Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 793 · 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.True or false: to use the same load is poor testing. (a) False (b) True
2. 2.🧪 Three prototype bridges were tested with the same method. Design A held 270 g, design B held 170 g and design C held 220 g. Which design was the strongest? (a) design A (b) design B (c) design C
3. 3.🔍 Which is the odd one out? (a) use a new load each time (b) change lots at once (c) measure the same way (d) guess, do not measure
4. 4.🧪 Three prototype bridges were tested with the same method. Design A held 290 g, design B held 340 g and design C held 240 g. Which design was the weakest? (a) design C (b) design A (c) design B
5. 5.🔢 To build and test a straw bridge, what comes right after “sketch three ideas”? (a) choose and draw one (b) build it with straws (c) load it with coins (d) read the challenge rules
6. 6.🔢 To build and test a straw bridge, which comes first: “choose and draw one” or “strengthen the weak part”? (a) choose and draw one (b) strengthen the weak part
7. 7.True or false: to change only one thing is poor testing. (a) True (b) False
8. 8.True or false: to test it only once is good testing. (a) True (b) False
9. 9.🧪 Is it good or poor testing to use the same load? (a) good testing (b) poor testing
10. 10.🧪 What is a prototype? (a) the final product (b) a sales poster (c) an early test model (d) a broken part
11. 11.🧪 In a fair test, how many things do you change at a time? (a) one (b) none (c) all of them (d) two
12. 12.🧪 Three prototype bridges were tested with the same method. Design A held 160 g, design B held 110 g and design C held 210 g. Which design was the strongest? (a) design A (b) design B (c) design C
13. 13.🧪 A paper bridge was tested three times. It held 320 g, 160 g and 240 g. What is the mean (average) load it held, in grams?
14. 14.🧪 A paper bridge was tested three times. It held 230 g, 50 g and 170 g. What is the mean (average) load it held, in grams?
15. 15.🔢 To build and test a straw bridge, what comes right after “build it with straws”? (a) read the challenge rules (b) choose and draw one (c) sketch three ideas (d) load it with coins
16. 16.🧪 A paper bridge was tested three times. It held 370 g, 250 g and 220 g. What is the mean (average) load it held, in grams?
17. 17.🧪 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
18. 18.🧪 Is it good or poor testing to hide a failed test? (a) poor testing (b) good testing
19. 19.🧪 Is it good or poor testing to test it only once? (a) good testing (b) poor testing
20. 20.🧪 The first prototype held 250 g. After the team improved it, the new prototype held 280 g. How many more grams did it hold?
21. 21.🧪 Three prototype bridges were tested with the same method. Design A held 270 g, design B held 320 g and design C held 220 g. Which design was the weakest? (a) design A (b) design C (c) design B
22. 22.🧪 Three prototype bridges were tested with the same method. Design A held 280 g, design B held 380 g and design C held 330 g. Which design was the weakest? (a) design B (b) design C (c) design A
23. 23.🔢 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
24. 24.🔢 To build and test a straw bridge, which is the FIRST step? (a) sketch three ideas (b) read the challenge rules (c) load it with coins (d) strengthen the weak part
25. 25.🧪 A paper bridge was tested three times. It held 290 g, 270 g and 280 g. What is the mean (average) load it held, in grams?
26. 26.🧪 A paper bridge was tested three times. It held 310 g, 130 g and 190 g. What is the mean (average) load it held, in grams?
27. 27.🧪 Why repeat a test three times? (a) to use more paper (b) the first is wrong (c) to get reliable results (d) it looks busy
28. 28.🧪 Three prototype bridges were tested with the same method. Design A held 230 g, design B held 280 g and design C held 330 g. Which design was the strongest? (a) design A (b) design C (c) design B
29. 29.🔍 Which is the odd one out? (a) test it only once (b) change lots at once (c) repeat each test (d) hide a failed test
30. 30.🧪 A paper bridge was tested three times. It held 310 g, 240 g and 170 g. What is the mean (average) load it held, in grams?
31. 31.🔍 Which is the odd one out? (a) repeat each test (b) use the same load (c) measure the same way (d) use a new load each time
32. 32.True or false: to repeat each test is poor testing. (a) True (b) False
33. 33.🔍 Which is the odd one out? (a) measure the same way (b) test it only once (c) record every result (d) use the same load
34. 34.🧪 A paper bridge was tested three times. It held 220 g, 180 g and 170 g. What is the mean (average) load it held, in grams?
35. 35.🧪 A paper bridge was tested three times. It held 390 g, 250 g and 230 g. What is the mean (average) load it held, in grams?
36. 36.🧪 Three prototype bridges were tested with the same method. Design A held 110 g, design B held 210 g and design C held 160 g. Which design was the weakest? (a) design A (b) design C (c) design B
37. 37.🧪 Is it good or poor testing to skip writing results? (a) good testing (b) poor testing
38. 38.🔍 Which is the odd one out? (a) record every result (b) guess, do not measure (c) use the same load (d) change only one thing
39. 39.🔍 Which is the odd one out? (a) change lots at once (b) change only one thing (c) repeat each test (d) use the same load
40. 40.🧪 The first prototype held 160 g. After the team improved it, the new prototype held 200 g. How many more grams did it hold?

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