Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 577 · 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: “load it with coins” or “build it with straws”? (a) load it with coins (b) build it with straws
2. 2.🧪 A paper bridge was tested three times. It held 340 g, 240 g and 380 g. What is the mean (average) load it held, in grams?
3. 3.🧪 In a fair test, how many things do you change at a time? (a) none (b) one (c) two (d) all of them
4. 4.True or false: to hide a failed test is good testing. (a) True (b) False
5. 5.🧪 Is it good or poor testing to measure the same way? (a) good testing (b) poor testing
6. 6.🔢 To build and test a straw bridge, which is the FIRST step? (a) strengthen the weak part (b) choose and draw one (c) load it with coins (d) read the challenge rules
7. 7.🔍 Which is the odd one out? (a) change only one thing (b) skip writing results (c) record every result (d) measure the same way
8. 8.🧪 The first prototype held 200 g. After the team improved it, the new prototype held 240 g. How many more grams did it hold?
9. 9.True or false: to hide a failed test is poor testing. (a) False (b) True
10. 10.🧪 The first prototype held 120 g. After the team improved it, the new prototype held 170 g. How many more grams did it hold?
11. 11.🧪 Is it good or poor testing to hide a failed test? (a) good testing (b) poor testing
12. 12.🧪 A paper bridge was tested three times. It held 380 g, 250 g and 300 g. What is the mean (average) load it held, in grams?
13. 13.True or false: to measure the same way is poor testing. (a) False (b) True
14. 14.🧪 Why do engineers make prototypes? (a) to decorate a room (b) to sell them at once (c) to test ideas cheaply (d) to avoid testing
15. 15.🔍 Which is the odd one out? (a) record every result (b) change lots at once (c) skip writing results (d) test it only once
16. 16.🧪 Why repeat a test three times? (a) to get reliable results (b) it looks busy (c) the first is wrong (d) to use more paper
17. 17.🔍 Which is the odd one out? (a) measure the same way (b) hide a failed test (c) change only one thing (d) record every result
18. 18.🧪 A paper bridge was tested three times. It held 290 g, 220 g and 330 g. What is the mean (average) load it held, in grams?
19. 19.🔍 Which is the odd one out? (a) measure the same way (b) test it only once (c) repeat each test (d) use the same load
20. 20.🔍 Which is the odd one out? (a) use the same load (b) test it only once (c) guess, do not measure (d) skip writing results
21. 21.🧪 What is a prototype? (a) a sales poster (b) an early test model (c) the final product (d) a broken part
22. 22.🧪 A paper bridge was tested three times. It held 290 g, 200 g and 200 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 200 g, design B held 150 g and design C held 100 g. Which design was the strongest? (a) design C (b) design A (c) design B
24. 24.🔍 Which is the odd one out? (a) measure the same way (b) change only one thing (c) use a new load each time (d) repeat each test
25. 25.🔍 Which is the odd one out? (a) test it only once (b) skip writing results (c) repeat each test (d) hide a failed test
26. 26.🧪 Is it good or poor testing to change lots at once? (a) poor testing (b) good testing
27. 27.🔢 To build and test a straw bridge, what comes right after “read the challenge rules”? (a) choose and draw one (b) load it with coins (c) strengthen the weak part (d) sketch three ideas
28. 28.🧪 Three prototype bridges were tested with the same method. Design A held 160 g, design B held 210 g and design C held 260 g. Which design was the strongest? (a) design B (b) design C (c) design A
29. 29.True or false: to repeat each test is good testing. (a) False (b) True
30. 30.True or false: to measure the same way is good testing. (a) True (b) False
31. 31.🧪 Is it good or poor testing to test it only once? (a) good testing (b) poor testing
32. 32.🔢 To build and test a straw bridge, which is the LAST step? (a) strengthen the weak part (b) build it with straws (c) sketch three ideas (d) load it with coins
33. 33.True or false: to use a new load each time is poor testing. (a) True (b) False
34. 34.🧪 A paper bridge was tested three times. It held 350 g, 230 g and 170 g. What is the mean (average) load it held, in grams?
35. 35.True or false: to change only one thing is poor testing. (a) False (b) True
36. 36.🧪 Is it good or poor testing to repeat each test? (a) good testing (b) poor testing
37. 37.🧪 Is it good or poor testing to use the same load? (a) poor testing (b) good testing
38. 38.🧪 The first prototype held 200 g. After the team improved it, the new prototype held 360 g. How many more grams did it hold?
39. 39.🧪 A paper bridge was tested three times. It held 200 g, 160 g and 150 g. What is the mean (average) load it held, in grams?
40. 40.🔢 To build and test a straw bridge, what comes right after “build it with straws”? (a) strengthen the weak part (b) read the challenge rules (c) choose and draw one (d) load it with coins

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