Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 141 · 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 hide a failed test is poor testing. (a) True (b) False
2. 2.🧪 Why do engineers make prototypes? (a) to sell them at once (b) to avoid testing (c) to test ideas cheaply (d) to decorate a room
3. 3.🧪 A paper bridge was tested three times. It held 240 g, 120 g and 270 g. What is the mean (average) load it held, in grams?
4. 4.True or false: to record every result is good testing. (a) False (b) True
5. 5.🔢 To build and test a straw bridge, which is the FIRST step? (a) choose and draw one (b) read the challenge rules (c) strengthen the weak part (d) load it with coins
6. 6.True or false: to use a new load each time is good testing. (a) True (b) False
7. 7.🔍 Which is the odd one out? (a) guess, do not measure (b) change only one thing (c) use a new load each time (d) test it only once
8. 8.🧪 What is a prototype? (a) a sales poster (b) a broken part (c) an early test model (d) the final product
9. 9.🔢 To build and test a straw bridge, what comes right after “sketch three ideas”? (a) read the challenge rules (b) choose and draw one (c) build it with straws (d) strengthen the weak part
10. 10.🔢 To build and test a straw bridge, what comes right after “read the challenge rules”? (a) load it with coins (b) sketch three ideas (c) build it with straws (d) choose and draw one
11. 11.True or false: to skip writing results is good testing. (a) True (b) False
12. 12.🧪 Three prototype bridges were tested with the same method. Design A held 280 g, design B held 230 g and design C held 330 g. Which design was the strongest? (a) design A (b) design B (c) design C
13. 13.🧪 Three prototype bridges were tested with the same method. Design A held 360 g, design B held 260 g and design C held 310 g. Which design was the weakest? (a) design C (b) design A (c) design B
14. 14.🧪 Is it good or poor testing to repeat each test? (a) poor testing (b) good testing
15. 15.True or false: to measure the same way is good testing. (a) False (b) True
16. 16.🧪 Is it good or poor testing to change lots at once? (a) good testing (b) poor testing
17. 17.True or false: to record every result is poor testing. (a) False (b) True
18. 18.True or false: to hide a failed test is good testing. (a) False (b) True
19. 19.🧪 Three prototype bridges were tested with the same method. Design A held 360 g, design B held 310 g and design C held 260 g. Which design was the weakest? (a) design A (b) design C (c) design B
20. 20.🧪 Why repeat a test three times? (a) to get reliable results (b) it looks busy (c) the first is wrong (d) to use more paper
21. 21.🧪 Is it good or poor testing to measure the same way? (a) poor testing (b) good testing
22. 22.🧪 A paper bridge was tested three times. It held 300 g, 220 g and 170 g. What is the mean (average) load it held, in grams?
23. 23.🧪 A paper bridge was tested three times. It held 330 g, 250 g and 290 g. What is the mean (average) load it held, in grams?
24. 24.🧪 Three prototype bridges were tested with the same method. Design A held 200 g, design B held 150 g and design C held 250 g. Which design was the weakest? (a) design A (b) design B (c) design C
25. 25.🧪 A paper bridge was tested three times. It held 310 g, 230 g and 360 g. What is the mean (average) load it held, in grams?
26. 26.🔍 Which is the odd one out? (a) measure the same way (b) record every result (c) change only one thing (d) change lots at once
27. 27.🧪 The first prototype held 290 g. After the team improved it, the new prototype held 410 g. How many more grams did it hold?
28. 28.🔢 To build and test a straw bridge, which comes first: “build it with straws” or “load it with coins”? (a) load it with coins (b) build it with straws
29. 29.🧪 Three prototype bridges were tested with the same method. Design A held 400 g, design B held 300 g and design C held 350 g. Which design was the weakest? (a) design B (b) design C (c) design A
30. 30.🧪 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 strongest? (a) design C (b) design B (c) design A
31. 31.🧪 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 weakest? (a) design B (b) design A (c) design C
32. 32.🔢 To build and test a straw bridge, what comes right after “load it with coins”? (a) sketch three ideas (b) strengthen the weak part (c) build it with straws (d) read the challenge rules
33. 33.🔍 Which is the odd one out? (a) test it only once (b) measure the same way (c) guess, do not measure (d) use a new load each time
34. 34.True or false: to change lots at once is poor testing. (a) True (b) False
35. 35.🧪 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 C (b) design B (c) design A
36. 36.🧪 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 weakest? (a) design A (b) design B (c) design C
37. 37.🧪 The first prototype held 50 g. After the team improved it, the new prototype held 80 g. How many more grams did it hold?
38. 38.🧪 Is it good or poor testing to change only one thing? (a) poor testing (b) good testing
39. 39.🔢 To build and test a straw bridge, which comes first: “sketch three ideas” or “build it with straws”? (a) sketch three ideas (b) build it with straws
40. 40.True or false: to guess, do not measure is poor testing. (a) False (b) True

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