Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 741 · 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.🧪 A paper bridge was tested three times. It held 340 g, 180 g and 200 g. What is the mean (average) load it held, in grams?
2. 2.🧪 A paper bridge was tested three times. It held 300 g, 250 g and 350 g. What is the mean (average) load it held, in grams?
3. 3.🧪 What is a prototype? (a) a broken part (b) an early test model (c) a sales poster (d) the final product
4. 4.True or false: to guess, do not measure is poor testing. (a) False (b) True
5. 5.True or false: to use a new load each time is good testing. (a) False (b) True
6. 6.🔢 To build and test a straw bridge, what comes right after “build it with straws”? (a) sketch three ideas (b) strengthen the weak part (c) read the challenge rules (d) load it with coins
7. 7.🧪 The first prototype held 270 g. After the team improved it, the new prototype held 420 g. How many more grams did it hold?
8. 8.🧪 Is it good or poor testing to guess, do not measure? (a) poor testing (b) good testing
9. 9.🧪 Is it good or poor testing to measure the same way? (a) good testing (b) poor testing
10. 10.🔢 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
11. 11.🧪 Is it good or poor testing to use the same load? (a) poor testing (b) good testing
12. 12.🧪 The first prototype held 70 g. After the team improved it, the new prototype held 180 g. How many more grams did it hold?
13. 13.🔢 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
14. 14.🧪 Why repeat a test three times? (a) the first is wrong (b) it looks busy (c) to get reliable results (d) to use more paper
15. 15.🧪 In a fair test, how many things do you change at a time? (a) two (b) none (c) one (d) all of them
16. 16.🔢 To build and test a straw bridge, which is the LAST step? (a) load it with coins (b) sketch three ideas (c) strengthen the weak part (d) choose and draw one
17. 17.True or false: to change only one thing is good testing. (a) True (b) False
18. 18.🧪 The first prototype held 120 g. After the team improved it, the new prototype held 180 g. How many more grams did it hold?
19. 19.🧪 Is it good or poor testing to test it only once? (a) poor testing (b) good testing
20. 20.🔢 To build and test a straw bridge, which is the FIRST step? (a) build it with straws (b) read the challenge rules (c) load it with coins (d) strengthen the weak part
21. 21.True or false: to record every result is poor testing. (a) False (b) True
22. 22.🧪 Is it good or poor testing to skip writing results? (a) good testing (b) poor testing
23. 23.🧪 Three prototype bridges were tested with the same method. Design A held 330 g, design B held 230 g and design C held 280 g. Which design was the weakest? (a) design A (b) design C (c) design B
24. 24.True or false: to skip writing results is good testing. (a) True (b) False
25. 25.True or false: to guess, do not measure is good testing. (a) False (b) True
26. 26.🧪 Why do engineers make prototypes? (a) to decorate a room (b) to test ideas cheaply (c) to sell them at once (d) to avoid testing
27. 27.🧪 The first prototype held 50 g. After the team improved it, the new prototype held 250 g. How many more grams did it hold?
28. 28.🔍 Which is the odd one out? (a) repeat each test (b) record every result (c) measure the same way (d) change lots at once
29. 29.🧪 Three prototype bridges were tested with the same method. Design A held 320 g, design B held 370 g and design C held 270 g. Which design was the strongest? (a) design C (b) design A (c) design B
30. 30.🧪 The first prototype held 150 g. After the team improved it, the new prototype held 280 g. How many more grams did it hold?
31. 31.🔢 To build and test a straw bridge, which comes first: “choose and draw one” or “load it with coins”? (a) choose and draw one (b) load it with coins
32. 32.🔢 To build and test a straw bridge, what comes right after “read the challenge rules”? (a) strengthen the weak part (b) load it with coins (c) sketch three ideas (d) choose and draw one
33. 33.🧪 Three prototype bridges were tested with the same method. Design A held 290 g, design B held 340 g and design C held 390 g. Which design was the strongest? (a) design B (b) design A (c) design C
34. 34.True or false: to repeat each test is poor testing. (a) True (b) False
35. 35.🧪 Is it good or poor testing to change only one thing? (a) poor testing (b) good testing
36. 36.True or false: to change lots at once is good testing. (a) True (b) False
37. 37.🧪 The first prototype held 140 g. After the team improved it, the new prototype held 310 g. How many more grams did it hold?
38. 38.🧪 A paper bridge was tested three times. It held 200 g, 70 g and 240 g. What is the mean (average) load it held, in grams?
39. 39.🧪 A paper bridge was tested three times. It held 250 g, 150 g and 200 g. What is the mean (average) load it held, in grams?
40. 40.🔍 Which is the odd one out? (a) guess, do not measure (b) measure the same way (c) record every result (d) change only one thing

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