Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 37 · 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 sell them at once (b) to decorate a room (c) to test ideas cheaply (d) to avoid testing
2. 2.🧪 A paper bridge was tested three times. It held 350 g, 300 g and 310 g. What is the mean (average) load it held, in grams?
3. 3.🧪 Is it good or poor testing to test it only once? (a) good testing (b) poor testing
4. 4.🧪 Three prototype bridges were tested with the same method. Design A held 200 g, design B held 150 g and design C held 100 g. Which design was the weakest? (a) design A (b) design C (c) design B
5. 5.True or false: to record every result is poor testing. (a) False (b) True
6. 6.True or false: to change only one thing is good testing. (a) True (b) False
7. 7.🧪 Is it good or poor testing to record every result? (a) poor testing (b) good testing
8. 8.🧪 A paper bridge was tested three times. It held 300 g, 200 g and 130 g. What is the mean (average) load it held, in grams?
9. 9.🧪 In a fair test, how many things do you change at a time? (a) two (b) none (c) one (d) all of them
10. 10.True or false: to hide a failed test is poor testing. (a) False (b) True
11. 11.🧪 Why repeat a test three times? (a) it looks busy (b) to use more paper (c) the first is wrong (d) to get reliable results
12. 12.🧪 What is a prototype? (a) a sales poster (b) the final product (c) a broken part (d) an early test model
13. 13.🧪 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 B (c) design A
14. 14.🔢 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) sketch three ideas
15. 15.🔍 Which is the odd one out? (a) change lots at once (b) change only one thing (c) test it only once (d) use a new load each time
16. 16.🧪 The first prototype held 100 g. After the team improved it, the new prototype held 280 g. How many more grams did it hold?
17. 17.🧪 Three prototype bridges were tested with the same method. Design A held 170 g, design B held 270 g and design C held 220 g. Which design was the weakest? (a) design B (b) design C (c) design A
18. 18.🔢 To build and test a straw bridge, what comes right after “read the challenge rules”? (a) build it with straws (b) choose and draw one (c) sketch three ideas (d) load it with coins
19. 19.🧪 Is it good or poor testing to measure the same way? (a) good testing (b) poor testing
20. 20.🧪 A paper bridge was tested three times. It held 330 g, 270 g and 360 g. What is the mean (average) load it held, in grams?
21. 21.🧪 The first prototype held 170 g. After the team improved it, the new prototype held 350 g. How many more grams did it hold?
22. 22.🧪 Three prototype bridges were tested with the same method. Design A held 340 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
23. 23.🧪 Three prototype bridges were tested with the same method. Design A held 210 g, design B held 260 g and design C held 160 g. Which design was the weakest? (a) design A (b) design B (c) design C
24. 24.🧪 Is it good or poor testing to guess, do not measure? (a) good testing (b) poor testing
25. 25.🔢 To build and test a straw bridge, which comes first: “build it with straws” or “read the challenge rules”? (a) build it with straws (b) read the challenge rules
26. 26.🧪 A paper bridge was tested three times. It held 280 g, 210 g and 140 g. What is the mean (average) load it held, in grams?
27. 27.🧪 A paper bridge was tested three times. It held 310 g, 230 g and 300 g. What is the mean (average) load it held, in grams?
28. 28.🔍 Which is the odd one out? (a) measure the same way (b) record every result (c) use a new load each time (d) change only one thing
29. 29.🧪 The first prototype held 190 g. After the team improved it, the new prototype held 360 g. How many more grams did it hold?
30. 30.True or false: to use the same load is poor testing. (a) False (b) True
31. 31.🔢 To build and test a straw bridge, what comes right after “build it with straws”? (a) strengthen the weak part (b) load it with coins (c) read the challenge rules (d) choose and draw one
32. 32.🧪 Is it good or poor testing to change only one thing? (a) good testing (b) poor testing
33. 33.🧪 A paper bridge was tested three times. It held 330 g, 280 g and 260 g. What is the mean (average) load it held, in grams?
34. 34.🔍 Which is the odd one out? (a) guess, do not measure (b) change lots at once (c) repeat each test (d) hide a failed test
35. 35.🔢 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
36. 36.🧪 Is it good or poor testing to use a new load each time? (a) poor testing (b) good testing
37. 37.🔍 Which is the odd one out? (a) repeat each test (b) measure the same way (c) skip writing results (d) record every result
38. 38.🧪 Is it good or poor testing to use the same load? (a) poor testing (b) good testing
39. 39.🧪 A paper bridge was tested three times. It held 260 g, 150 g and 190 g. What is the mean (average) load it held, in grams?
40. 40.True or false: to guess, do not measure is poor testing. (a) True (b) False

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