Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 5 · 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.🧪 Why do engineers make prototypes? (a) to decorate a room (b) to test ideas cheaply (c) to avoid testing (d) to sell them at once
2. 2.🔢 To build and test a straw bridge, which is the FIRST step? (a) strengthen the weak part (b) read the challenge rules (c) load it with coins (d) build it with straws
3. 3.🧪 In a fair test, how many things do you change at a time? (a) one (b) none (c) all of them (d) two
4. 4.🧪 What is a prototype? (a) a sales poster (b) an early test model (c) the final product (d) a broken part
5. 5.🧪 Three prototype bridges were tested with the same method. Design A held 190 g, design B held 290 g and design C held 240 g. Which design was the strongest? (a) design A (b) design B (c) design C
6. 6.🧪 Is it good or poor testing to use the same load? (a) poor testing (b) good testing
7. 7.🧪 A paper bridge was tested three times. It held 180 g, 80 g and 250 g. What is the mean (average) load it held, in grams?
8. 8.🧪 Three prototype bridges were tested with the same method. Design A held 340 g, design B held 240 g and design C held 290 g. Which design was the strongest? (a) design A (b) design C (c) design B
9. 9.🔢 To build and test a straw bridge, which comes first: “read the challenge rules” or “choose and draw one”? (a) read the challenge rules (b) choose and draw one
10. 10.True or false: to use a new load each time is good testing. (a) True (b) False
11. 11.🧪 Three prototype bridges were tested with the same method. Design A held 340 g, design B held 290 g and design C held 390 g. Which design was the strongest? (a) design A (b) design C (c) design B
12. 12.🧪 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 strongest? (a) design B (b) design C (c) design A
13. 13.🧪 The first prototype held 290 g. After the team improved it, the new prototype held 340 g. How many more grams did it hold?
14. 14.🧪 A paper bridge was tested three times. It held 270 g, 200 g and 130 g. What is the mean (average) load it held, in grams?
15. 15.🔍 Which is the odd one out? (a) repeat each test (b) measure the same way (c) change only one thing (d) hide a failed test
16. 16.🧪 A paper bridge was tested three times. It held 360 g, 290 g and 310 g. What is the mean (average) load it held, in grams?
17. 17.🔢 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
18. 18.True or false: to test it only once is good testing. (a) False (b) True
19. 19.🧪 A paper bridge was tested three times. It held 300 g, 130 g and 170 g. What is the mean (average) load it held, in grams?
20. 20.🧪 Three prototype bridges were tested with the same method. Design A held 140 g, design B held 240 g and design C held 190 g. Which design was the strongest? (a) design A (b) design B (c) design C
21. 21.True or false: to record every result is poor testing. (a) False (b) True
22. 22.🔍 Which is the odd one out? (a) record every result (b) guess, do not measure (c) skip writing results (d) test it only once
23. 23.🧪 Is it good or poor testing to guess, do not measure? (a) good testing (b) poor testing
24. 24.🧪 The first prototype held 170 g. After the team improved it, the new prototype held 180 g. How many more grams did it hold?
25. 25.True or false: to change lots at once is good testing. (a) False (b) True
26. 26.True or false: to record every result is good testing. (a) True (b) False
27. 27.True or false: to repeat each test is poor testing. (a) False (b) True
28. 28.🔍 Which is the odd one out? (a) guess, do not measure (b) test it only once (c) use the same load (d) skip writing results
29. 29.🧪 Three prototype bridges were tested with the same method. Design A held 220 g, design B held 270 g and design C held 320 g. Which design was the strongest? (a) design B (b) design C (c) design A
30. 30.🔢 To build and test a straw bridge, which comes first: “read the challenge rules” or “strengthen the weak part”? (a) read the challenge rules (b) strengthen the weak part
31. 31.🔢 To build and test a straw bridge, what comes right after “build it with straws”? (a) choose and draw one (b) sketch three ideas (c) load it with coins (d) strengthen the weak part
32. 32.🧪 The first prototype held 240 g. After the team improved it, the new prototype held 270 g. How many more grams did it hold?
33. 33.🔢 To build and test a straw bridge, which comes first: “load it with coins” or “read the challenge rules”? (a) read the challenge rules (b) load it with coins
34. 34.🔍 Which is the odd one out? (a) change only one thing (b) skip writing results (c) use the same load (d) measure the same way
35. 35.🔍 Which is the odd one out? (a) change lots at once (b) change only one thing (c) hide a failed test (d) test it only once
36. 36.🧪 A paper bridge was tested three times. It held 280 g, 140 g and 150 g. What is the mean (average) load it held, in grams?
37. 37.🧪 The first prototype held 80 g. After the team improved it, the new prototype held 280 g. How many more grams did it hold?
38. 38.🧪 Is it good or poor testing to measure the same way? (a) good testing (b) poor testing
39. 39.🧪 Is it good or poor testing to skip writing results? (a) good testing (b) poor testing
40. 40.🧪 The first prototype held 250 g. After the team improved it, the new prototype held 440 g. How many more grams did it hold?

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