270 g and 350 g. What is the mean (average) load it held, in grams?
35. 35.🧪 Is it good or poor testing to skip writing results? (a) good testing (b) poor testing
36. 36.🧪 Is it good or poor testing to use the same load? (a) poor testing (b) good testing
37. 37.True or false: to guess, do not measure is good testing. (a) False (b) True
38. 38.🔢 To build and test a straw bridge, which comes first: “load it with coins” or “choose and draw one”? (a) load it with coins (b) choose and draw one
39. 39.🔢 To build and test a straw bridge, what comes right after “sketch three ideas”? (a) read the challenge rules (b) strengthen the weak part (c) choose and draw one (d) build it with straws
40. 40.🔍 Which is the odd one out? (a) use a new load each time (b) guess, do not measure (c) change lots at once (d) record every result

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