Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 363 · 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.🧪 What is a prototype? (a) an early test model (b) a broken part (c) the final product (d) a sales poster
2. 2.🧪 The first prototype held 210 g. After the team improved it, the new prototype held 400 g. How many more grams did it hold?
3. 3.True or false: to use a new load each time is poor testing. (a) False (b) True
4. 4.🧪 The first prototype held 300 g. After the team improved it, the new prototype held 400 g. How many more grams did it hold?
5. 5.True or false: to hide a failed test is good testing. (a) True (b) False
6. 6.🧪 Is it good or poor testing to repeat each test? (a) poor testing (b) good testing
7. 7.🧪 A paper bridge was tested three times. It held 190 g, 90 g and 230 g. What is the mean (average) load it held, in grams?
8. 8.🧪 The first prototype held 190 g. After the team improved it, the new prototype held 240 g. How many more grams did it hold?
9. 9.🧪 A paper bridge was tested three times. It held 340 g, 250 g and 190 g. What is the mean (average) load it held, in grams?
10. 10.🧪 Why do engineers make prototypes? (a) to avoid testing (b) to test ideas cheaply (c) to decorate a room (d) to sell them at once
11. 11.🧪 The first prototype held 130 g. After the team improved it, the new prototype held 270 g. How many more grams did it hold?
12. 12.🧪 Is it good or poor testing to guess, do not measure? (a) good testing (b) poor testing
13. 13.🧪 The first prototype held 110 g. After the team improved it, the new prototype held 120 g. How many more grams did it hold?
14. 14.🔍 Which is the odd one out? (a) repeat each test (b) measure the same way (c) guess, do not measure (d) change only one thing
15. 15.True or false: to record every result is good testing. (a) True (b) False
16. 16.🧪 The first prototype held 260 g. After the team improved it, the new prototype held 440 g. How many more grams did it hold?
17. 17.🧪 A paper bridge was tested three times. It held 190 g, 50 g and 210 g. What is the mean (average) load it held, in grams?
18. 18.True or false: to hide a failed test is poor testing. (a) False (b) True
19. 19.🧪 In a fair test, how many things do you change at a time? (a) all of them (b) two (c) none (d) one
20. 20.🧪 Is it good or poor testing to record every result? (a) good testing (b) poor testing
21. 21.True or false: to test it only once is good testing. (a) True (b) False
22. 22.🔢 To build and test a straw bridge, what comes right after “choose and draw one”? (a) sketch three ideas (b) build it with straws (c) read the challenge rules (d) load it with coins
23. 23.🔍 Which is the odd one out? (a) repeat each test (b) skip writing results (c) change only one thing (d) record every result
24. 24.🧪 A paper bridge was tested three times. It held 220 g, 160 g and 220 g. What is the mean (average) load it held, in grams?
25. 25.🔢 To build and test a straw bridge, what comes right after “build it with straws”? (a) strengthen the weak part (b) sketch three ideas (c) choose and draw one (d) load it with coins
26. 26.🔢 To build and test a straw bridge, which is the FIRST step? (a) build it with straws (b) strengthen the weak part (c) read the challenge rules (d) sketch three ideas
27. 27.True or false: to change only one thing is good testing. (a) False (b) True
28. 28.True or false: to measure the same way is poor testing. (a) False (b) True
29. 29.🧪 Three prototype bridges were tested with the same method. Design A held 200 g, design B held 250 g and design C held 150 g. Which design was the weakest? (a) design A (b) design C (c) design B
30. 30.🧪 Is it good or poor testing to hide a failed test? (a) good testing (b) poor testing
31. 31.🔍 Which is the odd one out? (a) repeat each test (b) use a new load each time (c) use the same load (d) change only one thing
32. 32.🔍 Which is the odd one out? (a) use a new load each time (b) repeat each test (c) change lots at once (d) hide a failed test
33. 33.🔢 To build and test a straw bridge, which is the LAST step? (a) choose and draw one (b) strengthen the weak part (c) build it with straws (d) read the challenge rules
34. 34.🧪 Three prototype bridges were tested with the same method. Design A held 350 g, design B held 300 g and design C held 250 g. Which design was the weakest? (a) design B (b) design C (c) design A
35. 35.🔢 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
36. 36.🧪 Is it good or poor testing to skip writing results? (a) poor testing (b) good testing
37. 37.🧪 Three prototype bridges were tested with the same method. Design A held 240 g, design B held 340 g and design C held 290 g. Which design was the strongest? (a) design C (b) design A (c) design B
38. 38.🧪 The first prototype held 60 g. After the team improved it, the new prototype held 260 g. How many more grams did it hold?
39. 39.🧪 The first prototype held 120 g. After the team improved it, the new prototype held 200 g. How many more grams did it hold?
40. 40.🧪 The first prototype held 260 g. After the team improved it, the new prototype held 300 g. How many more grams did it hold?

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