Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 905 · 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) True (b) False
2. 2.🧪 What is a prototype? (a) a sales poster (b) an early test model (c) the final product (d) a broken part
3. 3.🔢 To build and test a straw bridge, what comes right after “build it with straws”? (a) choose and draw one (b) strengthen the weak part (c) sketch three ideas (d) load it with coins
4. 4.🔢 To build and test a straw bridge, which comes first: “build it with straws” or “strengthen the weak part”? (a) build it with straws (b) strengthen the weak part
5. 5.🧪 Three prototype bridges were tested with the same method. Design A held 130 g, design B held 230 g and design C held 180 g. Which design was the weakest? (a) design B (b) design C (c) design A
6. 6.🧪 Why do engineers make prototypes? (a) to sell them at once (b) to test ideas cheaply (c) to avoid testing (d) to decorate a room
7. 7.🧪 Is it good or poor testing to repeat each test? (a) good testing (b) poor testing
8. 8.True or false: to record every result is good testing. (a) False (b) True
9. 9.🔍 Which is the odd one out? (a) record every result (b) repeat each test (c) measure the same way (d) test it only once
10. 10.🧪 A paper bridge was tested three times. It held 200 g, 160 g and 120 g. What is the mean (average) load it held, in grams?
11. 11.🧪 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
12. 12.🔢 To build and test a straw bridge, which comes first: “build it with straws” or “load it with coins”? (a) build it with straws (b) load it with coins
13. 13.🔍 Which is the odd one out? (a) record every result (b) change lots at once (c) skip writing results (d) test it only once
14. 14.🧪 The first prototype held 290 g. After the team improved it, the new prototype held 380 g. How many more grams did it hold?
15. 15.🧪 The first prototype held 100 g. After the team improved it, the new prototype held 280 g. How many more grams did it hold?
16. 16.🧪 The first prototype held 120 g. After the team improved it, the new prototype held 140 g. How many more grams did it hold?
17. 17.🔍 Which is the odd one out? (a) change only one thing (b) record every result (c) guess, do not measure (d) repeat each test
18. 18.🧪 In a fair test, how many things do you change at a time? (a) all of them (b) two (c) one (d) none
19. 19.True or false: to change only one thing is poor testing. (a) False (b) True
20. 20.True or false: to measure the same way is poor testing. (a) False (b) True
21. 21.🔍 Which is the odd one out? (a) use a new load each time (b) repeat each test (c) change lots at once (d) skip writing results
22. 22.🔢 To build and test a straw bridge, which comes first: “choose and draw one” or “build it with straws”? (a) choose and draw one (b) build it with straws
23. 23.🧪 Three prototype bridges were tested with the same method. Design A held 310 g, design B held 260 g and design C held 210 g. Which design was the weakest? (a) design A (b) design B (c) design C
24. 24.🔢 To build and test a straw bridge, what comes right after “read the challenge rules”? (a) build it with straws (b) load it with coins (c) strengthen the weak part (d) sketch three ideas
25. 25.🔍 Which is the odd one out? (a) use the same load (b) measure the same way (c) repeat each test (d) use a new load each time
26. 26.True or false: to hide a failed test is good testing. (a) False (b) True
27. 27.🧪 A paper bridge was tested three times. It held 290 g, 180 g and 340 g. What is the mean (average) load it held, in grams?
28. 28.🔍 Which is the odd one out? (a) record every result (b) measure the same way (c) hide a failed test (d) change only one thing
29. 29.🔢 To build and test a straw bridge, what comes right after “load it with coins”? (a) read the challenge rules (b) strengthen the weak part (c) build it with straws (d) sketch three ideas
30. 30.🧪 Three prototype bridges were tested with the same method. Design A held 170 g, design B held 220 g and design C held 270 g. Which design was the weakest? (a) design B (b) design A (c) design C
31. 31.True or false: to record every result is poor testing. (a) False (b) True
32. 32.🧪 Is it good or poor testing to skip writing results? (a) poor testing (b) good testing
33. 33.🔢 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
34. 34.🧪 The first prototype held 90 g. After the team improved it, the new prototype held 140 g. How many more grams did it hold?
35. 35.True or false: to use a new load each time is good testing. (a) True (b) False
36. 36.🧪 Is it good or poor testing to hide a failed test? (a) good testing (b) poor testing
37. 37.🧪 The first prototype held 110 g. After the team improved it, the new prototype held 230 g. How many more grams did it hold?
38. 38.🧪 Is it good or poor testing to change only one thing? (a) good testing (b) poor testing
39. 39.🧪 Is it good or poor testing to use a new load each time? (a) poor testing (b) good testing
40. 40.🧪 The first prototype held 110 g. After the team improved it, the new prototype held 290 g. How many more grams did it hold?

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