Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 388 · 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: “sketch three ideas” or “build it with straws”? (a) build it with straws (b) sketch three ideas
2. 2.🧪 Three prototype bridges were tested with the same method. Design A held 150 g, design B held 250 g and design C held 200 g. Which design was the weakest? (a) design A (b) design C (c) design B
3. 3.🧪 The first prototype held 170 g. After the team improved it, the new prototype held 260 g. How many more grams did it hold?
4. 4.🔍 Which is the odd one out? (a) skip writing results (b) use a new load each time (c) hide a failed test (d) record every result
5. 5.🧪 Is it good or poor testing to change only one thing? (a) good testing (b) poor testing
6. 6.🔢 To build and test a straw bridge, which comes first: “strengthen the weak part” or “read the challenge rules”? (a) strengthen the weak part (b) read the challenge rules
7. 7.🧪 The first prototype held 290 g. After the team improved it, the new prototype held 350 g. How many more grams did it hold?
8. 8.🧪 Why repeat a test three times? (a) it looks busy (b) the first is wrong (c) to use more paper (d) to get reliable results
9. 9.🧪 What is a prototype? (a) an early test model (b) a broken part (c) a sales poster (d) the final product
10. 10.🔢 To build and test a straw bridge, which comes first: “sketch three ideas” or “read the challenge rules”? (a) sketch three ideas (b) read the challenge rules
11. 11.🧪 Three prototype bridges were tested with the same method. Design A held 280 g, design B held 230 g and design C held 180 g. Which design was the strongest? (a) design C (b) design A (c) design B
12. 12.🔢 To build and test a straw bridge, which is the FIRST step? (a) choose and draw one (b) load it with coins (c) read the challenge rules (d) build it with straws
13. 13.🧪 In a fair test, how many things do you change at a time? (a) one (b) none (c) all of them (d) two
14. 14.True or false: to record every result is good testing. (a) True (b) False
15. 15.🧪 A paper bridge was tested three times. It held 300 g, 160 g and 260 g. What is the mean (average) load it held, in grams?
16. 16.True or false: to change lots at once is good testing. (a) True (b) False
17. 17.🔍 Which is the odd one out? (a) measure the same way (b) record every result (c) change only one thing (d) test it only once
18. 18.🔢 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) build it with straws (d) choose and draw one
19. 19.🧪 Why do engineers make prototypes? (a) to test ideas cheaply (b) to avoid testing (c) to decorate a room (d) to sell them at once
20. 20.🔍 Which is the odd one out? (a) test it only once (b) skip writing results (c) repeat each test (d) change lots at once
21. 21.🔢 To build and test a straw bridge, what comes right after “build it with straws”? (a) choose and draw one (b) read the challenge rules (c) load it with coins (d) sketch three ideas
22. 22.True or false: to use the same load is good testing. (a) False (b) True
23. 23.True or false: to change only one thing is good testing. (a) False (b) True
24. 24.True or false: to change only one thing is poor testing. (a) False (b) True
25. 25.🔢 To build and test a straw bridge, which comes first: “read the challenge rules” or “strengthen the weak part”? (a) strengthen the weak part (b) read the challenge rules
26. 26.🧪 The first prototype held 100 g. After the team improved it, the new prototype held 110 g. How many more grams did it hold?
27. 27.True or false: to record every result is poor testing. (a) False (b) True
28. 28.🧪 Three prototype bridges were tested with the same method. Design A held 320 g, design B held 270 g and design C held 370 g. Which design was the weakest? (a) design A (b) design C (c) design B
29. 29.🧪 Is it good or poor testing to measure the same way? (a) poor testing (b) good testing
30. 30.🔍 Which is the odd one out? (a) change lots at once (b) test it only once (c) guess, do not measure (d) use the same load
31. 31.🔍 Which is the odd one out? (a) repeat each test (b) change only one thing (c) use a new load each time (d) measure the same way
32. 32.True or false: to hide a failed test is good testing. (a) True (b) False
33. 33.🧪 Is it good or poor testing to test it only once? (a) good testing (b) poor testing
34. 34.True or false: to repeat each test is poor testing. (a) True (b) False
35. 35.🔢 To build and test a straw bridge, which is the LAST step? (a) load it with coins (b) read the challenge rules (c) strengthen the weak part (d) choose and draw one
36. 36.🧪 A paper bridge was tested three times. It held 320 g, 270 g and 340 g. What is the mean (average) load it held, in grams?
37. 37.🧪 The first prototype held 200 g. After the team improved it, the new prototype held 260 g. How many more grams did it hold?
38. 38.True or false: to change lots at once is poor testing. (a) True (b) False
39. 39.🧪 The first prototype held 80 g. After the team improved it, the new prototype held 250 g. How many more grams did it hold?
40. 40.🔢 To build and test a straw bridge, what comes right after “read the challenge rules”? (a) choose and draw one (b) build it with straws (c) sketch three ideas (d) load it with coins

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